Abstract

In order to study the influence of asphalt treated base (ATB) on pavement performance, a multi-layer elastic theory program is utilized to calculate the stress and strain in different pavement structures. Based on an instant heat conducting hypothesis, a finite element model is established to calculate the temperature stress and the strain of pavement structure when temperature reduces. Then the stress and strain of all the structural layers are calculated considering the corporate effect of loading and temperature. It is found that the stress caused by quickly-lowered temperate is far more lager than that caused by load. Thus it is revealed that the cracking in pavement is mainly caused by the temperature. Through contrast it is proved that the stress and strain caused by load and temperature of pavement with ATB30 are less than those of semi-rigid pavement. So ATB is proved to be an efficient way to decrease crack in asphalt pavement based on above calculation and theory analysis.

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