橡胶粉改性沥青混合料罩面养护应用技术研究  

Application Technology Research on Overlay Maintenance of Rubber Modified Asphalt Mixture

作　　者：辛顺超[1] 杨静 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]云南省公路科学技术研究院,云南昆明650051

出　　处：《公路工程》2014年第6期266-270,293,共6页Highway Engineering

摘　　要：通过沥青和沥青混合料室内试验对比分析了基质沥青与橡胶粉改性沥青的性能,采用非常规试验研究了各种材料加铺罩面的应用效果与经济效益。结果表明:在橡胶粉掺量为10%时,相比基质沥青而言,改性沥青混合料的动稳定度提高2.73倍;残留稳定度增加11%;冻融劈裂强度比提升10.2%,在破坏荷载为3 k N时,可少铺筑厚度7.3 mm,在此情况下铺设长1 km,宽8.5 m的公路可节约资金9 322.8元。橡胶粉改性沥青混合料的应用可以延长路面使用寿命,提高经济效益。This article comparatively analyzed the performance of asphalt and rubber powder modi- fied asphalt through laboratory tests. Unconventional test was used to examine the application overlay effects and economic benefits of Different materials. The results showed that： In the rubber powder content of 10% , compared with asphalt, modified asphalt mixture dynamic stability increased 2.73 times; residual stability increased by 11 % ; freeze-thaw splitting strength ratio improved 10.2%. When at failure load of 3 kN, paving thickness can be less than the asphalt mixture 7.3 mm, in this case, if laying 1 km long, 8.5 m wide road can save 9 322.8 Yuan. The applications of rubber powder modified asphalt can extend the pavement life and improve economic efficiency.

关 键 词：橡胶粉 沥青混合料 罩面养护 路用性能 效益分析 

分 类 号：U416.217[交通运输工程—道路与铁道工程]