关键词: 灌浆材料, 水下修补, 高触变性

Abstract: In this paper, the development process, application principle and application examples of HK-963-J2 are introduced. HK-963-J2 is developed from traditional HK-963 underwater epoxy coating. The HK-963-J2 is of high thixotropy, long potting life, adjustable curing time, small linear shrinkage, low density, excellent underwater adhesion property, high mechanical strength underwater and in low temperature condition, etc. The combination of viscosity, density and thixotropy of system realizes the underwater "standing" effect. HK-963-J2 can be grouted by a screw mortar pump smoothly. When grouting is stopped, HK-963-J2 would stop flowing due to high thixotropy, which can be used for underwater fracture, pipe, steel lining void zone and other underwater defects. This provides a new solution for repair of underwater defects.

Key words: grouting material, underwater repair, high thixotropy