Optimization of stress absorbing layer type in reconstruction of the city road

Improving the service life of pavement, preventing the generation of reflection crack and recycling resource are the research directions that many engineers worked. By the shear test, the drawing experiment of the combined specimen of stress absorbing layer, the performances of rubber asphalt stress absorbing layer, polyester Bolivia filament cloth stress absorbing layer, emulsified asphalt seal coat, hot-spraying asphalt tack coat and geogrid overlay are analyzed and compared respectively. From the aspect of resource recycling, the performances of rubber asphalt stress absorbing layer is better than that of the others.