Abstract
The aim of this research is to investigate moisture susceptibility, rutting resistance and structural response of rubberised asphalt mixtures containing Warm Mix Asphalt (WMA) additives using Tensile Strength Ratio, dynamic creep test, wheel tracking and indirect resilient modulus. Furthermore, impact of WMA additives on compaction was evaluated by air void content of Marshall specimens. Two types of waxes, namely Sasobit and Rheofalt, and an anti-stripping additive, namely Zycotherm, were used to reduce mixing temperature of rubberised mixtures at concentrations of 0, 5, 10 and 15%. It was proved that not only does small amount of the anti-stripper (0.1%) decrease the production temperature effectively, but it also results in the most moisture damages resistance improvement compared to the waxes. Rheofalt, on the other hand, has the most effectiveness in improvement of rutting resistance and resilient modulus. Finally, Sasobit was found the most effective WMA additive regarding compaction effort efficiency.
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