Analysis on Four Treatment Methods of commercial concrete mixing plant Concrete Crack Leakage


First, the chemical paddle method

Chemical grouting plugging, is generally more serious parts of the water leakage, their cracks are generally through the plug in the treatment is more difficult to penetrate, leakage, for this need to take chemical grouting approach to plugging , Plugging, the first infiltration, leakage of cracks to determine the location of the study, and then determine the plugging program, the kind of crack leakage treatment methods are as follows:

1, in the leak at the cut out of a "V" -type slot, with quick settling agent cement slurry buried grouting mouth, with polymer cement mortar PCCM seal.

2, the concrete base layer with a wire brush to clean up the floating ash, and rinse with water.

3, in the concrete base surface without water, spray 5mm thick polymer cement mortar.

4, the sprayed polymer for 5 days, with water-soluble polyurethane slurry for chemical grouting, grouting pressure is generally 0.3 (MPa), to prevent the pressure in the grouting is too large, resulting in the burst into the plastic pipe.

In the actual plugging treatment, the purpose of using linoleum or aluminum foil is to prevent the cement slurry from entering the metal valve (one end of the metal valve is connected with a transparent plastic grouting hose as a water diversion pipe, and after the concrete surface reaches a certain strength, Of the feed pipe) of the grouting hole. Cover the metal valve with linoleum or foil and seal it with a quick-setting cement paste around the linoleum or aluminum foil and then use the polymer cement mortar for surface treatment.

Second, caulking plugging method

The use of the plugging method, usually commercial concrete mixing plant concrete surface only appeared in the phenomenon of water, in a long time, the concrete wall can be wet into large tracts of water and underground water, if not dealt with, will affect The whole surface of the beautiful and indoor use effect, to this end, the approach of the seepage should be used to deal with the method of caulking, caulking of the treatment is:
1, along the concrete seepage of the gap cut out "v" slot, remove the debris within the tank, and then rinse with water.

2, in the clean, dry seam surface evenly coated plastic water sealing material for the base liquid.

3, in the base liquid before the dry, embedded plastic sealing material.

4, in the sealant in the surface before drying, with a small scraper and other tools smooth, the surface repair flat.

5, after the caudal suture with a kettle to withdraw the water, to keep the damp face.

6, will be prepared in proportion to the polymer cement mortar with a scraper to be embedded in the seam, and with a spatula to smooth it.

7, to be polymer cement mortar condensation, the use of wet way to maintain 3 to 5 days.

8, in proportion to the preparation of thickening epoxy paint, repeated mixing after use.

9, in the dry, flat seam surface, evenly brushing the elastic paint two, to a brush pressure brush operation, to prevent leakage brush.

10, in the entire plugging work is completed, the use of paint on the tools, in a timely manner with a solvent cleaning clean standby.

Third, plugging plugging method

The kind of plugging method is mainly used in the underwater or underground concrete in the gushing of the conditions of the pores, holes and cracks in the rapid closure. In the blocking of such parts of the leak, often than the other infiltration, leakage is much more difficult, and the water blocking effect to slightly worse, but as long as the required operation in the treatment, to ensure that the concrete surface is not seepage.

The use of this approach plugging the substrate must first clean, in the concrete surface shall not leave concrete debris and powder, if the point of gushing water, the first leak at the chisel a diameter of 80 ~ 150mm deep 50 ~ 80mm work pit, in the pit In the water leakage place a preconducting pipe, as the use of drainage, to be cast first to the polymer concrete (or mortar) to a certain strength, and then forced to block the polymer mortar. In dealing with the infiltration, the general water flow according to the size of the water to take a different plugging method, if there is water outwards, can take the above method. If the leakage is very small, you can leak in the way according to the above method first chisel in addition to a plugging work pit, rinse with water, immediately with polymer concrete or polymer mortar a block, and forced the polymer concrete or polymer Mortar compaction, until the concrete or mortar condensation hardening, in its surface with high-grade mortar smoothing, in 5 days to keep the surface wet.

Note: In the gushing of the plugging process, must be on the steel pipe or bamboo concrete or mortar in the hardening (condensation) before the rotation to prevent the commercial concrete mixing plant concrete or mortar can not be removed after hardening, resulting in the last blocked flow difficulties Or rework phenomenon. In addition, if the leakage of water is up and down cracks, in the blocking of this form of cracks, we should pay attention to the operation from top to bottom, at a relatively easy to operate the height of the drainage pipe, the entire crack to block the material to meet the design requirements, and then The location of the drainage to block.

Fourth, the coating plugging method

Coating plugging is the surface of the concrete structure where the leakage has been treated directly on its surface for waterproofing. This method is generally applicable to the concrete structure in the construction of vibration is not dense, and some leakage of concrete formed by the internal non-dense caused by a large area of water seepage, the phenomenon of water seepage is generally unable to use pressure grouting and embedded method to solve, only Surface coating with coating method. This treatment is relatively simple, but in the operation requires more stringent, generally require the concrete structure surface without floating ash and debris, otherwise it will affect the concrete surface and coating adhesion, affecting the waterproof effect.

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