Durability of Ultra High Strength Concrete with Waste Granite Sand as Partial Substitute for Aggregate

Abstract

Waste Granite Sand (WGS), a derivative from granite processing industry is a useful material when employed as substitute for quartz sand in the production of Ultra High Strength Concrete (UHSC). Use of WGS as a partial substitute for quartz sand has shown good physical and mechanical characteristics. In addition, the durability study will ensure better dependability in the usage of this material. In this research work, the durability response of UHSC produced with WGS as partial replacement to quartz sand was evaluated. Experiments were conducted with replacement ranging from 0% to 40% weight of quartz sand with WGS. Also the effect of curing regime (normal, steam and heat) on durability characteristics was assessed. The test results indicate that the incorporation of WGS up to 30% improves the durability. Reasonably 40% replacement can be used for producing UHSC. UHSC subjected to accelerated curing system exhibited better performance. Dense microstructure due to granular compactness and low water—binder ratio is attributed to this superior performance.