The rapid increase in infrastructure development and urbanization has resulted in excessive consumption of natural construction materials and increased environmental pollution due to industrial and agricultural waste generation. The present study focuses on the development and performance evaluation of waste-derived sustainable construction materials (SCMs) for high-performance infrastructure applications. Industrial and agro-based wastes such as Fly Ash (FA), Rice Husk Ash (RHA), Ground Granulated Blast Furnace Slag (GGBS), and Multi-Layer Plastic Waste (MLP) were utilized as partial replacement materials in concrete composites to enhance sustainability and reduce environmental impact. The experimental investigation included material characterization, mix design preparation, specimen casting, curing, and testing of mechanical and durability properties. Different replacement levels of 5%, 10%, and 15% were investigated to identify the optimum sustainable mix proportion. Mechanical properties including compressive strength, split tensile strength, and flexural strength were evaluated along with durability parameters such as water absorption, permeability, and abrasion resistance. The results indicated that the incorporation of FA, RHA, and GGBS significantly improved the compressive strength and durability performance of concrete due to enhanced pozzolanic reactions and microstructural densification. Plastic waste addition improved lightweight characteristics and thermal insulation properties at optimized replacement levels. The optimum SCM mix exhibited superior mechanical performance and reduced permeability compared to conventional concrete. Furthermore, Life Cycle Assessment (LCA) demonstrated a significant reduction in CO? emissions, energy consumption, and landfill disposal burden. The study concludes that waste-derived sustainable construction materials provide an environmentally friendly and economically viable solution for sustainable infrastructure development. The research supports circular economy principles by integrating waste management with construction engineering for the development of eco-friendly and high-performance construction materials.
Introduction
The text presents a study on sustainable construction materials developed by incorporating industrial, agricultural, and plastic wastes into concrete. The construction industry is a major contributor to natural-resource depletion, energy consumption, and carbon emissions, while wastes such as Fly Ash (FA), Rice Husk Ash (RHA), Ground Granulated Blast Furnace Slag (GGBS), and Multi-Layer Plastic Waste (MLP) create significant disposal and environmental problems.
The study aims to develop a high-performance, waste-derived concrete using these materials and assess its mechanical properties, durability, environmental impact through Life Cycle Assessment (LCA), and cost effectiveness.
A conventional concrete mix (CM) was used as the control. Specimens were cured for 7, 14, and 28 days and tested for compressive strength, split tensile strength, flexural strength, and durability properties such as water absorption, permeability, and abrasion resistance.
Key Results
The results show that incorporating waste materials generally improved concrete performance.
SCM-10 achieved the highest compressive strength, reaching 46.2 MPa at 28 days, compared with 38.4 MPa for conventional concrete.
Split tensile strength also increased, with SCM-10 achieving 4.10 MPa, compared with 3.25 MPa for conventional concrete.
SCM-15 performed better than the control but lower than SCM-10, indicating that excessive replacement may reduce the performance benefits.
The improvement is attributed to pozzolanic reactions, better hydration, and microstructural densification provided by FA, RHA, and GGBS.
Conclusion
The present study investigated the development and performance evaluation of waste-derived sustainable construction materials for high-performance infrastructure applications. The incorporation of Fly Ash, Rice Husk Ash, GGBS, and plastic waste significantly improved the mechanical and durability properties of concrete while reducing environmental impact.
The SCM-10 mix exhibited optimum performance with maximum compressive, tensile, and flexural strength along with reduced water absorption and improved durability. The Life Cycle Assessment confirmed significant reductions in carbon emissions and energy consumption.
The research demonstrates that waste-derived sustainable construction materials provide an environmentally sustainable, economically feasible, and technically efficient solution for modern infrastructure development. The study supports circular economy principles by integrating waste management with sustainable construction engineering.
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