Crack repair: the correct method

Cracks are common problems in buildings, which will not only weaken the integrity and rigidity of the structure, but also lead to the corrosion of steel bars and accelerate the carbonation of concrete. This paper will introduce three common repair methods to help you take correct measures in time to ensure the safety and stability of the building.

Surface repair method

Surface repair method is suitable for surface cracks or deep cracks that have no influence on the bearing capacity of the structure. Coating the surface with anti-corrosion materials such as cement slurry, epoxy mastic, paint and asphalt, and sticking glass fiber cloth can achieve the effect of restoration and protection.

Grouting and caulking sealing method

Grouting and caulking sealing methods are suitable for cracks that have an impact on structural integrity or have anti-seepage requirements. Cement slurry, epoxy resin, polyurethane and other cementing materials. Press it into the crack with pressure equipment, and form a whole with concrete after hardening, so as to achieve the purpose of plugging and strengthening.

Structural reinforcement method

Structural reinforcement method is suitable for the situation that cracks affect the structural performance. This includes increasing the cross-sectional area of concrete structure, wrapping steel bars at corners, prestressed reinforcement, sticking steel plates, adding fulcrum reinforcement and shotcrete reinforcement.