A Study on Properties of Concrete Using Silica Fume and Brick Aggregate

Abstract

An extensive investigation was carried out for recycling of demolished brick aggregate concrete as coarse aggregate. This paper explains behaviour of brick aggregate concrete with addition of SF while partial replacement of OPC. Natural coarse aggregate was replaced by brick aggregate and OPC was replaced by SF in various substitutions, i.e. 5, 6, 7, 8, 9, 10, 12 and 14% (by weight), respectively. The objective of the paper is to improve strength and also make durable concrete by using brick aggregate and SF. An experimental investigation has been carried out for concrete samples having silica fume at a constant slump. Effect of brick aggregate with silica fume on workability, compressive strength, dynamic Young’s modulus of elasticity and UPV was investigated. It was found that strength of concrete increases with an increase in SF contents up to 10%, and beyond this limit the strength will be gradually decreasing. It was concluded that the use of SF up to 14% of brick aggregate concrete can be effectively utilized in performance of concrete.