Experimental Study Of Lightweight Concrete Incorporating Coconut Shells And Glass Pieces

This study investigates the potential of lightweight concrete formulated with recycled coconut shells (CS) and glass Pieces (GP) as partial substitutes for conventional aggregates. With a focus on sustainability, the study explores the impact of varying proportions of CS and GF on the mechanical properties, durability, and workability of concrete. The study meticulously examines the mechanical and performance characteristics of concrete mixtures where varying proportions of coconut shells and crushed glass serve as substitutes for conventional coarse aggregates. Notably, the composite aggregate mix achieved a maximum impact value of 34.05%, reflecting a remarkable 55.55% enhancement from the baseline value of 21.89%. Furthermore, the abrasion resistance of the mix improved significantly to 42.68%, representing a 42.07% increase over the original value of 30.04%. The crushing value also demonstrated a substantial rise to 41.14%, indicating a 45.57% increase compared to the traditional aggregate value of 28.26%. Compressive strength evaluations at 7 days showed an improvement from 20.72 N/mm² to 22.18 N/mm² with an 18% substitution, although subsequent increases in replacement levels led to a reduction in strength. By 28 days, compressive strength further increased from 30.81 N/mm² to 32.07 N/mm² with a 24% replacement, although further substitutions yielded diminished strength outcomes. The findings substantiate the viability of employing recycled materials, such as coconut shells and glass fragments, to enhance the sustainability and performance of concrete