M. MAZA Mekki

Prof

Directory of teachers

Department

CIVIL ENGINEERING

Research Interests

Génie civil "Matériaux "

Contact Info

University of M'Sila, Algeria

Email : mekki.maza@univ-msila.dz

On the Web:

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Recent Publications

2025-06-20

Valorization of Sewage Sludge Ash from Wastewater Treatment in Sustainable Concrete and Mortar: A Review

The disposal of sewage sludge from wastewater treatment plants presents significant environmental and economic challenges. Thermal treatment of sewage sludge results in sewage sludge ash (SSA), a by-product with pozzolanic and cementitious properties, offering a potential solution for sustainable construction materials. This review explores the valorization of SSA as a partial replacement for cement and aggregates in concrete and mortar production, aiming to enhance sustainability while reducing the environmental footprint of the construction industry. A critical analysis of SSA’s chemical composition, mineralogical phases, and physical characteristics highlights its compatibility with cementitious materials. Studies indicate that incorporating SSA can improve specific mechanical and durability properties, such as sulfate resistance, water absorption, and long-term strength. However, challenges related to SSA variability, heavy metal content, and its impact on fresh and hardened properties require
further investigation. This review discusses existing research on SSA’s integration into concrete and mortar, outlines the limitations of current applications, and identifies future research needs. The findings support SSA as a viable alternative material in construction, promoting circular economy principles and sustainable waste management.
Citation

M. MAZA Mekki, (2025-06-20), "Valorization of Sewage Sludge Ash from Wastewater Treatment in Sustainable Concrete and Mortar: A Review", [international] 2nd International Conference on Engineering, Natural Sciences, and Technological Developments (ICENSTED 2025) , Bayburt, Türkİye

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2025-04-15

Use of sewage sludge in Concrete pavers

The sewage sludge is the residue resulting from the treatment of wastewater in treatment plants. Composed mainly of organic matter, microorganisms, and minerals, they are formed during the processes of sedimentation and biological treatment of effluents. After treatment, the sludge can be stabilized, dehydrated, or incinerated to reduce its volume and environmental impact. They find various applications in the construction sector as a partial substitute for certain materials.
Concrete pavers are prefabricated elements widely used in urban and landscape development due to their robustness, durability, and versatile aesthetics. Made from a mixture of cement, aggregates, water, and sometimes additives, they offer high resistance to compression and extreme weather conditions, such as freezing and thawing. Available in various shapes, sizes, colors, and finishes, concrete pavers allow for the creation of diverse patterns, ranging from simple designs to complex configurations.
The valorization of wastewater treatment sludge in concrete pavers constitutes an innovative and sustainable solution to reduce the environmental impact of waste from treatment plants. After treatment, the sludge can be transformed into ash through incineration to be integrated into concrete as a partial substitute for cement or aggregates. This approach offers a double opportunity: to reduce the volumes of sludge destined for landfilling and to lower the carbon footprint of paving stone production, particularly by replacing part of the cement, whose manufacturing is energy-intensive. The pavers produced with CBE exhibit satisfactory mechanical and durable properties for non-structural applications, such as sidewalks or landscaping.
Citation

M. MAZA Mekki, (2025-04-15), "Use of sewage sludge in Concrete pavers", [international] 5th International Conference on Engineering, Natural and Social Sciences , Konya, Turkey

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2025-01-15

Next-Generation Construction: Leveraging Nanomaterials for Enhanced Performance and Sustainability in Civil Engineering

Nanomaterials are transforming the field of civil engineering by significantly enhancing the performance and durability of construction materials and infrastructure. This research explores the innovative applications of nanotechnology in civil engineering, focusing on how nanomaterials improve the properties of traditional materials like concrete, steel, and asphalt. The study examines the impact of nanoparticles, such as carbon nanotubes, nano-silica, and nano-titanium dioxide, in increasing the mechanical strength, durability, and self-healing capabilities of these materials.
Moreover, the research delves into the environmental benefits of using nanomaterials, including their potential to reduce the carbon footprint of construction processes and extend the lifespan of infrastructure. The incorporation of nanomaterials also offers new functionalities, such as enhanced resistance to corrosion, improved thermal insulation, and the ability to monitor structural health in real-time through embedded sensors.
While the advantages of nanomaterials in civil engineering are significant, the study also addresses the challenges, including the high cost of production, potential environmental risks, and the need for standardized testing methods. As the field continues to evolve, this research aims to provide a comprehensive overview of the current state of nanomaterials in civil engineering, highlighting their potential to revolutionize the construction industry and contribute to more sustainable and resilient infrastructure.
Citation

M. MAZA Mekki, (2025-01-15), "Next-Generation Construction: Leveraging Nanomaterials for Enhanced Performance and Sustainability in Civil Engineering", [international] 2nd International Conference on Modern and Advanced Research , Konya, Turkey

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2024-12-24

Valorization of glass waste in brick manufacturing

Abstract :
The integration of glass waste into the production of fired clay bricks is an innovative and sustainable approach to waste management. This method not only reduces the environmental impact associated with glass waste disposal but also enhances the efficiency and sustainability of clay brick manufacturing processes.
Traditionally, brick making relies on materials such as clay. By integrating glass waste recovered from processing and recycling industries into the brick manufacturing process, it is possible to reduce dependence on natural resources while minimizing waste.
Glass waste can be processed into fine powder and incorporated into the composition of raw material mixtures used for brick manufacturing.
The percentage of glass waste that can be added in the manufacture of bricks may vary depending on several factors, including the specific characteristics of the materials used, the quality requirements of the final bricks, regulatory standards, and the manufacturing techniques used. However, generally, up to approximately 30% glass waste can be incorporated into raw material mixtures for brick production without significantly compromising their mechanical properties or durability.
However, challenges remain, particularly regarding the efficient collection and sorting of glass waste, as well as the optimization of production processes to ensure uniform performance and quality of bricks.
Citation

M. MAZA Mekki, (2024-12-24), "Valorization of glass waste in brick manufacturing", [international] 5th International Conference on Scientific and Academic Research , Konya, Turkey

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2024-12-04

Integrating Self-Healing Materials with Sewage Sludge Ash: A Review on Sustainable and Durable Construction Practices

This review explores the integration of self-healing materials and sewage sludge ash (SSA) as a novel approach to advancing sustainable construction. The autonomous repair capabilities of self-healing materials significantly enhance the durability of concrete and mortar, reducing maintenance costs and extending structural lifespan. Simultaneously, SSA, a by-product of wastewater treatment, offers an eco-friendly alternative to conventional construction materials, reducing landfill waste and carbon emissions.
The review evaluates existing studies on the combined application of self-healing technologies and SSA, analyzing their effects on mechanical performance, crack-healing efficiency, and environmental sustainability. Key findings highlight that SSA enhances the microstructural properties of concrete while maintaining the efficacy of self-healing agents such as encapsulated polymers and bacterial spores. Practical challenges, including material formulation optimization and the safe processing of SSA, are critically examined.
By providing an overview of recent advancements and identifying gaps in current research, this review underscores the potential of integrating SSA and self-healing materials to revolutionize sustainable construction. The findings serve as a foundation for future innovations, paving the way for resilient, low-carbon infrastructure solutions.
Citation

M. MAZA Mekki, (2024-12-04), "Integrating Self-Healing Materials with Sewage Sludge Ash: A Review on Sustainable and Durable Construction Practices", [international] International Conference on Growth Innovation Technology and Engineering (ICGTE) 2024 Indonesia , Indonesia

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2024-12-03

Advancing Sustainable Infrastructure: The Synergy of Self-Healing Materials and Sewage Sludge Ash in Construction

This review delves into the intersection of self-healing materials and sewage sludge ash (SSA) as a transformative approach in sustainable construction. Self-healing materials offer the ability to autonomously repair cracks, significantly enhancing structural lifespan and reducing maintenance efforts. Meanwhile, SSA, a by-product of wastewater treatment processes, provides an eco-friendly alternative to conventional cement and fine aggregates, addressing environmental concerns by recycling waste and reducing carbon emissions.
Through a comprehensive evaluation of recent research, this review explores the combined application of these innovative materials, assessing their impact on mechanical properties, durability, and environmental sustainability. Key findings highlight the potential of SSA to improve the microstructure and performance of self-healing concrete, while the integration of advanced repair mechanisms ensures prolonged functionality and resilience under environmental stressors.
The review also identifies existing challenges, including the optimization of SSA processing methods and the compatibility of self-healing technologies with alternative binders. By summarizing state-of-the-art developments and proposing future research directions, this study underscores the potential of combining SSA and self-healing materials to revolutionize construction practices, promoting the development of resilient, low-carbon infrastructure.
Citation

M. MAZA Mekki, (2024-12-03), "Advancing Sustainable Infrastructure: The Synergy of Self-Healing Materials and Sewage Sludge Ash in Construction", [international] 3rd International Conference on Recent Academic Studies ICRAS 2024 , Konya, Turkey

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2024-11-23

Valorization of plastic waste in the manufacture of terracotta bricks

Abstract –
Terracotta bricks are traditional building materials made from clay, molded and then fired at high temperatures, which gives them remarkable strength and durability. Known for their red-orange color, they are appreciated for their resistance to weathering, their thermal stability and their ability to provide good acoustic insulation.
Plastic waste poses a major threat to the environment due to its long decomposition time and its ubiquity in ecosystems.
Waste plastics can be crushed and replaced in percentage with clay used to make terracotta bricks, and the procedure for making terracotta bricks remains similar, but with adjustments to ensure that embedded plastics do not do not compromise the quality of the bricks. This method helps divert plastics from landfills and oceans, thereby reducing pollution, and plastics can improve certain properties of bricks, such as thermal insulation (thus reducing energy requirements for heating and cooling buildings) and lightness (Bricks containing plastic can be lighter than traditional bricks, making them easier to handle and reducing transport costs).
Integrating plastic waste into clay bricks offers firstly an innovative solution to reduce plastic pollution, secondly reducing the demand for natural resources such as clay and sand, thirdly reducing energy consumption for brick manufacturing (lower temperature) while creating sustainable building materials.
Citation

M. MAZA Mekki, (2024-11-23), "Valorization of plastic waste in the manufacture of terracotta bricks", [international] 2nd International Conference on Trends in Advanced Research , Konya, Turkey

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Valorization of plastic waste in the manufacture of terracotta bricks,

Terracotta bricks are traditional building materials made from clay, molded and then fired at high temperatures, which gives them remarkable strength and durability. Known for their red-orange color, they are appreciated for their resistance to weathering, their thermal stability and their ability to provide good acoustic insulation.
Plastic waste poses a major threat to the environment due to its long decomposition time and its ubiquity in ecosystems.
Waste plastics can be crushed and replaced in percentage with clay used to make terracotta bricks, and the procedure for making terracotta bricks remains similar, but with adjustments to ensure that embedded plastics do not do not compromise the quality of the bricks. This method helps divert plastics from landfills and oceans, thereby reducing pollution, and plastics can improve certain properties of bricks, such as thermal insulation (thus reducing energy requirements for heating and cooling buildings) and lightness (Bricks containing plastic can be lighter than traditional bricks, making them easier to handle and reducing transport costs).
Integrating plastic waste into clay bricks offers firstly an innovative solution to reduce plastic pollution, secondly reducing the demand for natural resources such as clay and sand, thirdly reducing energy consumption for brick manufacturing (lower temperature) while creating sustainable building materials.
Citation

M. MAZA Mekki, (2024-11-23), "Valorization of plastic waste in the manufacture of terracotta bricks,", [international] 2nd International Conference on Trends in Advanced Research ICTAR Turkey , Konya, Turkey

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2024-11-19

Valorisation des boues d’épuration en matériaux de construction

La quantité croissante de boues d'épuration devenant un problème urgent et inévitable pour chaque pays, ses applications dans la production de
matériaux de construction et de construction offrent une solution alternative pour l'élimination des boues et la récupération des ressources. Comme pour l'argile et le ciment Portland, les principaux oxydes dans les boues d'épuration sont SiO2 (10–25 %), Al2O3 (5–10 %) et CaO (10–30 %) qui sont augmentés dans les cendres des boues après incinération à 25–50 % , 10–20 % et 15–30 %. Par conséquent, ces déchets solides peuvent être utilisés non seulement comme matière première pour la production d'éco-ciment, de briques, de matériaux céramiques et d'agrégats légers par le processus de frittage, mais également comme adjuvants supplémentaires dans les matériaux cimentaires tels que les composants pouzzolaniques, les agrégats fins ou les matériaux de remplissage.
Citation

M. MAZA Mekki, (2024-11-19), "Valorisation des boues d’épuration en matériaux de construction", [national] The Digitization of Waste Management, a Tool for Environmental Protection and Sustainable Development , Palais des Expositions – Pin Maritime (Pavilion Saoura) Alger, Algerie

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2024-11-16

VALORIZATION OF SEWAGE SLUDGE INTO CERAMIC MATERIALS

Abstract :
The valorization of sewage sludge into ceramic materials is an innovative method to recycle wastewater treatment residues into construction products, thus contributing to more sustainable waste management. This process begins with the dewatering of the sludge, reducing its water content to facilitate its handling. The sludge is then mixed with traditional raw materials, such as clay, to form a homogeneous mixture. This mixture is shaped into bricks, tiles or other ceramic shapes, then fired at high temperatures (usually between 900 and 1200°C). Firing stabilizes the potentially toxic components of the sludge, such as heavy metals, and gives the materials their mechanical, aesthetic and durability properties. The use of sewage sludge in the manufacture of ceramics has several advantages: it significantly reduces the volume of waste to be disposed of, reduces the consumption of natural raw materials, and produces materials with properties comparable to, or even superior to, those of traditional ceramics. However, challenges remain, including the variability of sludge composition depending on its origin, and the need to strictly control contaminants to ensure the safety of finished products.
In short, this recovery is part of a circular economy approach, promoting the reduction of the ecological footprint of sewage sludge while contributing to the production of sustainable and environmentally responsible construction materials.
Citation

M. MAZA Mekki, (2024-11-16), "VALORIZATION OF SEWAGE SLUDGE INTO CERAMIC MATERIALS", [international] INTERNATIONAL CERAMICS AND COMPOSITE MATERIALS SYMPOSIUM, , ISPARTA, TÜRKİYE

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Valorization of sewage sludge into ceramic materials

The valorization of sewage sludge into ceramic materials is an innovative method to recycle wastewater treatment residues into construction products, thus contributing to more sustainable waste management. This process begins with the dewatering of the sludge, reducing its water content to facilitate its handling. The sludge is then mixed with traditional raw materials, such as clay, to form a homogeneous mixture. This mixture is shaped into bricks, tiles or other ceramic shapes, then fired at high temperatures (usually between 900 and 1200°C). Firing stabilizes the potentially toxic components of the sludge, such as heavy metals, and gives the materials their mechanical, aesthetic and durability properties. The use of sewage sludge in the manufacture of ceramics has several advantages: it significantly reduces the volume of waste to be disposed of, reduces the consumption of natural raw materials, and produces materials with properties comparable to, or even superior to, those of traditional ceramics. However, challenges remain, including the variability of sludge composition depending on its origin, and the need to strictly control contaminants to ensure the safety of finished products.
In short, this recovery is part of a circular economy approach, promoting the reduction of the ecological footprint of sewage sludge while contributing to the production of sustainable and environmentally responsible construction materials.
Citation

M. MAZA Mekki, (2024-11-16), "Valorization of sewage sludge into ceramic materials", [international] International Ceramics And Composite Materials Symposium , - ISparta, Turkiye.

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2024-11-15

Utilization of Sewage Sludge Ash in Lightweight Aggregate Production for Sustainable Construction

This paper investigates the alternative use of sewage sludge ash (SSA) for the production of light weight aggregate (LWA) for sustainable construction The main objective is to investigate how SSA can be successfully reused to produce construction materials without reducing environmental contributions. The study examines the processes for converting SSA into lightweight aggregates, focusing on the technological processes and factors that make this application possible. Key benefits include significant reductions in the overall weight of concrete structures, reduced transportation and housing costs, and improved thermal insulation, which improves energy efficiency in buildings to the sky

In addition, the paper discusses the environmental benefits of implementing SSA in LWA operations, such as waste disposal reduction, greenhouse gas emission reduction, natural a will be preserved and also discusses technical challenges including the need for continuous quality improvement and compliance with regulatory standards. Research emphasizes the importance of quality qualitative and strategic approaches to ensure the reliability and efficiency of SSA-based LWAs.

Overall, this study presents SSA as a promising alternative for small aggregates, promoting a circular economy in the construction industry. In producing LWA by turning waste into a value-added product, SSA is a sustainable way to model modern construction practices, contributing to greener and more efficient industries.
Citation

M. MAZA Mekki, (2024-11-15), "Utilization of Sewage Sludge Ash in Lightweight Aggregate Production for Sustainable Construction", [international] International Symposium on Ceramics and Composite Materials , Süleyman Demirel University, Isparta, Turkey

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2024-11-10

Transforming Waste into Resources: Pioneering Approaches in Civil Engineering

The civil engineering industry is rapidly confronting two challenges: minimizing the harmful effects of construction on the environment and managing industrial waste. The concept of turning trash into resources is a fresh approach to addressing these problems, offering innovative solutions in line with the principles of sustainability and resource efficiency.

This study looks at the potential benefits of integrating various industrial wastes such as fly ash, slag, and recycled construction materials into civil engineering processes. Recycling these wastes may significantly reduce our reliance on virgin resources, landfill usage, and construction project carbon footprints.

The use of industrial byproducts in road construction, where recycled materials assist sustainable infrastructure, and in concrete production, where waste materials enhance the durability and performance of concrete, are two areas of focus. This article will also discuss the use of waste materials in soil stabilization, with a focus on the long-term benefits for both improved soil quality and structural stability.

This article, using case studies and the most recent research, demonstrates the economic and environmental advantages of waste valuation in civil engineering. It also discusses the opportunities and technical challenges of using these strategies more broadly. By encouraging the use of waste-derived materials and converting rubbish into valuable resources that aid in the creation of a built environment that is resilient and environmentally friendly, the civil engineering sector can set the norm for sustainable building.
Citation

M. MAZA Mekki, (2024-11-10), "Transforming Waste into Resources: Pioneering Approaches in Civil Engineering", [international] 3rd International Conference on Contemporary Academic Research , Konya, Turkey

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2024-08-25

Revolutionizing Green Construction: A Review on Self-Healing Materials and Sewage Sludge Ash Integration

This review investigates the integration of self-healing materials and sewage sludge ash (SSA) as a pioneering strategy for sustainable and resilient construction. Self-healing materials, with their ability to autonomously repair microcracks, offer a game-changing solution to enhance the durability and lifespan of infrastructure. Simultaneously, SSA, a by-product of wastewater treatment, is presented as a sustainable alternative to traditional cement and aggregates, reducing landfill waste and mitigating the environmental impact of construction activities.

The review synthesizes current advancements in combining these two technologies, focusing on their mutual benefits for mechanical properties, environmental sustainability, and structural integrity. It highlights the ability of SSA to improve the microstructural properties of concrete while preserving the functionality of self-healing agents, such as bacterial spores and polymer capsules. Furthermore, it discusses the challenges of optimizing SSA integration and ensuring compatibility with self-healing systems.

By analyzing recent developments and identifying research gaps, this review underscores the transformative potential of this dual approach. It envisions a future where SSA and self-healing materials jointly contribute to the development of eco-friendly and durable infrastructure, aligning with global sustainability and circular economy goals.
Citation

M. MAZA Mekki, (2024-08-25), "Revolutionizing Green Construction: A Review on Self-Healing Materials and Sewage Sludge Ash Integration", [international] 4th International Conference on Frontiers in Academic Research , Konya, Turkey

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2024-07-19

Characterization and application of sewage sludge in cement products

Sewage sludge ash (SSA) has emerged as a promising supplementary cementitious material (SCM) to enhance the performance and durability of cementitious materials This paper presents a comprehensive review of the characterization and consumption of SSA role in cement structure gives. Chemical composition analysis reveals the presence of silica, alumina, and other oxides important for pozzolanic reactivity. Mineralogical analysis identifies crystalline and amorphous phases, elucidating the potential of SSA. Physical properties such as surface specificity and particle size distribution influence the performance and mechanical properties of cementitious materials Evaluation of pozzolanic activity by different methods determines the amount of SSA contribution to strength development. The study of hydration kinetics clarifies the early life and long-term performance of cementitious systems containing SSA. Technical testing shows increased compressive, tensile and flexural strength of SSA-modified concrete. Developmental performance studies confirm resistance to chloride penetration, sulfate attack, alkali silica reaction (ASR), and carbonation, ensuring durability of SSA-based cement products This study provides valuable insights into Effective application of SSA characteristics and applications to sustainable building practices Simple.
Citation

M. MAZA Mekki, (2024-07-19), "Characterization and application of sewage sludge in cement products", [international] International Conference on Engineering, Natural Sciences, and Technological Developments (ICENSTED 2024) , Erdek, Turkey

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2024-04-19

Use of fly ash in the manufacture of ceramics to improve several properties

Fly ash is a fine residue that is produced during the combustion of coal in coal-fired power plants. They are transported by combustion gases and collected from the chimneys of power plants. Fly ash is mainly composed of fine particles of silica, alumina, iron and other metal oxides.
The use of fly ash in the manufacture of ceramics can improve several properties, such as mechanical strength (they can act as reinforcing agents in ceramics, thus increasing their resistance to bending, compression), strength wear and abrasion (making them more durable in environments subject to heavy wear, this makes them suitable for applications such as flooring, refractory bricks), durability (The addition of ash Fly ash can help control the density and porosity of ceramics), thermal shock resistance and dimensional stability (Fly ash often contains refractory components such as silica and alumina, which improve the thermal stability of ceramics). By judiciously incorporating fly ash into ceramic manufacturing, it is possible to obtain more efficient, durable and economical materials for a variety of industrial and technical applications.
Citation

M. MAZA Mekki, (2024-04-19), "Use of fly ash in the manufacture of ceramics to improve several properties", [international] 2nd International Conference on Scientific and Innovative Studies , Konya, Turkey

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2024-04-18

Harnessing Sewage Sludge for Sustainable Concrete Manufacturing

Wastewater generated from wastewater treatment poses challenges for disposal due to high organic content and potential environmental impacts but alternative wastewater treatment options are being developed in concrete production research. This abstract looks at the feasibility and potential benefits of incorporating wastewater into concrete mixes. Through rigorous characterization and processing, sewage sludge can act as a filler, providing long-term benefits and improving concrete properties Challenges such as changes in water a it is a matter of internal and regulatory constraints of the dirt Yoga: Materials- Can address weed-management issues while promoting efficiency and sustainability.
Citation

M. MAZA Mekki, (2024-04-18), "Harnessing Sewage Sludge for Sustainable Concrete Manufacturing", [international] 2nd International Conference on Scientific and Innovative Studies ICSIS 2024 , Konya, Turkey

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2024-03-15

AI Applications in Environmental Engineering for Sustainable Solutions

Environmental engineering plays a crucial role in addressing sustainability challenges such as pollution control, waste management, and climate change mitigation. In recent years, artificial intelligence (AI) has emerged as a powerful tool for enhancing environmental engineering practices and developing sustainable solutions. This paper presents an overview of AI applications in environmental engineering, focusing on its role in addressing key sustainability issues. The study examines how machine learning algorithms are applied to analyze environmental data, model complex environmental systems, and optimize resource management strategies. The paper discusses specific AI-driven applications in areas such as pollution monitoring, waste treatment, renewable energy integration, and natural resource management. Additionally, the research explores the challenges and opportunities associated with the adoption of AI technologies in environmental engineering, including data availability, model interpretability, and regulatory compliance. By leveraging AI tools and techniques, environmental engineers can gain valuable insights, improve decision-making processes, and develop innovative solutions to advance sustainability goals. Overall, this paper highlights the potential of AI to drive transformative changes in environmental engineering, contributing to the development of sustainable and resilient infrastructure for future generations.
Citation

M. MAZA Mekki, (2024-03-15), "AI Applications in Environmental Engineering for Sustainable Solutions", [international] 4th International Artificial Intelligence and Data Science Congress , İzmir/Turkey

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2024-03-13

Sustainable Road Development Through Sewage Sludge Utilization

As the global population continues to grow and urbanize, the demand for robust and sustainable infrastructure becomes increasingly critical. Traditional road construction materials, such as aggregates and asphalt, contribute to resource depletion and environmental degradation. In response to these challenges, this paper explores the utilization of sewage sludge, a byproduct of wastewater treatment processes, as a sustainable alternative in road construction. Through a comprehensive review of existing literature and case studies, this research investigates the engineering properties and environmental implications of incorporating sewage sludge into road construction materials. The study examines the potential benefits, including improved strength, reduced deformation, and enhanced durability, as well as the challenges associated with processing, treatment, and regulatory compliance. Furthermore, the paper discusses the economic feasibility and social acceptance of integrating sewage sludge into road infrastructure projects. By evaluating the technical, economic, and environmental aspects, this research contributes to a deeper understanding of the viability and potential applications of sewage sludge in sustainable road construction practices. Overall, this study underscores the importance of adopting innovative approaches to infrastructure development that prioritize environmental stewardship and resource efficiency
Citation

M. MAZA Mekki, (2024-03-13), "Sustainable Road Development Through Sewage Sludge Utilization", [international] 4th International Conference on Innovative Academic Studies , Konya/Turkey.

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2023-12-26

Sustainable Construction Practices: Incorporating Recycled Materials in Concrete

As the global construction industry strives for sustainability, the integration of recycled materials in concrete emerges as a promising practice to mitigate environmental impact. This paper provides a comprehensive exploration of the utilization of recycled materials in concrete, focusing on aggregates and cements sourced from construction and industrial waste streams. The study assesses the effects of incorporating recycled materials on the mechanical strength and durability of concrete, scrutinizing properties such as compressive strength, tensile strength, freeze-thaw resistance, and chemical durability.
A key objective is to investigate the potential reduction in carbon dioxide emissions achieved by substituting traditional Portland cement with recycled alternatives. The paper delves into the economic and environmental implications of this shift, aligning with principles of the circular economy by promoting the reuse of construction waste and diminishing reliance on virgin resources. Noteworthy challenges related to the variability of recycled materials are discussed, emphasizing the importance of rigorous research to comprehend and manage these variations for consistent concrete quality.
Furthermore, the study outlines the evolving standards and regulations governing the use of recycled materials in concrete, ensuring the safety and reliability of structures. Innovations in recycling processes and the continuous improvement of material quality are emphasized as crucial components for the success of sustainable construction practices.
Citation

M. MAZA Mekki, (2023-12-26), "Sustainable Construction Practices: Incorporating Recycled Materials in Concrete", [international] 3rd International Conference on Scientific and Academic Research on 25-26 December in 2023 at. , Konya/Turkey

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2023-12-18

A bibliographic study on geopolymers and the valorization of mining waste,The 1st Scientific Days on Materials and Their Applications (SDMA’2023)

The search for an alternative to cement has become an environmental and strategic necessity to reduce the effects of global warming and preserve the energy capacity of energy-importing and energy-exporting countries alike. Geopolymer materials are classified as green materials and may be the alternative solution proposed at the present time due to their advantages. The results of research and studies have shown that these geopolymer materials possess superior mechanical and physical properties, including high early strength, good chemical resistance, low shrinkage, and good thermal resistance. The rise in temperatures in recent years and the global warming scenario has led to an increase in demand for heat-insulating materials, especially in the construction sector. This review includes, based on previous research, previous knowledge of more about the basics of these geopolymer materials the raw materials that go into preparing these compounds and the factors affecting their properties. The good thermal performance of these compounds is considered important and vital to exploit in the production of efficient insulating materials, and it may be a sustainable solution in re-exploiting mineral waste in order to preserve natural resources
Citation

M. MAZA Mekki, (2023-12-18), "A bibliographic study on geopolymers and the valorization of mining waste,The 1st Scientific Days on Materials and Their Applications (SDMA’2023)", [national] (SDMA’2023), , Université de Biskra, Algérie

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2023-11-25

The Utilizing of Sewage Sludge in Construction Domain : Concrete and Mortar

As the global population increases, the generation of sewage sludge also grows, resulting in a need for sustainable and environmentally friendly disposal methods. One potential solution is to utilize sewage sludge ash (SSA) as a partial replacement for traditional cementitious materials in construction applications.In recent years, the increasing population and industrial activities have led to a significant rise in the generation of domestic and industrial wastewater sludge.
This surplus sludge poses a serious environmental challenge as it is often disposed of in landfills, rendering the land unusable. However, researchers and engineers have been exploring innovative ways to utilize sewage sludge in the construction industry.
We aims to provide a comprehensive review of the potential of sewage sludge in construction materials, particularly in concrete and mortar.
Citation

M. MAZA Mekki, (2023-11-25), "The Utilizing of Sewage Sludge in Construction Domain : Concrete and Mortar", [international] 3rd International Conference on Scientific and Academic Research , Konya/Turkey.

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2023-11-19

Commande de réseau d'eau potable automatique

système de commande automatique d'eau potable
Citation

M. MAZA Mekki, (2023-11-19), "Commande de réseau d'eau potable automatique", [national] université Mohamed Boudiaf M'sila

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2023-10-05

Predicting Mechanical Properties of Concrete Using Equivalent Mortar: A Comparative Study

Comprehending the mechanical characteristics of concrete is paramount for its efficient
deployment in construction. This investigation endeavors to predict these properties
utilizing equivalent mortar, furthering previous inquiries on the topic. Literature suggests
a viable approach to create concrete through a method employing both natural and
crushed aggregates. This technique considers the corresponding mortar, amalgamated
with crushed (SC) and dune sand (SD), as a novel mortar. Implementing this method
could curtail the consumption of natural resources while conserving the mechanical
attributes in both fresh (flow) and hardened states (strength and durability). This
approach aims to anticipate the mechanical performance of concretes formulated from
equivalent mortar data. Five mixtures were constituted to discern the optimal blend from
a binary amalgamation of crushed coarse aggregates (30% fraction 3/8 and 70% fraction
of 8/15) sized 3.8mm and 8.15mm, alongside five mixed sand percentages: (30%
SC+70% SD), (40% SC+60% SD), (50% SC+50% SD), (60% SC+40% SD), and (70%
SC+30% SD). The application of super plasticizer was investigated, and the compressive
strength function of coarse aggregate was ascertained at intervals of 7, 14, and 28 days.
The mechanical strength was determined at the 28-day mark. The empirical study
indicates that density attains its zenith when a 40% mortar is incorporated into the
concrete matrix. Conversely, with a 50% SC composition within the mixed sand, the
mechanical strengths achieve acceptable values with moderate CS dosages. Specification
tests reveal that incorporating 50% to 70% mortar into the concrete matrix can yield highquality
concrete.
Citation

M. MAZA Mekki, MAZA Mekki, , (2023-10-05), "Predicting Mechanical Properties of Concrete Using Equivalent Mortar: A Comparative Study", [national] Annales de Chimie - Science des Matériaux , Journal homepage: http://iieta.org/journals/acsm

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2023-09-28

Assessing the Durability of Mortar Incorporating Sewage Sludge Ash under High-Temperature Exposure

– The use of sewage sludge ash, also known as sewage sludge incineration ash (SSIA), as a construction material has gained attention in recent years. This study aims to investigate the effect of SSIA on the durability of equivalent mortar exposed to high temperatures. The exposure of mortar cont5aining SSIA to high temperatures can have various effects on its durability. Some of the potential effects include a reduction in mechanical strength, degradation of the microstructure, weight loss, and the formation of new mineral phases. However, these effects can vary depending on the composition of the SSIA and other components of the mortar, as well as the specific conditions of high-temperature exposure. Further experimental studies are needed to provide more accurate evaluations of the impact of SSIA on the durability of equivalent mortar exposed to high temperatures.
Citation

M. MAZA Mekki, (2023-09-28), "Assessing the Durability of Mortar Incorporating Sewage Sludge Ash under High-Temperature Exposure", [international] 3rd International Conference on Innovative Academic Studies , Konya, Turkey

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Improving sludge management and transforming waste into sustainable resources

Sludge valorization, also called sludge management, is an important field in the treatment of wastewater and solid waste worldwide. Sludge is the solid byproduct generated during the treatment of wastewater in sewage treatment plants. They often contain organic matter, mineral elements and other contaminants, making them potentially harmful to the environment if not properly managed. However, there are many ways to value sludge and use it beneficially rather than simply disposing of it. Here are some of the sludge recovery methods: Composting, Agricultural use, Energy production, Biogas production and Production of construction materials.
Using sludge to make bricks has many environmental benefits, including reducing waste, reducing demand for natural resources, decreasing greenhouse gas emissions, and creating sustainable building products. However, it is essential to comply with local and national environmental regulations and implement strict quality controls to ensure the safety and quality of bricks made from sludge.
Citation

M. MAZA Mekki, (2023-09-28), "Improving sludge management and transforming waste into sustainable resources", [international] 3rd International Conference on Innovative Academic Studies , Konya, Turkey

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DIFFERENT TYPES OF ACTIVATION OF SUPPLEMENTARY CEMENTING MATERIALS

Geopolymers belong to the aluminosilicate family, essentially composed of a raw material that
may be natural, a co-product or an industrial by-product such as blast-furnace slag, fly ash and metakaolin,
or another material that essentially contains silica (SiO2) and alumina (Al2O3) and an alkaline solution. The
use of geopolymers as cementitious materials is currently growing due to their excellent properties and
efficiencies, such as low CO2

emission, high compressive strength, low permeability, enhanced durability,
thermal resistance and excellent stability in acidic and alkaline environments. Geopolymers are obtained
by alkaline activation, often based on sodium or potassium silicate. Many studies have shown that
aluminosilicate materials are activated depending on the type of material used. Alkali-activated mortars
were found to have higher compressive strength than cement mortars. Alkali-activated materials represent
one of the alternatives available that could replace PC in terms of economy, ecology, mechanical
performance and durability. Heat treatment has an influence on the reactivity of materials, and studies show
that mortars based on uncalcined (raw) materials give lower strengths than control mortars based on 100%
cement. Calcination changes the structure of the material to become amorphous, which improves the
compressive strength of mortars, so thermal analysis has a positive influence on the compressive strength
of mortars. The mechanical activation of materials containing a percentage of silica and/or alumina consists
in increasing grain fineness (specific surface area) through advanced grinding. Heat treatment of raw
materials shows significant effects on the mechanical behavior of synthesis product were this later enhance
mechanical strength, But it considering more expensive then mechanical activation which more
economical. However chemical activation has an interesting effect on the development of compressive
strength, but is expensive and difficult to process in an aggressive environment.
Citation

M. MAZA Mekki, (2023-09-28), "DIFFERENT TYPES OF ACTIVATION OF SUPPLEMENTARY CEMENTING MATERIALS", [international] 3rd International Conference on Innovative Academic Studies , Konya, Turkey

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Improving sludge management and transforming waste into sustainable resources

Sludge valorization, also called sludge management, is an important field in the treatment of
wastewater and solid waste worldwide. Sludge is the solid byproduct generated during the treatment of
wastewater in sewage treatment plants. They often contain organic matter, mineral elements and other
contaminants, making them potentially harmful to the environment if not properly managed. However,
there are many ways to value sludge and use it beneficially rather than simply disposing of it. Here are
some of the sludge recovery methods: Composting, Agricultural use, Energy production, Biogas
production and Production of construction materials.
Using sludge to make bricks has many environmental benefits, including reducing waste, reducing
demand for natural resources, decreasing greenhouse gas emissions, and creating sustainable building
products. However, it is essential to comply with local and national environmental regulations and
implement strict quality controls to ensure the safety and quality of bricks made from sludge.
Citation

M. MAZA Mekki, (2023-09-28), "Improving sludge management and transforming waste into sustainable resources", [international] 3rd International Conference on Innovative Academic Studies , Konya, Turkey

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2023-09-09

Effect of Aluminum Waste on Mortar Thermo-Mechanical Behavior

This study examines the effect of aluminum (Al) waste additions on the mechanical performance of mortars at high temperatures. The tested mortars have been formulated with different proportions (0%, 2.5%, 5%, 7.5%, and 10%) by weight of sand after being exposed to five temperatures (50 °C, 150 °C, 200 °C, 400 °C, and 600 °C) without imposed load during heating. Workability, setting time of cement, air content, density, mass loss of mortar, thermal conductivity, porosity and mechanicals strength have been examined. The test results indicate a considerable decrease in workability and strength density of the mortar with the addition of Al. This composite has a well thermal conductivity result with 2.5Al and environmentally friendly than ordinary mortar. Further, the experimental data obtained have suggested that the compressive and the flexural tensile strength have been significantly reduced by 90 % in the mortar samples incorporating 10% Al after being exposed to the high temperature of 600 °C. Moreover, the mechanical strength of that mortar has been quite high at the age of 28 days at elevated temperatures in comparison with that measured at 20 °C. The strength of the mortar with Al can be sufficient for some applications where a lightweight, low-strength mortar is required. The use of Al in the production of low-strength concrete can contribute to more sustainable construction.
Citation

M. MAZA Mekki, (2023-09-09), "Effect of Aluminum Waste on Mortar Thermo-Mechanical Behavior", [national] Praise Worthy Prize , Praise Worthy Prize

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2023-08-24

Micro concrete admixed with white cement with polystyrene

In the construction field, the current research is oriented to the recovery of materials in general, is especially local materials to fight both the soaring prices that knows the way and at the same time ensured the balance nature by solving the problem of pollution that allows the survival of several species that are the major links to the balance of nature. The objective of our work is to lighten the micro-concrete by adding different percentages of polystyrene, and to improve the fluidity and the mechanical strength of the micro-concrete by the incorporation of adjuvant. The results obtained from this research confirm that the rate of 30% of polystyrene gives the most alleviation, 1.5% of adjuvant gives good fluidity and increases the mechanical strength.
Citation

M. MAZA Mekki, (2023-08-24), "Micro concrete admixed with white cement with polystyrene", [international] cukurova,11 th INTERNATIONAL SCIENTIFIC RESEARCHES CONFERENCE , ADANA, TURKEY

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2023-01-29

ECO-MORTARS PROPERTIES FORMULATED BY POLYSTYRENE AND MIXED SAND

In this work we studied a mortar called polyster mortar with white cement. The choice of compositions gives low mortar densities. To remedy this lightness which will influence the mechanical behavior of this mortar, we have incorporated a superplasticizer. Preliminary tests on the dosage and workability led us to vary the dosages of the adjuvant and the rate of polystyrene beads to be introduced into the mortar for the formulations, each batch is prepared in the same way. In fact, the rate of polystene is variable. The purpose of our work is to vary the rate of polystrene and the dosage of superplasticizer in order to obtain the optimum variant.
Citation

M. MAZA Mekki, (2023-01-29), "ECO-MORTARS PROPERTIES FORMULATED BY POLYSTYRENE AND MIXED SAND", [international] , V. INTERNATIONAL ANKARA MULTIDISCIPLINARY STUDIES CONGRESS , Ankara, Türkiye.

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2023-01-27

RECOVERY OF ALUMINUM WASTES IN BUILDING MATERIALS: A REVIEW

In recent years, due to the modern lifestyle, industrial and technological progress has led to a significant increase in the quantity and quality of waste. Waste accumulation problem every year is all over the world. The use of materials from waste in buildings compensates for the lack of natural resources, solves the problem of waste management and provides an alternative technique for protection of the environment. In Algeria, the Ministry of Environment demonstrated that the recycling market is estimated at 23 billion Algerian dinars (about 260 million USD). In this vision, policy makers aspire to establish a real industry for recovery and recycling of waste through the development of several sectors such as plastics, aluminum paper and cardboard, metals, glass, wood, etc. This review assesses Aluminum waste (Al) in concrete as a substitute for aggregates and cement. The physical, mechanical and environmental properties of the materials obtained by substitution of raw materials by Al waste were examined and compared to reference materials. Mining waste in cementitious materials offers good compressive strengths, while the porosity of the concrete and/or mortar is a factor influencing its toxicity.
Citation

M. MAZA Mekki, (2023-01-27), "RECOVERY OF ALUMINUM WASTES IN BUILDING MATERIALS: A REVIEW", [international] , V. INTERNATIONAL ANKARA MULTIDISCIPLINARY STUDIES CONGRESS , Ankara, Türkiye.

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2022-12-12

Use of a Full Factorial Design to Study the Relationship between Water Absorption and Porosity of GP and BW Mortar Activated

geopolymer paste by alkaline solution (alkali + water glass) were investigated. (e e4ect of the combination of GP and BW on the
porosity and absorption of the prepared geopolymer paste was monitored and evaluated by both laboratory and analytical
methods. In this paper, three mortars were made with two sources of geopolymer containing 100% BW and 100% GP and blended
with 90% GP and 10% BW replacements by mass. (e compressive strength, porosity, and absorption of alkali-activated mortar
were concurrently examined. Furthermore, the laboratory results obtained were estimated by the general full factorial design
method. Finally, the analysis of variance was performed using the test results to analyze the importance of the e4ect factors and
their interactions on the selected responses. (e results concluded that mortar activated combined with 10% BW and 90% GP
could be utilized in the industry of construction with minimum pollution problems and environment-friendly building materials,
with the e4ect variables signi:cantly a4ecting the responses.
Citation

M. MAZA Mekki, Zine El Abidine.Rahmouni@univ-msila.dz, , (2022-12-12), "Use of a Full Factorial Design to Study the Relationship between Water Absorption and Porosity of GP and BW Mortar Activated", [national] Advances in Civil Engineering , Hindawi

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2022-06-14

On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar,

The combined use of silica fume (SF) and ceramic waste (CW) for the production of mortar is studied. Sand is replaced by 5%, 10%, 15% and 20% of CW while a fixed 5% percentage (% wt of cement) of SF is used. The results show that the best results are obtained by using silica fume and ceramic waste sand with 15% weight of sand and 5% wt of cement. With the addition of sand ceramic waste (SCW), the mortar compressive strength and density increase, while the porosity displays an opposite trend. The experimental analysis is complemented with theoretical considerations on the matrix strength and related improvements in mechanical behavior. It is shown that the agreement between the experimental values and the estimated values is good.
Citation

M. MAZA Mekki, (2022-06-14), "On the Combination of Silica Fume and Ceramic Waste for the Sustainable Production of Mortar,", [national] Fluid Dynamics & Materials Processing 2023, 19(5), , Tech Science Press

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2022-04-08

Combined impact of replacing dune sand with glass sand and metal fibers on mortar properties

This paper presents an experimental study on the influence of metal fibers on the mechanical behaviour of mortar with glass sand. Four mortar mixtures with glass filler and metals fibers are manufactured. The specimens were prepared with three percentages of glass sand (0%, 5%, 10%) and 1%, 2% by vol of steel fibers. The Air-Entraining Agent (A-E-A) dosages at the ratios of 0.08% of cement weight were used. The mechanical tests were carried out on the specimens such as the compressive strength, the tensile strength and the porosity. The results showed that the tensile and bending properties of all different mixtures with fibers are significantly higher compared to the reference mortars. A remarkable decrease has been observed in water, density and compressive strength of mortar with chemical admixture. Moreover, the using 1% volume fraction of steel fibers and 10% glass sand, flexural strength of mortar was completely improved.
Citation

M. MAZA Mekki, (2022-04-08), "Combined impact of replacing dune sand with glass sand and metal fibers on mortar properties", [national] Revue des Composites et des Matériaux Avancés-Journal of Composite and Advanced Materials , IIETA

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2022-02-21

Impact of Rolled and Crushed Aggregate with Natural Pozzolan on the Behavior of HPC

High performance concrete (HPC) has several advantages in building construction that cannot be achieved using conventional concrete in terms of strength durability, resistance to chemical attack, and workability of high performance concrete are high. The introduction of fillers and additives contributed to the improvement of high-performance concrete (HPC), other parameters also influence the performance of these HPCs, coarse aggregate fraction is known to strongly influence both fresh and hardened concrete’s properties. Consequently, selection of both content and particle size distribution for (HPC) mixture is an important issue regarding the predicted performance of concrete. For to make concrete more improvement , the porosity of the granular skeleton as well as the rheology of our HPC, 3/8 fraction of rolled gravel with smooth and rounded surfaces was introduced, in substitution for the crushed gravel of the same fraction , by testing various combinations of fractions 3/8 of rolled gravel and fraction 8/15 of crushed gravel in the present study, and based on previous results obtained the combinations 35,40 and 45% fraction 3/8 of rolled gravel and 65 , 60 and 55% fraction 8/15 of crushed gravel (binary granular system) respectively, gives a minimal porosity . Super plasticizer and four percentages of pozzolan were experimented. Compressive strength function of coarse aggregate was determined at 7, 14 and 28 days. Results have revealed that the mixtures with modified granule size distribution system ,1.5% of superplasticizer and 5% by weight of pozzolan allow an improvement in the compressive strength of 35.1% relative to the control concrete.
Citation

M. MAZA Mekki, (2022-02-21), "Impact of Rolled and Crushed Aggregate with Natural Pozzolan on the Behavior of HPC", [national] Annales de chimie - Sciences des matériaux , IIETA

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2021-12-26

Combined Effect of Marble Waste as Powder and Aggregate Form on the Proprieties of the Mortar

Recycling and recovery of waste are now considered as a solution for the future to protect the environment. The marble processing workshops on the other hand, generate a large amount of waste in the form of powder and small parts. Due to these facts, the aim of this study is to valorize marble waste in the form of powder and crushed aggregates (sand) as additions in cementitious matrix building materials. The characterization of the materials used to formulate mortars based on natural dune sand with marble powder and mortars based on mixed sand (dunes sand and crushed sand) and marble powder was measure. In this sense, several series have been studied, varying the addition rate of the marble powder in order to reduce the porosity of the cement matrix, using crushed marble sand to increase the granular cohesion and using of a reducing water admixture (MEDAPLAST SP40) for more performance mortars. Very appreciable results were observed for a dosage of 15% of marble powder and for the combination of 15% of marble powder with 20% of crushed marble sand. This research recommends recycling 35% of marble waste in the cement matrix that contribute effectively to the preservation of the environment.
Citation

M. MAZA Mekki, (2021-12-26), "Combined Effect of Marble Waste as Powder and Aggregate Form on the Proprieties of the Mortar", [national] Annales de Chimie - Science des Matériaux , Annales de Chimie

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2021-09-02

Combined effect of high temperatures and crystalline slag on the mechanical behavior of geopolymers mortars

As part of protecting the environment from carbon dioxide emissions, all research aims to reduce the use of cement in concrete with cheaper and energy efficient materials. Geopolymer mortar is an environmentally friendly mortar made from industrial solid waste and by-products such as crystalline slag (CS). This research aims to produce a geopolymer mortar from local materials available in Algeria which are not sufficiently valued at present. The aim of this study is to provide geopolymer mortar at high temperatures, operating with a constant hardening temperature of around 60° C. The alkaline activator used in this study was a combination of sodium silicate (Na2SiO3) and 10 M NaOH solution. In addition, crystalline geopolymer mortars (MCS) as the binder material at a curing temperature of 60 °C, ratios of two mixtures of binder were prepared by substituting the sand with 40% CS and 100% CS. For this purpose, the mortar sample with the highest compressive strength was subjected to temperatures of 200, 400, 600 and 800 °C for exposure times of 10 °C per minute and changes in temperature and changes in the physical and mechanical properties was analyzed. As a result of the experiments, the highest mechanicals values were obtained from the mortar samples with a 40% CS content. Following the high temperature tests, 400 °C and 600 °C were determined as critical temperatures for changes in mechanical properties and changes in physical properties, respectively. However, the geopolymer mortars lost around 60% of strength at 800 °C which is the final temperature.
Citation

M. MAZA Mekki, (2021-09-02), "Combined effect of high temperatures and crystalline slag on the mechanical behavior of geopolymers mortars", [national] . Materials Today: Proceedings , sciencedirect

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2017-09-08

4) COMBINED EFFECT OF SILICA FUME AND ADDITIVE ON THE BEHAVIOR OF HIGH PERFORMANCE CONCRETES SUBJECTED TO HIGH TEMPERATURES,

This study examines the effect of the additions of silica fume and super plasticizer on the
mechanical performance of high performance concretes at high temperatures. The tested concretes are
formulated with 5% silica fume and two dosages of super plasticizers in the ratio of (2%, 2.5%) the
weight of cement after having been exposed to four maximum temperatures, 200 °C, 400 °C, 600 °C and
900 °C without any imposed load during the heating. The results obtained show that the mechanical
resistance at 28 day increases with the degree of temperature compared to that measured at 20 °C. On the
contrary, a clear decrease is observed between 600 °C and 900 °C. However, material composition seems
to have great influence on the mechanical strength.
Citation

M. MAZA Mekki, (2017-09-08), "4) COMBINED EFFECT OF SILICA FUME AND ADDITIVE ON THE BEHAVIOR OF HIGH PERFORMANCE CONCRETES SUBJECTED TO HIGH TEMPERATURES,", [national] Mining Science , mining Science

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