关键词: 啃边破损, 崩角破损, 挤压破损, 冲坑修补, 船闸修补

Abstract: As impact of external force on concrete, local crushing damage are easily caused. At the same time, the microstructure of concrete is of multi whisker, and the pore structure is prone to absorb moisture and susceptible to freeze-thaw damage. For hydraulic structures, the common phenomenon contains scrape of lock side wall, spillway cavitation, panel extrusion failure, edge extrusion of structural joint, freeze-thaw and etc. The repair of some damaged parts, due to small amount of work and cumbersome maintenance steps, is usually postponed temporarily. Once the steel exposed and corrosion happened, maintenance is very urgent. Aiming at the problems above, a template free repair system is developed, which is of quick maintenance, crack resistance, impact resistance, strong adhesion and low modulus. This system has greatly simplified the maintenance process and enhanced the repair effect.

Key words: edge extrusion of structural joint, corner damage, extrusion damage, pit repair, lock repair