An Experimental Investigation on Self Compacting Concrete by using Recycled Aggregate by using M40 Grade of Concrete

Abstract

Concrete is the second-most-used substance after water, and more than six billion tons of cement are produced each year. As part of the current investigation for new innovations in concrete as well as to decrease aggregate waste, an experimental assessment on self-compacting concrete with varied percentages of coarse recycled concrete aggregate was conducted. The major objective was to investigate the use and effects of coarse recycled aggregate in next generation concretes. The environment is under a great deal of stress as a result of the considerable increase in trash produced during construction and demolition over the past few years, together with the rise in demand for building materials. As a result, the use of recycled aggregate in concrete has been encouraged, which not only enables a more efficient use of natural resources throughout their life cycles but also contributes to environmental protection. This study employs coarse recycled aggregate (RCA) in varying percentage replacements of natural coarse aggregate (NCA) from 0% to 100% with increments of 20% for the production of self-compacting concrete (SCC) of grade 40. Super-plasticizer is applied in order to achieve SCC flow properties at a dose dependent on cement weight. At 28, 56, and 90 days old, testing for split tension and compressive strength were performed on the animals. It has been shown that up to 40% recycled aggregate may be used to create SCC without noticeably decreasing strength and durability.