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A Novel Cold Asphalt Concrete Mixture for Heavily Trafficked Binder Course

Authors: F. Ruddock, A. Dulaimi, H. Al Nageim, L. Seton

Abstract:

This study aims at developing a novel cold asphalt concrete binder course mixture by using Ordinary Portland Cement (OPC) as a replacement for conventional mineral filler (0%-100%) with new by-product material (LJMU-A2) used as a supplementary cementitious material. With this purpose, cold asphalt concrete binder course mixtures with cationic emulsions were studied by means of stiffness modulus whereas water sensitivity was assessed by measuring the stiffness modulus ratio before and after sample conditioning. The results indicate that a substantial enhancement in the stiffness modulus and a considerable improvement of water sensitivity resistance is achieved by adding LJMU-A2 to the cold asphalt mixtures as a supplementary cementitious material. Moreover, the addition of LJMU-A2 to those mixtures leads to a stiffness modulus after 2-day curing compared to that obtained with Portland cement, which occurs after 7-day curing.

Keywords: cement, cold mix asphalt, binder course, water sensitivity, stiffness modulus

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1107593

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References:


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