Evaluation of the asphalt pavement at low temperature using asphalt thermal stress program

Though most of cracks contribute to the temperature stress of surface course itself, temperature shrinkage action of semi-rigid base course can not be ignored. So this article researches several aspects as followed: Summarize the control method commonly used at home and abroad now. In comparison, the stiffness modulus of asphalt concrete determined is also the key factor to ascertain the temperature stress. And then integrates, at last uses the weighted average method to calculate the whole temperature stress of surface course. At the same time, program and use simple interface. Compare with the results of TSRST and bending destroy test, temperature stress gained highly agree with them. On the other side, compare with the investigate data of the crack ratio of several roads in Hei Long-jiang Province, it also get very consistent result. So it illustrate that the temperature stress gained by the procedure is close to the reality.