Utilizing Recycled Glass as Partial and Total Replacement of Fine Aggregate in Structural Concrete

Abstract

This study focuses on the use of recycled glass as a partial and total substitute for natural fine aggregate in the production of structural concrete. It experimentally investigates the impact of glass utilization on the properties of both fresh and hardened concrete through a comprehensive testing program covering consecutive replacement ratios ranging from 0% up to 100%, and the evaluation includes workability (slump), density, compressive strength, and durability performance to establish the optimum and safe-replacement levels. Furthermore, the study incorporates advanced numerical analysis using finite element software, whereby it implements the Concrete Damage Plasticity (CDP) model in Abaqus to simulate the structural behavior, stress distribution, and failure patterns of the concrete specimens. Plasticity parameters, including the dilation angle and viscosity, are calibrated for the various mixes and validated against the laboratory experimental outcomes. Findings, consequently, provide practical and scientific recommendations for green concrete production, emphasizing the environmental and economic advantages of reducing natural sand dependency and promoting the circular utilization of glass waste.