Experimental investigation on skid resistance of asphalt pavement under various slippery conditions

Abstract

AbstractThe skid resistant performance of slippery pavement is one of the most important pavement surface characteristics, as it is associated with both pavement serviceability and traffic safety. Through simulating different pavement conditions in the freezing laboratory, skid resistance of asphalt pavement under various slippery conditions is measured with pendulum friction coefficient tester. Then, the effects of pavement temperature on skid resistance of dry, wet, icing and snowy pavements are quantitatively analysed. Furthermore, factors exerting effects on test results are taken into account, such as thicknesses of ice and water film on pavement. Through quantitative analysis, empirical evaluation model of pavement friction coefficient (PFC) under different conditions is established. To facilitate practical engineering application, reference standard values of PFC are recommended. Finally, the PFC is classified into seven levels, which illustrates the corresponding relationships of friction rank, skid resistance assessment, PFC range and pavement conditions.Keywords: Icing pavementskid resistancetraffic safetyfriction coefficienttexture depth Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThis research has been supported by the National Natural Science Foundation [grant number 51248006], [grant number 51308554], the China Postdoctoral Science Foundation [grant number 2012M521563] and the Guizhou Transportation Science and Technology Foundation [grant number 2013-121-013] to the first writer. The research is also assisted by the Special Financial Grant from the China Postdoctoral Science Foundation [grant number 2013T60865], the Guizhou Science and Technology Department Foundation [grant number 20132167].