论文部分内容阅读
为了降低橡胶沥青混合料过高的成型压实温度,同时使其具备良好的水稳定性,提出了掺入Sasobit有机温拌剂降低其压实温度及提高水稳定性的方法。该方法分别进行了130℃、140℃和150℃等3个压实温度以及1%、3%和5%等3个温拌剂剂量下的浸水马歇尔试验和冻融劈裂试验。试验结果显示,掺入Sasobit温拌剂后的橡胶沥青混合料可降低压实成型温度20～30℃,且各种试验条件下的马歇尔体积参数和水稳定性评价指标均满足密级配沥青混合料技术要求,压实温度140℃、3%温拌剂剂量组合条件下的综合抗水损害性能最优。
In order to reduce the high forming compaction temperature of rubber asphalt mixture and to make it have good water stability, a method of incorporating Sasobit organic temperature stabilizer to reduce compaction temperature and improve water stability is proposed. The method was subjected to Marsh water immersion test and freeze-thaw splitting test at three compaction temperatures of 130 ° C, 140 ° C and 150 ° C, and three warm doses of 1%, 3% and 5% respectively. The results show that the rubber asphalt mixture with Sasobit can reduce the compaction temperature 20 ~ 30 ℃, and the Marshall volume parameters and water stability under various test conditions all meet the requirements of dense graded asphalt mixture Technical requirements, compaction temperature 140 ℃, 3% temperature mixing agent dosage combinations under the conditions of the comprehensive water damage performance optimum.