Fan Chuanbin, Chen Huanyong, Lin Feng, Li Weixiong, Xiong Xuetang, Chen Bo, Yu Huayang
Shenzhen-Zhongshan Link Administration Center, Guangzhou 510000, China.
Guangdong Guanyue Highway & Bridge Co., Ltd., Guangzhou 511450, China.
Polymers (Basel). 2025 Apr 9;17(8):1018. doi: 10.3390/polym17081018.
The bonding performance of epoxy resin adhesives plays a critical role in ensuring interlayer adhesion and long-term durability in steel bridge deck pavements. However, the construction environment temperature and curing time significantly influence the bonding properties of epoxy resin adhesives. To address this issue, systematic evaluations of the bonding performance and tack-free time of epoxy resin adhesives were conducted. The results demonstrate that under identical curing durations, the tensile bond strength between the epoxy resin bonding layer and steel plate increases with higher curing temperatures. Similarly, at constant curing temperatures, extended curing times lead to improved tensile strength. Both higher temperatures and longer curing durations reduce the tack-free time of the epoxy resin adhesive. Under natural outdoor curing conditions, the epoxy resin adhesive achieves design requirements for both tensile strength and tack-free time after 48 h of curing, ensuring optimal interlayer bonding and workability. Conversely, prolonged curing beyond 72 h results in significantly reduced bonding strength while maintaining acceptable tack-free time. For ambient temperature conditions, the optimal curing duration for epoxy resin adhesive is determined to be 48~72 h, balancing both bonding performance and construction requirements (preventing adhesion to construction equipment). This research offers technical guidance for the field construction of epoxy pavement on steel bridge decks by establishing optimal curing protocols for epoxy resin adhesives to ensure reliable bonding performance and construction workability.
环氧树脂胶粘剂的粘结性能对于确保钢桥面板铺装中的层间粘结和长期耐久性起着关键作用。然而，施工环境温度和固化时间会显著影响环氧树脂胶粘剂的粘结性能。为解决这一问题，对环氧树脂胶粘剂的粘结性能和表干时间进行了系统评估。结果表明，在相同的固化时长下，环氧树脂粘结层与钢板之间的拉伸粘结强度随固化温度升高而增加。同样，在恒定的固化温度下，延长固化时间会提高拉伸强度。较高的温度和较长的固化时长都会缩短环氧树脂胶粘剂的表干时间。在自然户外固化条件下，环氧树脂胶粘剂在固化48小时后达到了拉伸强度和表干时间的设计要求，确保了最佳的层间粘结和施工性能。相反，固化超过72小时会导致粘结强度显著降低，同时保持可接受的表干时间。对于环境温度条件，确定环氧树脂胶粘剂的最佳固化时长为48至72小时，以平衡粘结性能和施工要求（防止粘结到施工设备上）。本研究通过建立环氧树脂胶粘剂的最佳固化方案，为钢桥面板环氧铺装的现场施工提供了技术指导，以确保可靠的粘结性能和施工可操作性。
