The Effect of Adding Crushed Sand on the Mechanical Performance of Concrete Used in Aggressive Environments in the Region of Touggourt

Abstract

The objective of This research is to study the influence of crushed sand on enhancing the mechanical performance of ordinary concrete with a class rating of (35/45) when exposed to aggressive environmental conditions, particularly in the presence of rising waters. To achieve this goal, we combined natural sand with crushed sand in the following proportions (0%, 40%, 45%, 50%, 55%, 60%, 100%). The experimental results show an improvement in the compressive, flexural, and tensile strength of the hardened concrete after 7 days, 28 days, and 90 days, especially with an optimal replacement rate of 50% crushed sand in comparison to natural sand.