环氧沥青混合料强度的时温依赖性

分析了环氧沥青化学反应机理及强度增长特征，并根据固化进程中环氧沥青体系黏度增长规律，建立其强度的时温模型，进而研究了促进剂的含量对强度增长的影响。依据等温养生试验，解析强度方程参数，并采用强度方程对自然养生的强度进行预测。结果表明：理论预测强度和实际强度较为吻合；混合料强度增长主要与结合料体系的黏度增长有关；该方法可用于实体铺筑环氧沥青混合料的强度预测，并确定实际养生期限以及开放交通的时间。

Dependency of Time-temperature of Epoxy Asphalt Mixture Strength

Authors analyzed chemical reaction mechanism of epoxy asphalt and increasing characterization of strength. Based on increasing rules of viscosity of epoxy asphalt system in solidification process, time-temperature model of strength was conducted and influence of content of additive on strength increasing was analyzed. Based on equivalent temperature cure experiment, strength equation parameters were soluted and strength of natural cure was predicted by using strength equation. Results show that theoretical prediction agrees well with practice on epoxy asphalt mixture strength; increase of viscosity of combined material system results in change of increasing of mixture strength; the method can be used to predict strength of epoxy asphalt mixtures paved on bridge deck in practice and determine practical cure period and opening traffic time.