ERIMENTAL INSIGHTS ON PROXY BY CRUSHED ROCK SAND WITH NATURAL SAND AND VOLCANO ASH WITH BINDER ON M40 GC (KEY IJP************728)

• P Subhasri,Shaik Dadavali

Abstract

The construction industry is affected by the constant growth in the populations of urban areas. The demand for cement production has an increasing environmental impact, and there are urgent demands for alternative sustainable solutions. Volcanic ash (VA),Calcinated Natural Pozzolanic for use as a Mineral Admixture in Portland Cement Concrete. It can be suitably used in cement, mortar, and concrete. On the other hand, in the past few decades, the availability of suitable natural sand for concrete production near the point of consumption has been exhausted around many populated regions in the world. This has led to a search for a new replacement material; therefore mentioned surplus fines from crushing operations are expected to be the next best alternative due to both great availability and suitable physical properties. There is a lot of pressure to stop using natural sand and instead use crushed rock sand (CRS) in concretes.This paper presents comprehensive details of the physical, chemical properties of volcanic ash and crushed rock sand. It also covers effect of volcanic ash and crushed rock sand the slump, compressive strength, tensile strength and flexural strength. The Crushed Rock Sand(CRS) were taken on 0%, 10%, 20%, 30%, 40%, with replacement of fine aggregate and Volcano Ash(VA) were taken on constant 10% with replacement of cement on M40 Grade. It holds paramount significance as it not only serves to substitute natural sand and cement but also plays a vital role in reducing construction expenses. Because of the severe shortage in many locations, as well as expense and environmental concerns, an alternative is being considered.Keywords: crushed rock sand, volcano ash, pozzolanic, mortar and surplus fines.