橡胶颗粒沥青混合料路用性能室内试验研究

Laboratory experimental research on road performance of rubber particles asphalt mixture

为评价橡胶颗粒沥青混合料路用性能,采用室内试验的方法对橡胶颗粒掺量3%、采用不同活化及改性方式的橡胶颗粒沥青混合料进行路用性能分析.得到如下主要结论:TPS改性沥青加入后,混合料浸水残留稳定度及冻融劈裂强度比分别达到94%和90%,TPS可显著提高混合料的水稳定性,采用环烷油浸泡及TOR改性的方式可更大程度地提高混合料水稳定性;TPS可显著提高混合料的高温稳定性,随TPS掺量增加,混合料动稳定度逐渐提高,采用TOR复合改性和环烷油浸泡活化方式对混合料高温稳定性提高较小;不同的沥青改性方式和橡胶颗粒活化方式对其低温抗开裂性能影响甚微.

In order to evaluate road performance of rubber particles asphalt mixtre, road performance experiments of 3 % rubber particles asphalt mixture with different activations and modifications were taken by laboratory experiment. Some main conclusions are drawn as follows. After TPS modifier was pulled-in, residual stability MS and freeze-thaw splitting strength ratio TSR reached 94% and 90% respectively; TPS modifier can significantly improve the water stability of rubber particles asphalt mixture; naphthenic oil and TOR modifier can improve water stability to a higher degree. TPS modifier can significantly improve the high temperature stability; and with the increase of TPS modifier dosage, the high temperature stability of mixture can be improved accordingly. TOR and naphthenic oil improve the high temperature stability little. Different modifications and activation methods effect the low temperature cracking performance little.