Published Paper Details:

In developing countries like India, the generation of construction and demolition (C &D) waste is increasing day by day. On the other hand, the reuse of construction waste is highly essential to preserve natural resources. Using the demolished concrete debris as recycled concrete aggregate conserves natural aggregates, reduces the impact on landfills, decreases energy consumption and can provide cost savings. The use of recycled aggregates in concrete results in significant economical and environmental benefits. In the present work, attempts have been made to assess the effect of recycled concrete aggregate on the strength of ordinary concrete. A study has been made on the properties of recycled aggregate which is to be used as coarse aggregate for M25 grade of Concrete. The percentage of recycled aggregate that partially replaced natural aggregate by weight was 0%, 10%, 20%, 30% and 40%. Concrete cubes were casted and tested in laboratories. Properties of aggregate and comparison of recycled aggregate concrete against natural aggregate concrete is performed according to requirements as such for its workability, compressive strength test. The results show that up to 30% replacements of natural aggregate with recycled aggregate there is a slight decrease in strength when compared with conventional concrete. But beyond 30% replacement there is a sudden fall in strength. The goal of this study is to develop the economical and sustainable concrete by using the concrete waste available in the site.