Enhanced temperature effect on properties of concrete with partial replacement of coarse aggregate by blast furnace slag

Abstract

Concrete will not burn when it under fire (Elevated Temperature) and it also will not emits any flumes but there will be chemical reactions taken place, this proposed work is an effort underway to investigate the impact of enhanced temperatures on different properties of conventional and concrete with Blast furnace slag as an additive. In this analysis, effect on compressive strength, split tensile strength and flexure strength was investigated for partially replacement of coarse aggregate by using Blast furnace slag by 20 %, 40% and 60% with addition 1 % of steel fibers. The said samples where heated from 200 °C to 1000°C in the increment of 200°C for 1.5 hour. The compressive strength, split tensile and flexure strength was executed for heated samples at different temperature at 28 days. At enhanced temperature BS1 (20%blast furnace slag +1% steel fibre) found suitable combinations compared to conventional concrete and other replacement.