混凝土裂缝处理（Concrete crack treatment）.doc

混凝土裂缝处理（Concrete crack treatment） Treatment of cracks in concrete, refers to adopt scientific methods to repair technology of concrete cracks. Concrete cracks generally has three states: static crack, active crack, cracks are developed. Concrete crack treatment methods of general factors to consider: judge the crack is active or inactive; what is the main purpose of repair? Is to reduce excessive leakage, cracks in the completely water; whether you need reinforcement; what is the main cause of cracks; crack changes in future (magnitude and direction) to. The 13 common methods of crack treatment: 1. resin infusion method; 2. sealing surface; 3. drilling impaction; 4. flexible sealing surface; 5. additional reinforcement method; 6. grouting method; 7. dry filling method; 8. screw method; 9. polymer immersion method (gravity infiltration and vacuum infiltration); 10. Diego surface layer and surface treatment method etc.. The basic principle, main points of common concrete crack treatment: 1. epoxy resin infusion method is the most common cracks in pouring material. It has high mechanical strength, most of the chemical erosion and resistance of concrete when the resin can be filled into the cracks of 0.05 mm. In addition to some special epoxy resin, when the crack is active, there is leakage, not dry or very much quantity through the cracks, it is usually not easy to use resin infusion method. Beijing Yejian engineering crack treatment center developed with international leading level Engineer Automatic low-pressure grouting technology is one of the best method of resin infusion method. 2. polymer immersion method 2 Crack liquid resin.1 gravity infiltration method of low viscosity can be used to seal the pavement and bridge deck of not less than 0.1 mm. The resin is coated onto the surface, or on a horizontal surface along the crack to build temporary cofferdam, the resin overflow on the crack surface. 2.2 vacuum infiltration method is more suitable for closed multiple