国产环氧沥青混合料在混凝土桥面中的应用研究

测试了国产环氧沥青混合料的水稳定性能、高温稳定性能、低温抗裂性能以及抗疲劳性能指标。在混凝土桥面铺装时，对国产多组分环氧沥青混合料高温、低温稳定性和水稳定性指标的检验，应在环氧沥青基本固化后进行，固化温度及固化时间采用120℃，12h（或125℃，4h）。混合料的各项技术指标控制为：车辙试验动稳定度DS≥25000次／mm（60℃），或DS≥15000次／mm（70℃）；浸水马歇尔残留稳定度≥85％；冻融劈裂残留强度比TSR≥85％；-10℃低温弯曲应变εB≥3．0×10^-3。

Application of Domestic Epoxy Asphalt Mixture in Concrete Bridge Deck

The water stability, high temperature stability, low temperature crack resistance and fatigue performance of domestic epoxy asphalt mixture are tested in this essay. In the concrete bridge deck pavement, the test of domestic epoxy asphalt mixture high and low temperature stability dynamic stability and water stability should be conducted when epoxy asphalt solidifies：the stetting temperature and time is 120 ℃ ,12 h（or 125 ℃ ,4 h）. The technical index of the mixture is：Rutting test dynamic stability DS 25,000 times/mm（ 60 ℃ ） or DS ≥ 15,000 times/mm （70 ℃）;Marshall immersion residual stability ≥85%; Freeze- thaw splitting residual strength ratio TSR 85%; -10 ℃ Low temperature bending strain ε8 ≥3.0×10^-3.