Published Paper Details:

During the extraction and mining process of rocks and demolition of structures Quarry Dust and Recycled Aggregate are obtained which are basically waste materials. Due to increase in use of fine and coarse aggregates in construction industry it has become essential to find out an economic substitute for these materials which can be used in concrete. So in our study we are using Quarry Dust and Recycled Aggregate as an economic substitute for fine and coarse aggregates and checking their characteristics by comparing it with conventional concrete. Quarry dust obtained from Budera Quarry Mines near Raipur district and recycled aggregate is obtained from demolished old building in Raipur district. Here M20 mix of concrete of ratio 1:1.5:3 (Cement: Fine aggregate +Quarry dust: Coarse Aggregate +Recycled aggregate) and water cement ratio of 0.40 is used for preparing test samples by replacing fine and coarse aggregate with quarry dust and recycled aggregate in percentages varying from 0%, 10%, 20%, 30%, 40% and 50% by weight organized as A1, A2, A3, A4, A5, A6 respectively. The test results obtained from fresh and hardened concrete tests shows clearly that more than 40% replacement causes decrease in strength and workability of concrete hence the percentage of mix shall be kept upto 40%.