Author : Aishwarya Sushil Sangolkar 1
Date of Publication :23rd March 2017
Abstract: During the 20th century there has been an increase in the consumption of mineral admixtures by the cement, sand and concrete industries. This rate is expected to increase and the increasing demand for cement, sand and concrete is met by partial cement replacement. Substantial energy and cost saving can result when industrial by-products are used as a partial replacement for the energy intensive Portland cement and manufactured sand for natural sand. The presence of mineral admixtures in concrete is known to impart significant improvements in workability and durability. The use of by-products is an environmental friendly method of disposal of large quantities of materials that would otherwise pollute land, water and air. This paper presents the experimental study to investigate the influence of partial replacement of cement by Fly Ash (FA) & Rise Husk Ash (RHA) and Natural sand with Quarry Sand (QS) on the concrete compressive strength, split tensile strength and flexural strength by better understanding of chemistry of constituents of the concrete mix. The use of by-products is an environmental friendly method of disposal of large quantities of materials that would otherwise pollute land, water and air. This study focuses on utilization of waste Pozzolona products such as Fly Ash (FA) and Rice Husk Ash (RHA) as partial replacement to OPC and natural sand by Quarry Sand (QS) to produce blended concrete with an objective to increase the optimum percentage of replacement of pozzolona to OPC without affecting the concrete properties.
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