Use of Demolished Coarse Aggregate Waste in Partial Replacement of Coarse Aggregate in Concrete

An Experimental Study on Partial Replacement of Coarse Aggregate with Demolished Waste in Concrete

Abstract

There is a large amount of demolished waste generated every year in India and other developing countries. Since very small amount of this waste is recycled or reused. So, disposing this waste is a very serious problem because it requires a large amount of space. This study is a part of comprehensive program wherein experimental investigations have been carried out to evaluate the effect of partial replacement of coarse aggregate by demolished waste on compressive strength and workability of DCAC (Demolished Coarse Aggregate Concrete). For the study 7, 14 and 28 days compressive strengths were recorded. The previous study on this project shows that the compressive strength of the DCAC (Demolished Coarse Aggregate Concrete) is somehow resembles with the conventional concrete if used in a proper amount up to 25%. So in this study we have taken the demolished coarse aggregate 5%, 15%, 25% by weight of the conventional coarse aggregate and the concrete cubes were casted by that demolished coarse aggregate concrete then further tests conducted such as workability , compressive strength for that DCAC and the result obtained are found to be comparable with the conventional concrete.