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Sasobit既是一种沥青改性剂又是一种温拌沥青混合料添加剂。在室内,对掺Sasobit添加剂的改性沥青与温拌沥青混合料的路用性能进行了试验研究。结果显示:掺入适量的Sasobit后,沥青胶结料的高温性能、感温性能和低温性能均得到明显的改善;Sasobit温拌沥青混合料的拌和与压实温度比普通热拌沥青混合料降低30℃时,具有与普通热拌沥青混合料相同甚至更好的路用性能,具有明显的经济和社会效益;拌和与压实温度的降低,混合料发生水损害的可能性会增加,建议采用添加抗剥落剂的方法来改善掺Sasobit的温拌沥青混合料的水稳定性。
Sasobit is both a bitumen modifier and a warm mix asphalt additive. In the interior, the road performance of modified asphalt blended with Sasobit additive and warm mix asphalt was tested. The results showed that the high temperature performance, the temperature sensitive property and the low temperature performance of the asphalt binder were obviously improved after the proper amount of Sasobit was added. The mixing and compaction temperature of the Sasobit warm mix asphalt was higher than that of the ordinary hot mix asphalt When the temperature is lower than 30 ℃, it has the same or even better road performance as the ordinary hot mix asphalt mixture, which has obvious economic and social benefits. The lower the mixing and compaction temperature, the more likely the water damage to the mixture will be. Addition of anti-stripping agent to improve the stability of Sasob admixture mixed with warm asphalt mixture.