Assessment the Performance of Cold Bituminous Emulsion Mixtures with Cement and Supplementary Cementitious Material for Binder Course Mixture

摘要

This study aims to develop a fast-curing cold asphalt concrete binder course (CACB) mixture by utilizing cement and waste aluminosilicate material (HASW) as supplementary cementitious material to make a new binary blended cement filler (BBCF) and use this new filler as a substitute for conventional mineral filler. With this purpose, cold asphalt concrete for binder course mixtures (CACB) with cationic emulsions were considered by means of indirect tensile stiffness modulus test while water susceptibility was evaluated by deterrnining the stiffness modulus ratio before and after the samples were conditioned. From the experimental data, it is observed that a significant improvement in the stiffness modulus and rut resistance with a substantial enhancement of water susceptibility resistance is achieved by using cement. Also, the addition of HASW to the CACB as a supplementary cementitious material leads to more improvement in the mechanical properties as well as water sensitivity, which indicates the possibility of the use of CABC in heavy road construction. This will remove the restriction imposed by road engineers on the utilize of CBEMs, namely the needs of such mixes for long curing time (generally spans from 2 months to 24 months). In addition, the new CACB is found to be equivalent with the traditional hot asphalt concrete binder course after short periods of curing.