1. Surface repair
The commonly used methods are compacting and smoothing, applying epoxy binder, spraying cement mortar or fine stone concrete, pressing epoxy cement, epoxy resin pasting silk cloth, increasing the overall surface layer, steel anchor bolt stitching, etc.
Surface daub and surface patching method surface daub application scope is slurry material difficult to fill into the fine and shallow cracks, the depth has not reached the steel bar surface hair cracks, watertight joints, not telescopic cracks and no longer active cracks. Surface repair (geomembrane or other waterproof piece) method is applicable to a large area of water leakage (honeycomb hemp surface, etc., or not easy to determine the specific location of water leakage, deformation joint) seepage plugging.
2. Local repair method
The commonly used methods include filling method, prestressing method, partial chiseling and repouring concrete, etc.
With repair material directly fill cracks, generally used to repair wider cracks, simple operation, low cost. The width is less than 0.3mm, the depth of the shallow crack, or the crack has filling material, with grouting method is difficult to achieve the effect of the crack, and the simple treatment of small cracks can be taken to open V-shaped slot, and then fill treatment.
