An Experimental Study on Partial Replacement of River Sand by Manufactured Sand in Self-Compacting Concrete

Abstract

Abstract: SCC was first developed in Japan to achieve durable concrete structures in 1980’s. Self-compacting concrete (SCC) is an innovative concrete which can be placed and compacted under its own weight with little or no vibration effect and at the same time cohesive enough to be handled without segregation or bleeding. Adoption of SCC offers substantial benefits in enhancing construction productivity, reducing overall cost, and improving work environment. Cost reduction in the building is the primary objective in developing countries like India. This paper puts forward the applications of manufactured sand as an attempt towards sustainable development in India. It will help to find valuable solution to the declining availability of natural sand to make eco-balance. Manufactured sand is one among such materials to replace river sand, which can be used as an alternative fine aggregate in mortars and concretes. The use of manufactured sand in concrete is gaining momentum these days. The present experimental investigations have been made on concrete using manufactured sand as fine aggregate and observed the effects of crushed manufactured sand on strength properties of concrete. The application of concrete meeting the specification is of paramount importance, to ensure construction of durable R.C.C. structure. A well processed manufactured sand as full replacement to river sand is the need of the hour as a long-term solution in Indian concrete industry until other suitable alternative fine aggregate are developed.