Experimental Study on Compressive Strength of Recycled Coarse Aggregate Concrete

The following project report is a experimental demonstration of the comprehensive use of (RCA). It state that recycled concrete aggregate (RCA) are only suitable for non-structural concrete application. This research however, shows that the recycled aggregates that are obtained from concrete specimen make good quality concrete. Concrete waste from demolished structure has been collected and coarse aggregate of different percentages is used for preparing fresh concrete. In this study, for the 7, 14, 28th days cube compressive strength using Ordinary Portland Cement (OPC) of grade 53 is used; for the strength of replacement for 30%, 60% and 100% RCA. The use of the construction and demolition waste in concrete a a replacement of the natural aggregate is recognized as a viable way to effectively utilize this waste. This study proves that, though the strength of concrete is affected by addition of recycled coarse aggregate with natural aggregate, thus providing environmentally friendly and economically viable solution as substitute for virgin aggregate as well as provide saving in the final cost of projects.