Evaluation Of Mechanical Properties And Water Absorption Replacing Natural Coarse Aggregate With Recycled Aggregate In Concrete

Abstract

The Indian construction sector is surge to be slated in resulting significant rise in gap with respect to construction materials such as aggregates (fine and coarse), cements and bricks etc. On the side, the huge number of unseasoned Construction and Demolition (C&D) waste posed consequent issue in one or the other place, especially in buildings like residential, institutional, industrial or commercial construction navel. Extensive research attempts to analyze and discuss the existing codification and challenges, and recommends an information structure for standardized collection, storage, treatment/processing, and disposal of C&D waste. The application of recycled aggregate (RA) , its limitations, and the best practices of utilizing these aggregate are important constituents of the proposed framework for processing mechanism, potential management in India. In the present paper it is discussed and focused on the prejudicial impact of recycled aggregate, ways to generate less wastes and its proper handling. Also the effects of recycled aggregate concrete on compressive strength and  split tensile strength by using recycled aggregate as a replacement of natural coarse aggregate (NCA). Percentages replacement used were 20%, 40%, 60%, 80% and 100% with 0% replacement was used as control. Mix design of 1:1.5:2 was used in the study with water to cement ratio of 0.45. Influence of RCA on compressive strength was determined for all the mixes as per IS 516:1959 standard. Results of compressive strength indicated that concrete with 40% replacement of NCA can be effectively used in structural concrete without incorporating much on strength. Also the water absorption test was conducted to assess the one of durability property of the concrete replaced with RA.