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鉴于聚合物改性沥青可以明显改善沥青混凝土路面的低温和高温性能,延长道路使用寿命,因此聚合物改性沥青已经成为全球沥青路面的首选。本次高速公路项目的路面上面层组成配合比设计就添加和利用了石灰岩集料和SBS改性沥青(基质沥青为韩国SK重交沥青AH-70)来进行配合比筛选和设计,并得出最佳沥青用量和沥青混凝土密度,总结SBS改性沥青混凝土相比于普通沥青混凝土具有更好性能。
Polymer modified bitumen has become the first choice of global asphalt pavement due to the fact that polymer modified bitumen can obviously improve the low temperature and high temperature performance of asphalt pavement and prolong the service life of the road. This highway project pavement design and composition of the top layer on the addition and utilization of limestone aggregate and SBS modified asphalt (asphalt matrix for South Korea SK heavy cross asphalt AH-70) to carry out screening and design of the mix, and draw Optimum asphalt content and asphalt concrete density, Summary SBS modified asphalt concrete has better performance than ordinary asphalt concrete.