渗透型涂层在高桩码头上部结构上的应用研究

依托某高桩码头工程,采用毛细吸水率、氯离子电通量、氯离子扩散深度3个指标,对码头上部结构实施渗透型涂层的效果进行取样检测和评价。结果表明:涂刷渗透型硅烷后,芯样的毛细吸水率降低90%以上;氯离子电通量处于极低甚至可忽略水平;氯离子扩散深度降低60%以上。因此,采用渗透性涂层后码头上部结构构件的耐久性能得到显著提升。||Permeable coating is one of the ideal coatings to improve the concrete durability in view of balancing concrete’s  breathing  ability and the effect of water-proof. Three indicators of capillary absorptivity,chloride ion flux and chloride diffusion depth were used to test and estimate the effect of the permeable coating of a high-pile wharf,on the upper structures of which the permeable coating was applied. Results show that after the permeable coating is applied on the upper structures, the capillary absorptivity of the specimens is decreased by90%,chloride ion flux is reduced to a level that is extremely low and could be even ignored,and chloride diffusion depth is decreased by over 60%. Therefore,a conclusion can be drawn that the permeable coating can enhance the durability of upper structures of high-pile wharves significantly.