Fatigue Performance Improvement of Semi-flexible Pavement Materials Based on Interfacial Toughening
Semi-flexible pavement material is a kind of composite material formed by pouring high flow cement-based slurry into large void asphalt mixture.The weak interface formed by rigid cement slurry and flexible asphalt mortar leads to fatigue cracking of semi-flexible pavement.Therefore,to improve the fatigue performance of semi-flexible pavement materials,the interfacial strengthening modifier MA-100 was used to improve the cement-asphalt interfacial bonding effect inside semi-flexible pavement materials,and the fatigue life of semi-flexible pavement materials was evaluated by four-point bending fatigue test under strain control mode.The results show that the interface strengthening modifier MA-100 can greatly improve the fatigue performance of semi-flexible pavement materials to more than 1 million times.The fatigue life of semi-flexible pavement materials has low sensitivity to strain level.Semi-flexible pavement material can be used as a kind of pavement material with high modulus and fatigue resistance.
semi-flexible pavementinterfacial tougheningfatiguestrain control
万方数据
维普
