Properties of recycled concrete aggregate and their influence in new concrete production

By Kho P. Verian, Warda Ashraf, Yizheng Cao. Resources, Conservation and Recycling, 2018

597 citations recorded by the source corpus.

Abstract This manuscript presents a review of the potential and challenge of using recycled concrete aggregate (RCA) as the substitute for natural aggregate (NA) in concrete mixtures. Using RCA in concrete preserves the environment by reducing the need for opening new aggregate quarries and decreases the amount of construction waste that goes into landfill. The properties of RCA such as specific gravity, absorption, and the amount of contaminant present in it contribute to the strength and durability of concrete. The quality of RCA depends on the features of the original aggregate and the condition of the demolished concrete. Some researchers have reported that the use of RCA degrades concrete properties while others have successfully produced RCA concrete with a performance that matched normal concrete (NC). In addition to the influence of RCA to concrete properties, this paper also evaluates multiple techniques to improve the performance of RCA concrete, reported cost savings in concrete production and recommendations regarding the application of RCA in concrete.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/2fe0f88d68234f1ea5d64bbf47e30d95d205983d

Citations in the corpus

• Advanced progress in recycling municipal and construction solid wastes for manufacturing sustainable construction materials (2020, unknown): “Robayo et al. (2016) also indicated that the inclusion of 20 % OPC could yield WCB-based geopolymer pastes with the compressive strength of 102.6 MPa after 28-day ambient curing, which was twice the strength obtained in the mixture without OPC.”