船闸的耐久性一直是水利水电领域研究的重要课题，而船闸闸墙混凝土受过往船只的碰撞、摩擦容易受到破坏，形成擦痕，这不仅极大地影响到了船闸的耐久性，并影响其美观。通过对国内外现有部分工程材料的技术资料和使用情况的调研，选择具有环氧树脂和聚氨酯分子链段结构的特殊树脂为基体，初步制备出了CKC系列新型防护修补材料，并在三峡工程五级永久船闸现场进行了生产性科学试验研究。由于CKC系列新型防护修补材料特殊的分子结构，使它既具有环氧树脂硬度高、粘结性强的特点，又具有聚氨酯的韧性和耐磨性的特点。通过2次半年期与一年期的检测，闸墙修补的CKC材料基本完好无损。

The durability of a lock concrete wall would have influence on the flood prevention and power generation of a hydrojunction. The concrete wall of a lock is always damaged by impacting of the through? ships, which leads to the reduction of durability. Therefore, how to protect the concrete wall to reduce damage is a very important problem in navigation project. By selecting special resins having an epoxy and polyurethane molecule structure as the base, the novel CKC-concrete protection impact material was prepared. For the special structure, the novel CKC-concrete has both epoxy and polyurethane performances of high hardness, and good cohesiveness and anti-wear capacity. By two times examination of half-year period and one-year period, the CKC-material repaired on the lock wall is basically perfect without damage.