The improper disposal of Waste Polythene Water Sachets (WPWS) has become a significant environmental concern, contributing to drainage blockages, soil degradation, and pollutants to the environment. This study explores the potential of repurposing WPWS as a replacement for Ordinary Portland Cement (OPC) in the production of concrete paving stones. Experimental mixes were prepared with replacement levels of 50%, 60%, and 70% WPWS alongside a control in triplicate samples, and each specimen was cured using portable water for 7, 14, and 28 days before subjecting the concrete stones specimen on compressive strength and sorptivity tests. The result indicates linear increase in strength development across all curing age and 28-days provides 4304.76, 2819.04 and 2990.47 kg/m3 densities of concrete and compressive strength of 20.1, 18.2 and 19.9 N/mm2 for pave stones impregnated with WPWS by 50, 60 and 70% respectively. The durability of the polymer concrete was minimally affected through sorptivity haven significant value of inflow of water at the middle age curing of pave stone at 70% replacement compared with 50 and 60% of WPWS but however, minimal value of 1.0954 (mm/min-??) was obtained at 70% of WPWS at 28-days compare to control, 50 and 60% replacement. The perception of this study demonstrates that incorporating WPWS into paving stones offers a sustainable waste management solution, reduces environmental hazards, and aligns with circular economy principles. These findings provide a foundation for optimizing mix design and enhancing the bonding characteristics of recycled polyethylene materials in concrete production.
Karikati et al. (Tue,) studied this question.