Analysis and Testing of Recycled Aggregate Concrete and Re-Use of RAC in New Constructing Structures

Abstract

As the population of the world is growing up with the passage of time, they also need more space shelter and construction. However the shortage or depletion of natural resources is a thread to the construction sector as it uses concrete so 60 to 75% aggregate present in it. In addition the building demolishing have negative impact on the environment and ecosystem as it produces a lot of waste. Now the world is moving toward sustainability so it drawn the attention of the construction sector toward reuse of recycled aggregates that present more than 70% of the concrete volume. The problem is that the recycled aggregate must fulfill the required quality and low cost before use in concrete. Considering these problem we conduct an experimental study on it. We conclude that the usage of recycled combination to update a part of the normal coarse combination results the tensile strength and compressive power with a value depends at the coarse mixture alternative percent and grading of coarse aggregate. At 25% coarse aggregate replacement percentage and well grading of course aggregate gives us satisfactory result.(Al-Azzawi 2006), (Belagraa and Beddar 2013),(Chandio, Memon et al. 2020).