STRENGTH PARAMETERS OF CONCRETE USING GROUNDNUT SHELL ASH AND RECYCLED CONCRETE AGGREGATE AS PARTIAL SUBSTITUTION OF OPC-43 AND COARSE AGGREGATE

Groundnut shell Ash is a waste material which is derived during the burning of waste ground nut shells, while recycled concrete aggregate is obtained from various construction wastes. This experimental work is conducted to develop recycled (Groundnut shell ash-recycled concrete aggregate) concrete by using groundnut shell ash as percentage substitution of OPC-43 and recycled concrete aggregate as percentage substitution of Natural aggregate. OPC-43 was partially replaced at different ratios of groundnut shell ash (2.5%, 5%, 7.5%, 10%, 12.5% and 15%) and coarse aggregate was replaced at fixed percentage of recycled coarse aggregate (50%). In all the concrete mix, the water-binder ratio of 0.45 and slump of (50-90mm) is used. Different tests were performed, so as to evaluate various mechanical and durable properties of concrete. It was observed that the strength of concrete containing Groundnut shell ash and Recycled concrete aggregate gives satisfactory results up to 7.5% replacement of ground nut shell ash and above that percentage, results are not satisfactory. The main purpose of using Recycled concrete aggregate and Groundnut shell ash in concrete is to utilize various environmental hazardous waste materials such as groundnut and ceramic Recycled concrete aggregate in making Recycled concrete.