环氧沥青混凝土性能试验研究

Study on the Performance of Epoxy Asphalt Concrete

为正确认识环氧沥青混凝土用于钢桥面沥青铺装结构层的性能改善作用,通过室内试验评价了环氧沥青混凝土的高低温、抗水损害以及耐腐蚀性能。结果显示:(1)环氧沥青混凝土高温性能优势很明显,其60℃动稳定度明显高于SMA-10与SBS改性沥青混合料,60 min累计变形量则明显小于SMA-10与SBS改性沥青混合料;(2)环氧沥青混凝土具有优异的抗低温开裂性能,其抗弯拉强度几乎是SBS改性沥青混合料和SMA-10混合料的3倍,并且其最大弯拉应变也大于SBS改性沥青和SMA-10混合料;(3)环氧沥青混凝土试件经柴油和煤油浸泡前后,试件表面颜色并未发生明显变化,沥青膜并未没明显稀释和溶解,具有较强的耐腐蚀性能。

the steel bridge ance to water In order to correctly understanding the performance of epoxy asphalt concrete that be used as deck asphalt pavement structure layer, the high and low temperature performance, the resistdamage The results show ： （ 1 and the corrosion performance of epoxy asphalt concrete are evaluated by indoor testing. ） the high temperature performance of epoxy asphalt concrete is better obviously. Its dynamic stability in 60 ℃ is significantly better than SMA - 10 and the SBS modified asphalt mixture, and its 60min accumulative deformation is much smaller, （2） the epoxy asphalt concrete has excellent low tempera- ture cracking resistance. The flexural tensile strength is almost 3 times stronger than the SBS modified asphalt mixture and SMA - 10, and its maximum bending strain is greater, （3） before and after soaking by diesel and kerosene, the surface color in specimens of the epoxy asphalt concrete do not change obviously, and its bitumen membrane do not diluted or dissolved, the epoxy asphalt concrete has stronger corrosion.