Strength aspects of High Performance Concrete by using Waste Material as replacement of Fine Aggregate in various percentages

Abstract

High Performance Concrete (HPC) is becoming extremely popular now a day in applications, which require substantial improvements in structural capacity and resistance to aggressive environments. Several researchers have tried different mineral admixtures like Fly Ash (FA), Silica Fume (SF) and Ground Granulated Blast Furnace Slag (GGBS) in producing HPC. These admixtures are generally by-products of other industries and hence their properties are not identical and it is very difficult to assure the quality. This paper proposes a relatively new mineral admixture called High-Reactivity Metakaolin (HRM) with potential utility in the production of High Performance Concrete. In recent years Metakaolin is identified as a new pozzolanic admixture which is cost effective, cheaper and can also be considered as best alternative to micro silica. To achieve the economy, Metakaolin which is derived from purified kaolin clay is adding with ordinary Portland cement as partial replacement. In additional strength add with Glass fiber to use for ordinary Portland cement. The Fiber used in this investigation is E-Glass fiber made from glass material of size 6mm and 12mm diameter respectively. Except for control concrete, quarry waste fine aggregate was used in all concretes as a partial replacement of natural sand. The effects of quarry waste fine aggregate on several fresh and hardened properties of the concretes were investigated. It was found that quarry waste fine aggregate and waste recycling coarse aggregate enhanced the slump and slump flow of the fresh concretes. But the unit weight and air content of the concretes were not affected. The overall test results revealed that quarry waste fine aggregate can be utilized in concrete mixtures as a good substitute of natural sand. The experimental work comprises of Compressive Strength test, Split Tensile strength test and Flexure test was conducted. In this experimental investigation, M30 grade were obtained by replacing 0 to 15% replacement of quarry dust instead of Fine aggregate, 0 to 10% of Metakaolin added as supplementary in cement. It shows better result in the mix of 7.5% of Metakaoiln, 0.5% of fiber and 10% of quarry dust in concrete. © 2020 Published under licence by IOP Publishing Ltd.