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为了研究不同温拌剂对沥青及其混合料性能的影响,选择市场上的4种温拌剂掺加到70#基质沥青中,检测沥青的各项性能指标;进行沥青混合料马歇尔试验,比较掺加温拌剂125℃击实与原样沥青混合料150℃击实的马歇尔空隙率,并分析评价不同类型温拌剂对沥青混合料路用性能的影响。结果表明:表面活性剂类温拌剂的抗老化性能优于有机降粘类温拌剂;表面活性剂类较有机降粘类温拌剂的降温能力更强,有利于保障混合料的空隙率和压实度;表面活性剂类温拌剂对沥青及其混合料的各项性能无明显影响,而有机降粘类温拌剂能够一定程度改善沥青及其混合料的高温性能,但对水稳性能和低温性能不利。
In order to study the effect of different warm mix agent on the properties of asphalt and its mixture, 4 kinds of warm mix agent on the market were selected and blended into 70 # asphalt, and the performance indexes of asphalt were tested. The asphalt mixture Marshall test The effect of different types of warm mix agent on the road performance of asphalt mixture was analyzed and evaluated with 125 ℃ compaction of warm mix agent and the compaction Marshall porosity at 150 ℃ of the original asphalt mixture. The results showed that the anti-aging properties of the surfactant-based warm mix agent were better than that of the organic viscosity-reducing warm mix agent. The surfactant had better cooling ability than the organic viscosity-reducing warm mix agent, which was conducive to the protection of the voidage And the degree of compaction; surfactant warm mix agent on the asphalt and its mixture has no significant effect on the performance of the organic viscosity-reducing type of warm mix agent can improve the asphalt and its mixture to some extent, high temperature performance, but the water Stable performance and low temperature performance adversely.