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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 the road performance of asphalt rubber asphalt mixture, the road test of asphalt mixture with 3% rubber particles and rubber particles with different activation and modification methods was carried out by indoor test. The main conclusions are as follows: After the addition of the asphalts, the residual stability of the mixture and the freeze-thaw splitting strength ratio reached 94% and 90%, respectively. TPS can significantly improve the water stability of the mixture, which can be improved by naphthenic oil soaking and TOR modification Greatly improve the water stability of the mixture; TPS can significantly improve the high temperature stability of the mixture, with the increase of TPS content, the dynamic stability of the mixture gradually increased, the use of TOR composite modified and naphthenic oil immersion activation of the mixture The improvement of high temperature stability is small. Different asphalt modification methods and rubber particle activation methods have little effect on the low temperature cracking resistance.