COMPREHENSIVE REVIEW OF CONCRETE PROPERTIES ENHANCED WITH MARBLE POWDER AND PLASTIC GRANULES: EXPERIMENTAL ANALYSIS AND FUTURE DIRECTIONS

Abstract: The increasing environmental concerns and need for sustainable construction have spurred research into using plastic waste in concrete. This review paper comprehensively analyzes the current knowledge on incorporating plastic waste into concrete, focusing on its effects on mechanical properties, durability, thermal performance, and overall sustainability. The use of plastic waste in concrete provides an effective solution for mitigating plastic disposal issues and enhances certain concrete properties, making it a viable alternative to traditional materials. Key findings indicate that plastic aggregates reduce compressive strength but increase flexural strength, beneficial for applications needing enhanced flexural performance. Durability studies show that plastic-modified concrete has improved freeze-thaw resistance, reduced water absorption, and lower permeability, making it suitable for harsh environments. Thermal properties are also improved, with lower thermal conductivity and better insulation. Additionally, plastic waste enhances concrete's workability and flowability, facilitating easier handling and placement. From a sustainability perspective, using recycled plastic in concrete reduces the demand for natural aggregates and minimizes landfill waste. However, research gaps include the need for long-term environmental impact studies, comprehensive economic analyses, and standardized methodologies to ensure reliable findings. In conclusion, integrating plastic waste into concrete offers promising benefits for sustainable construction. Further research is needed to address existing gaps and optimize plastic-modified concrete for broader use, promoting a circular economy and sustainable development in the construction industry