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Normalized fatigue properties of asphalt mixture at various temperatures

Journal of Road Engineering 2023年第3期3卷 279-287页

作者： Dongdong Ge Zihao Ju Defeng Duan Songtao Lyu Weiwei Lu Chaochao Liu Key Laboratory of Special Environment Road Engineering of Hunan Province Changsha University of Science and TechnologyChangsha 410114China National Engineering Research Center of Highway Maintenance Technology Changsha University of Science and TechnologyChangsha 410114China CCCC-SHB Fourth Engineering Co. Ltd.Luoyang 471000China

This study normalized the mixture's fatigue behavior at various temperatures,and the strength and fatigue tests of the mixture were *** stress state of the asphalt mixture includes direct tensile,uniaxial compression,and indirect *** desai yield surface and fatigue path were *** a normalized fatigue characteristics model of the mixture was *** following conclusions were *** the increases in the loading rate,the strength of the asphalt mixture *** the temperature increases,the strength of the mixture is *** various temperatures and rates,the strength forms a closed curved *** desai strength yield surface was established,which forms a closed curved *** the loading rate and temperature are below a certain critical line,the asphalt mixture will not undergo strength *** a fixed stress state,the fatigue damage path of the mixture was *** stress ratio was determined considering the influence of the loading *** this way,a normalized model can be described to express the asphalt mixture fatigue properties at various temperatures and stress *** the asphalt mixture in an indirect tensile state,the normalized fatigue equation parameter is *** model is more suitable for reflecting the viscous-elastic behavior of the mixtures than the fatigue equation determined by the notional stress ratio.

关键词： Asphalt mixture Normalization equation Load rates Test temperature Stress level desai yield surface

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