Enhancing the Properties of Recycled Aggregate Concrete Using Beneficiation Technique

The concrete industry is a huge industry that is growing at a faster rate and that leads to the consumption of a plenty of Natural Aggregates (NA) which puts the non-renewable natural resources in danger of extinction and the NA resources are remarkably waning day by day. On the other hand, millions of tons of construction and demolition waste residues are generated. Therefore, the use of recycled concrete aggregate obtained from construction and demolition waste in new concrete is a solution for effective waste utilization. Recently, effective uses of Recycled Concrete Aggregate (RCA) in the concrete industry have attracted a lot of attention resource preservations but the use of recycled coarse aggregate directly does not give the safe result in terms of durability properties and compressive strength. So, it has must improved the properties of RCA for replacing it with NA. To enhance the properties of RCA, adhered mortar has to be removed or strengthened. Removing and strengthening the adhered mortar are the two common methods for improving the properties of RCA. The process of removal of adhered mortar is carrying by chemically and mechanically processed. The current study aimed to evaluate the strength and durability properties of concrete at different replacement levels of natural aggregate and recycled coarse aggregate. This study was also intended to enhance the strength and durability properties of concrete by using chemically and mechanically beneficiated recycled aggregate and thus recommend the most appropriate replacement level and the beneficiation method.