Effects of asphalt pavement texture on hydroplaning threshold speed
Mohammad Hosein Dehnad , Ali Khodaii
Journal of Central South University ›› 2019, Vol. 26 ›› Issue (1) : 256 -264.
Effects of asphalt pavement texture on hydroplaning threshold speed
Hydroplaning speed can be affected by pavement texture depth, thickness of water film, tire pressure and tread depth. In this study, to understand the influence of pavement texture on the hydroplaning speed, a new lab-scale apparatus has been designed and manufactured. The lack of proportion between linear movement of vehicle shaft and the wheel rotation was found to be a good index to determine hydroplaning threshold. A 5% drop in the ratio of wheel-to-axle rotation has been assumed as an index to determine hydroplaning threshold. Based on the measures, a simplified model was developed that is able to predict the hydroplaning speed depending on pavement’s texture characteristics. The results indicated that a 77% increase in mean texture depth cause 9% increase in hydroplaning threshold speed.
asphalt pavement / hydroplaning / surface texture / hydroplaning test machine
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