Innovating Concrete with Recycled Plastic (HDPE) Aggregates

This research investigates the performance of HDPE plasto sand coarse aggregate concrete using a water-cement (w/c) ratio of 0.60. Four different handmade aggregate types with ratios of 1:1, 1:2, 1:3 and 1:4 was utilized to assess the mechanical and durability properties of the concrete. Comprehensive tests, including compressive strength, tensile strength, and durability assessments, were conducted to evaluate the effectiveness of HDPE aggregates in concrete. The integration of recycled high-density polyethylene (HDPE) aggregates offers a sustainable alternative in concrete production. This study assesses the feasibility and effectiveness of utilizing recycled plastic aggregates to enhance concrete performance through material characterization studies to understand the physical and mechanical properties of HDPE aggregates and their compatibility with cementitious matrices. The influence of varying proportions of recycled plastic aggregates on the fresh and hardened properties of concrete is also investigated. Principal findings reveal that recycled HDPE aggregates can positively impact concrete properties, contributing to improved workability without compromising mechanical strength. Additionally, the use of recycled plastic reduces the environmental footprint of concrete production by diverting plastic waste from landfills. In conclusion, this research underscores the viability of innovating concrete with recycled plastic aggregates, presenting a sustainable solution for addressing environmental concerns while enhancing material performance. The findings hold significant implications for the construction industry, advocating for eco-friendly practices in concrete production.