温拌沥青混合料路用性能研究

Research on pavement performance of warm mix asphalt

采用马歇尔试验法对温拌沥青混合料组成进行设计,并通过车辙试验、浸水马歇尔试验、弯曲试验和疲劳试验,研究温拌沥青混合料的路用性能。结果表明：温拌改性剂掺量对沥青性能有显著影响,改性剂最佳掺量为2.5%~3.0%;温拌沥青混合料具有良好的高温稳定性、水稳定性、低温抗裂性和抗疲劳性,温拌改性剂能显著提高混合料的高温稳定性和抗疲劳性,但混合料水稳定性和低温抗裂性略有降低。

The composition of warm mix asphalt（WMA） was designed by the Marshall test,its pavement performance was evaluated based on results of rutting test,immersion Marshall test,bending test and fatigue test.The research result shows that： the content of modifier have great effects on the asphalt performance,and the optimum modifier content is 2.5%～3.0%;the high temperature stability,water stability,low-temperature crack resistance and fatigue property of WMA are excellent;and the high temperature stability and fatigue property of WMA are improved by the modifier,and the water stability and low-temperature crack resistance of WMA are decreased by the modifier appreciably.7 tabs,5 figs,15 refs.