News Abstract: because the underground is relatively humid, it leads to the loosening of concrete, resulting in cracks and pores, resulting in leakage. The correct choice of construction technology can quickly solve the problem of leakage, but also can ensure the quality of engineering construction and avoid leakage again.
Because the underground is relatively humid, it leads to the loosening of concrete, resulting in cracks and pores, resulting in leakage. The correct choice of construction technology can quickly solve the problem of leakage, but also can ensure the quality of engineering construction and avoid leakage again. Before construction, it is necessary to find out the leakage point, clean up the surface of the leakage point, and chisel the groove with steel drill. The groove width is 60-100 mm, and the groove depth is 70-100 mm. It is concave (large inside and small outside), and the specific situation depends on the site.
Before the basement waterproof construction, corresponding waterproof materials should be prepared in advance. The main waterproof materials are: polyurethane waterproof coating, polyester fiber non-woven fabric, polystyrene foam board, etc., and to ensure that the content, strength, flexibility and impermeability of these main waterproof materials meet the construction requirements. In addition to these main materials for waterproof construction, complete auxiliary materials should be prepared. For example, xylene (diluent and machine cleaning agent), dibutyltin dilaurate (coagulant) and benzenesulfonyl chloride (retarder), etc. the main construction equipment includes electric mixer, mixing bucket, paint brush, spring scale and fire fighting equipment.
After the materials and tools are prepared and the base course of waterproof construction is cleaned up, the construction of waterproof layer begins. Here, the editor reminds you that since the waterproof construction of basement is negative pressure construction, it is difficult to construct, so we should find professional and experienced professional construction personnel for construction.
1. The waterproof layer of the base course is formed by the waterproof membrane. Therefore, when the waterproof construction is carried out, the coating shall be prepared according to the design requirements of the basement. If the waterproof design of the basement has no specific provisions on the coating allocation, it needs to be carried out according to the general mixing proportion.
2. The specific operation steps of waterproof layer construction are as follows: the prepared mixed coating is evenly applied on the base with scraper or roller brush, which generally needs 3-4 times. As the qualified standard of waterproof layer coating is not less than 2mm, there are strict regulations on the amount of coating during each painting, which is generally 0.8 ~ 1.0kg/m2 for plane base course and 0.5 ~ 0 for opposite base course 6kg/m2。
3. After the waterproof coating is applied to the isolation layer and protective layer, the waterproof layer needs to be protected and isolated, which is also to make the waterproof effect of the waterproof layer more durable. Generally, a layer of fine sand should be evenly spread on the surface of the plane base course as the isolation layer.
According to the concrete requirements, put the rubber strip into the slot to seal the leakage, and then put it into the cement slot according to the concrete requirements. Back pressure grouting: the pressure of grouting must be greater than the pressure of water leakage, so as to push the water back and infiltrate into the coarse and fine joints of the concrete. The molecular weight of grouting material is less than 107-108, and it is directly injected into the pores and leakage joints of the concrete to expand and quickly set when meeting water, so as to achieve the effect of long-term deep water stop. Website: www.dsfsdl.com www.dtdlfs.com micheledimaio.com