Published Paper Details:

This study examines the effect of using an "optimized triple mix" (OTM) on the properties of recycled asphalt pavement (RAP) aggregate concrete (RAPC) and "Abrasion and Attrition" (ABTRAP) aggregate concrete (ABTRAPC). The OTM approach involves coating the RAP aggregate with pozzolanic materials to reduce porosity and increase the C-S-H content, which improves the interfacial transition zone (ITZ). In both RAPC and ABTRAPC mixes, 10% of ordinary Portland cement (OPC) is replaced with silica fume. The laboratory tests showed that the OTM approach improved the compressive strength, flexural strength, and split tensile strength of RAPC and ABTRAPC mixes compared to the standard mix approach. The 50ABTRAPC mix prepared by the OTM approach exhibited better compressive strength, flexural strength, and split tensile strength than natural aggregate concrete (NAC). The cost analysis revealed that the 100ABTRAPC mix cost per 1 m3 of concrete was 9.793% less than NAC.