Strength Properties of Concrete by Partial Replacement of Course Aggregate with C & D Waste and Fine Aggregate with Foundry Sand for M25 Grade Concrete

Abstract

Concrete is most consumption in the world after the water. Commonly concrete is composed with cement and aggregates. In now a day’s aggregates is depletes in nature, cost is also high due to more consumption of concrete. On Other hand construction and demolition waste (C & D waste) and industrial by-product like a waste is produce millions of tons per year, so the disposal of waste is major problem that is dumping. So utilize some amount of waste product to make concrete. Hence in the current study an attempt has been made to minimize the cost of aggregates and effectively utilizing the C & D waste and foundry sand by utilizing with concrete mix M25 by studying the mechanical behavior of this concrete mix by partially replacing fine aggregate with foundry sand and coarse aggregate with C & D waste. In this study partial replacement5of fine5aggregate with foundry sand5and coarse aggregate with C & D waste, also adding polypropylene fiber (0.3%). Experimental study is conducted to evaluate strength characteristic of hardened concrete. The fine aggregate has been replaced with foundry sand in the range of 0%, to 30% by weight of fine aggregate and partially replacing coarse aggregate with C & D waste in the range of 0%, to 40% by weight of coarse aggregate, with and without adding polypropylene fiber. The optimum strength of concrete mix is obtained for the represent of 20% foundry sand and 30% C & D waste.  Also optimum mix combination specimens are prepared and determine their mechanical property at testing dates of curing.