Effect of Waste Rubber Powder on Fatigue Performance of Cement Stabilized Gravel
In order to eliminate fatigue crack,the fatigue performance of cement stabilized gravel with different waste rubber powder content was studied by three-point loading method.Fatigue mechanism of cement stabilized gravel with waste rubber powder was characterized by three-point bending beam method.The results show that fatigue lives of cement stabilized gravels with rubber powder content of 10,20 kg/m3 are better than that of reference cement stabilized gravel.Cracking toughnesses of cement stabilized gravels with rubber powder content of 10,20 kg/m3 are 1.49,2.58 times that of reference respectively.And instability toughnesses of cement stabilized gravels with rubber powder content of 10,20 kg/m3 are 1.30,2.21 times that of reference.So fatigue resistances of cement stabilized gravels with rubber powder content of 10,20 kg/m3 are remarkable because that its fracture energy is large.Fatigue performance of cement stabilized gravel with rubber powder content of 30 kg/m3 does not increase because that its bending tensile strength is low with increasing rubber powder content.
cement stabilized gravelwaste rubber powderfatigue lifefatigue equationfracture toughnessfracture energy
NETL
NSTL
万方数据
维普
