Abstract
Currently, researches on anti-cracking performance of asphalt concrete overlays on old concrete pavement for fatigue are still in the early stage of explorations and trials. The reflective crack simulation tests of bending and shearing styles with six asphalt overlays were carried out in order to evaluate the anti-cracking effects of different kinds of anti-cracking materials. It is suggested that Sampave modified asphalt mixture with independent development has excellent anti-cracking performance for fatigue, which provides an experimental reason for extending the anti-cracking technique in stress absorbing layers. Although anti-cracking performances of glass fiber grid and tricot geofabric reinforced composites are better, it is not as good as the one of Sampave. And the effect of paving asphalt concrete directly on old cement concrete pavement is worse.
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