Masayuki HASHIMOTO
Development of physical anti-icing pavements using asphalt rubber and surface processing rubber particles
Teruhiko MARUYAMA
The physical anti-icing pavements are commonly applied for pavements in snow area in Japan. Large waste tire rubber particles with top size 5mm incorporated into asphalt mixture is often used as the physical anti-icing pavements. This type of anti-icing material is useful to crush the ice building on road surface due to pavement deformation and it allows easy plowing. For fabricating the mixture, asphalt binder should be modified by polymers. It can prevent scattering of the rubber particles, but very expensive.
This research investigated the use of asphalt rubber (AR) and surface processing rubber particles as the physical anti-icing pavements. AR is an asphalt binder modified by waste tire rubber powder with top size 0.4mm. Surface processing rubber particles is coating of surface of rubber particles using stone powder to improve adhesiveness.
The aims of this research are to develop an environmental-friendly new physical anti-icing pavement, and to estimate rutting susceptibility, resistance to aggregate scattering in cold temperature, tensile strength in cold temperature and function of physical anti-icing for various asphalt mixtures with AR and surface processing rubber particles.
The results indicated that the asphalt mixture developed by AR and surface processing rubber particles showed good performance.
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