Rationality of Applying High-modulus Asphalt Concrete in Long-life Asphalt Pavement with Semi-rigid Base
杨光1, 王旭东2
1. Harbin Institute of Technology, Harbin Heilongjiang 150090, China; 2. Fundamental Research Innovation Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China
Rationality of Applying High-modulus Asphalt Concrete in Long-life Asphalt Pavement with Semi-rigid Base
YANG Guang1, WANG Xu-dong2
1. Harbin Institute of Technology, Harbin Heilongjiang 150090, China; 2. Fundamental Research Innovation Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China
摘要To construct a more durable long-life asphalt pavement with semi-rigid base, we combine different technical characteristics of long-life asphalt pavements reported at home and abroad. Different interlayer bonding conditions and moduli of the bottom sublayer are considered to analyze the mechanical-state differences among long-life asphalt pavements with semi-rigid base. The following two issues are discussed:fatigue failure in the surface layer and coordination between anti-rutting and anti-fatigue characteristics. Four-point bending fatigue tests are then used at various temperatures and loading modes to evaluate the anti-fatigue characteristics of high-modulus asphalt concretes. The index of accumulative dissipated energy is adopted to compare with materials in the upper sublayer. Analysis results indicate that the application of high-modulus asphalt concrete in long-life asphalt pavement with semi-rigid base can improve anti-rutting and anti-fatigue characteristics and has some rationality.
Abstract：To construct a more durable long-life asphalt pavement with semi-rigid base, we combine different technical characteristics of long-life asphalt pavements reported at home and abroad. Different interlayer bonding conditions and moduli of the bottom sublayer are considered to analyze the mechanical-state differences among long-life asphalt pavements with semi-rigid base. The following two issues are discussed:fatigue failure in the surface layer and coordination between anti-rutting and anti-fatigue characteristics. Four-point bending fatigue tests are then used at various temperatures and loading modes to evaluate the anti-fatigue characteristics of high-modulus asphalt concretes. The index of accumulative dissipated energy is adopted to compare with materials in the upper sublayer. Analysis results indicate that the application of high-modulus asphalt concrete in long-life asphalt pavement with semi-rigid base can improve anti-rutting and anti-fatigue characteristics and has some rationality.
杨光, 王旭东. Rationality of Applying High-modulus Asphalt Concrete in Long-life Asphalt Pavement with Semi-rigid Base[J]. Journal of Highway and Transportation Research and Development, 2020, 14(2): 16-24.
YANG Guang, WANG Xu-dong. Rationality of Applying High-modulus Asphalt Concrete in Long-life Asphalt Pavement with Semi-rigid Base. Journal of Highway and Transportation Research and Development, 2020, 14(2): 16-24.
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2020, Vol. 14 
