To improve the durability of tack coat applied to orthotropic steel bridge decks against freeze-thaw cycle in seasonally frozen regions, an epoxy asphalt (EA) tack coat modified by silane coupling agent surface-treated rubber particles (ARP) is proposed. In comparison with epoxy asphalt and epoxy asphalt rubber (EAR), the performance of ARP modified epoxy asphalt (EAAR) and EAAR tack coat were evaluated by conducting an experimental program in the laboratory. The properties of studied tack coat binders were first evaluated by viscosity, direct tensile and bending beam rheometer tests. Furthermore, the steel-asphalt interface performance including pull-off, shear and freeze-thaw damage resistance were evaluated as well. Results show that the incorporation of ARP can improve the mechanical properties and freeze-thaw damage resistance of EAAR, but it had shown a negative effect on the allowable construction time. When EAAR tack coat was used, the low temperature pull-off and shear strength can be improved to approximately 1.2 times that of EA tack coat, and the average interface fracture energy of the EAAR tack coat was about twice higher than EA tack coat. Moreover, EAAR tack coat had shown higher freeze-thaw damage resistance than EA tack coat, regardless of the higher nominal seepage pressure ratio, higher shear strength ratio and lower freeze-thaw damage ratio at the same freeze-thaw cycle periods. All the above findings indicate that the EAAR is of great potential to be applied as tack coat for seasonally frozen orthotropic steel bridge decks.

为了提高应用于正交各向异性钢桥面板的防潮涂层在季节性冰冻地区抵抗冻融循环的耐久性，提出了一种采用硅烷偶联剂表面处理过的橡胶颗粒（ARP）改性的环氧沥青（EA）防潮涂层。与环氧沥青和环氧沥青橡胶（EAR）相比，通过在实验室进行实验程序来评估ARP改性环氧沥青（EAAR）和EAAR胶粘层的性能。首先通过粘度，直接拉伸和弯曲束流变仪测试来评估所研究的粘性涂料粘合剂的性能。此外，还评估了钢-沥青界面性能，包括抗剥离，抗剪切和抗冻融性。结果表明，掺入ARP可以改善EAAR的力学性能和抗冻融性，但它对允许的施工时间产生了负面影响。当使用EAAR粘性涂料时，低温剥离强度和剪切强度可以提高到EA粘性涂料的1.2倍左右，并且EAAR粘性涂料的平均界面断裂能比EA粘性涂料高大约两倍。而且，在相同的冻融循环周期下，无论较高的标称渗透压力比，较高的剪切强度比和较低的冻融破坏率，EAAR粘性涂层均显示出比EA粘性涂层更高的抗冻融破坏性。以上所有发现表明，EAAR具有巨大的潜力，可以用作季节性冻结的正交异性钢桥面甲板的粘结层。低温剥离强度和剪切强度可以提高到EA粘性涂层的约1.2倍，并且EAAR粘性涂层的平均界面断裂能比EA粘性涂层高约两倍。此外，在相同的冻融循环周期下，无论较高的标称渗透压比，较高的剪切强度比和较低的冻融破坏率，EAAR粘性涂层均显示出比EA粘性涂层更高的抗冻融破坏性。所有上述发现表明，EAAR具有很大的潜力，可以用作季节性冻结的正交异性钢桥面甲板的粘结层。低温剥离强度和剪切强度可以提高到EA粘性涂层的约1.2倍，并且EAAR粘性涂层的平均界面断裂能比EA粘性涂层高约两倍。此外，在相同的冻融循环周期下，无论较高的标称渗透压比，较高的剪切强度比和较低的冻融破坏率，EAAR粘性涂层均显示出比EA粘性涂层更高的抗冻融破坏性。以上所有发现表明，EAAR具有巨大的潜力，可以用作季节性冻结的正交异性钢桥面甲板的粘结层。EAAR粘胶涂层显示出比EA粘胶涂层更高的抗冻融破坏性，而在相同的冻融循环周期中，无论是较高的标称渗透压比，较高的剪切强度比还是较低的冻融破坏率。以上所有发现表明，EAAR具有巨大的潜力，可以用作季节性冻结的正交异性钢桥面甲板的粘结层。EAAR粘胶涂层显示出比EA粘胶涂层更高的抗冻融破坏性，而在相同的冻融循环周期中，无论是较高的标称渗透压比，较高的剪切强度比还是较低的冻融破坏率。以上所有发现表明，EAAR具有巨大的潜力，可以用作季节性冻结的正交异性钢桥面甲板的粘结层。