论文部分内容阅读
橡胶沥青混合料其较高的沥青用量往往会导致产生较多的路表车辙(影响其抗车辙性能),但直接降低沥青用量会导致混合料空隙率增大严重影响混合料的疲劳性能和水稳定性,本次研究通过将混合料中添加UBM降黏剂来达到降低混合料的沥青用量并能保证足够的空隙率,室内试验和广深高速公路主线沥青混凝土路面车辙处理工程橡胶沥青试验段的施工质量检测显示,沥青用量降至6.5%,空隙率维持在5.0%,车辙试验平均值为4 515次/mm,施工性能得到了提高,并且压实度和渗水系数亦都达标,沥青用量的降低也使得工程造价得到一定降低。并根据此种特殊处理对施工工艺进行了详细阐述。
The higher asphalt content of rubber asphalt mixture often leads to more road surface rutting (affecting its rutting resistance), but directly reducing the asphalt content will lead to the increase of the voidage of the mixture seriously affecting the fatigue properties of the mixture and water Stability, this study by adding UBM viscosity reducer to the mixture to reduce the amount of asphalt mixture and to ensure adequate porosity, indoor tests and main line of Guangzhou-Shenzhen Expressway asphalt concrete pavement rutting test rubber asphalt section The construction quality inspection showed that the asphalt content decreased to 6.5%, the porosity maintained at 5.0%, the mean value of rutting test was 4 515 times / mm, the construction performance was improved, and the compaction degree and seepage coefficient also reached the standard. The asphalt dosage The reduction also makes the project cost has been reduced. According to this kind of special treatment, the construction technology is elaborated.