Abstract

ABSTRACT Hydraulic road binders (HRBs) are specially designed materials for pavement stabilisation. The objective of this research was to investigate the properties of several laboratory-blended HRBs constituted of reduced cement clinker content and different types of Supplementary Cementitious Materials (SCMs). Formulated HRBs were characterised chemically and physically in the form of paste and mortar. Laboratory results showed a distinct reduction of hydration temperature and drying shrinkage in HRBs. In addition, HRBs had different contents of hydration products compared to Portland cement. Moreover, HRB mortars containing up to 50% of slag could have similar strength compared to GU and GUL at 28 curing days and onwards. It was also indicated that slag had superior strength development effect compared to the other two SCMs. Furthermore, a statistical prediction was conducted on compressive and flexural strength of HRB mixes. Finally, a framework of HRB optimisation was proposed.

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