Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7494199 | Resources, Conservation and Recycling | 2018 | 20 Pages |
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.
Keywords
C-S-HRPMU.S.ASTMRMCHClFHWAW/BBCACTEOPCITZsaturated surface dryMMARCPTUSGSASRNMARMABFBRAPRCAITMRecycled concrete aggregate (RCA)SCMSSDRapid chloride permeability testSemahydrochloric acidUnited StatesIndianaNormal concreteBenefit-Cost AnalysisReclaimed Asphalt PavementAmerican Society for Testing MaterialsAbsorptionrecycled concrete aggregateFly ashSilica fumeUnited States Geological Surveynatural aggregateOrdinary Portland CementCoefficient of Thermal ExpansionLos AngelesSupplementary cementitious materialRecycled aggregateSEMCompressive strengthinterfacial transition zoneScanning electron microscopyWater to binder ratioCalcium silicate hydrateCalcium hydroxideDHEalkali-silica reactionSpecific gravityUnited Kingdomrotation per minuteaciFreeze-thaw
Related Topics
Physical Sciences and Engineering
Energy
Renewable Energy, Sustainability and the Environment
Authors
Kho Pin Verian, Warda Ashraf, Yizheng Cao,