Applicability Research of Hard Asphalt on Top Layer of Pavements in High Temperature and Rainy Regions
In order to enhance the road performance and service life of asphalt pavements in high temperature and rainy regions,this paper researched the applicability of hard asphalt for wearing course of pavements.In this study,70#base asphalt was used as a control to explore the difference of rheological properties between 70#and the hard asphalt of 30#,50#.The AC-13 gradation was used to prepare asphalt mixtures.Their rutting resistance and water damage re-sistance were analyzed.The results indicated that the rutting factor of hard asphalt and the dynamic and residual stabili-ties of asphalt mixtures containing hard asphalt were better than the ones of 70#base asphalt,among which 30#as-phalt had the highest rutting factor,showing the best high temperature stability and water stability.
hard asphaltasphalt mixturesrheological propertieshigh temperature stabilitywater stability
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