Assessment Of Durability And Mechanical Properties Of Sustainable Lightweight Concrete Using Mineral Aggregates

Abstract

This study focuses on the formulation and evaluation of lightweight concrete by incorporating perlite and vermiculite as partial substitutes for traditional aggregates. The concrete specimens were prepared using three replacement levels—5%, 7%, and 10%—to analyze their influence on physical characteristics, mechanical performance, and durability. In addition to measuring density and compressive strength, durability parameters. These evaluations adhered to the specifications in IS 456:2000 and IS 516:2018. Findings demonstrated that although compressive strength slightly decreased with increased substitution, the concrete retained adequate load-bearing capacity and exhibited enhanced and acceptable durability, making it appropriate for energy-efficient and lightweight structural applications.