Fatigue and Fracture Behavior Mechanism of Asphalt Based on Damage Tolerance Design Theory:Feature Discrimination,Mechanistic Criterion and Performance Prediction
A systematic study was conducted on the feature discrimination,mechanistic criterion and performance prediction of asphalt fatigue crack initiation and propagation,which was based on damage tolerance design theory and took asphalt fatigue and fracture behavior mechanism as the research object.The peak value of energy release rate was used as the failure criterion for materials,and a feature discrimination method for the initiation and propagation behavior of asphalt fatigue cracks was proposed.The mechanistic criteria for the crack initiation and propagation pha-ses were established by means of the damage mechanics and fracture mechanics,respectively.The prediction meth-ods for the crack initiation life and crack propagation life were also developed.The proposed analysis method helps to refine the understanding and characterization of the fatigue and fracture processes of asphalt.
road engineeringasphalt fatiguecrack initiationcrack propagationconstitutive model
万方数据
维普
