How to deal with the waterproof part of the deformation joint? With the large-scale construction of houses, the development of land resources, a lot of soil erosion, the loss of water and soil has caused a great impact, the surface layer of the ground will become lower, and the water seepage condition will be serious. . Therefore, we must find ways to prevent sudden leaks such as water leakage or water seepage. How to solve the leakage of the deformation crack in the basement: the reason analysis, the concrete sealing belt in the deformation joint before the concrete filling, did not take feasible fixing measures or improper fixing methods. After the concrete is poured, the position of the water stop belt is inaccurate, and it is often squeezed by the concrete. The water stop belt is twisted, curled and even extruded outside the wall. The goal of the grinding and polishing step is to prepare the final polished sample without deformation and suitable for analysis. This can be done in a number of ways depending on the overall objectives of the laboratory. Whether the lab is looking for the fastest overall process, the best surface finish or the versatility to prepare many different materials, Buehler can provide the solution for your grinding and polishing needs. Polishing Consumables,Grinding Sandpaper Metallography ,Belt Grinding Sample ,Polishing With A Grinder TROJAN (Suzhou) Technology Co., Ltd. , https://www.troolymaterial.com
Therefore, the water stop band does not function to stop water and adapt to deformation. The joint of the water stop joint is not well bonded, and it is in a falling or semi-shedding state, and cannot form a closed waterproof ring; in addition, because the water stop belt is located in the middle of the deformation joint, such as being broken by a hard object, or a water stop belt The joint position is not selected properly. 3 Some due to improper concrete mix ratio, the shrinkage coefficient is large, resulting in the concrete wrapping of the water-stopping wing is not strict, especially under the water stop belt at the bottom plate part and the corner, because the concrete vibrating is not strict, even leaving a gap, It becomes a passage for leaking water, and the pressurized water leaks along the gap between the two wings of the water stop and the concrete. Due to the uneven settlement of the foundation, the building is deformed, causing the waterstop to be cracked beyond the limit, causing leakage. Some construction units use water glass and cement to fill the leaking water, and some use the plugging spirit to fill and compact, and also use polymer cement mortar and so on. These simple treatment methods are rigid, have low tensile strength, and are not suitable for structural deformation, and water seepage still occurs.
Preventive measures: For the concrete pouring at the deformation joint, the installation and fixing of the water stop belt, the control of the width, the treatment of the joint filling, the treatment of the sealing joint, etc., it is necessary to carry out the technical disclosure, and at the same time, a special person is responsible for the inspection and implementation. Acceptance to ensure the implementation of the construction design. Treatment method: Manually clean the base surface, the construction scope is 400mm wide on both sides of the original deformation joint, and the original embedded material (cement grease, asphalt hemp) in the deformation joint is cleaned. The base surface of the two sides of the joint is cut to a width of about 80~100mm; the hemp (5~10 thick) is pre-embedded into the lower part of the expansion joint of the bottom plate, and the rubber sealing tape is tightly attached, and the LB-8 speed hard micro-expansion cement is used to set φ8@ 400~450mm aluminum grouting nozzle, and then LB-92 water-soluble grouting seal water stop treatment; LB-7 neoprene latex polymer cement mortar is embedded in the groove of the batch gap to repair the two sides of the seam Ming: 39mm width reserved within the seam, the error is minus 1mm); After the above project has reached a certain strength, use φ40mm water-expanding rubber rod to insert into the reserved seam; (Note: the original preset foam should be used during construction) The board is cleaned up.)
Through the introduction, we know how to deal with the waterproofing of the deformation joints, and better prevent the defense. We should use what materials to make the deformation joints, and follow our steps to understand.
60×40mm polystyrene foam board is used as the cushion layer embedded in the deformation joint and pressed against the water-expandable rubber rod surface; LB-10D two-component polyurethane building sealant is embedded in the joint for sealing treatment, the construction thickness is 30mm . 60×40mm polystyrene foam board is used as a cushion layer embedded in the deformation joint and pressed against the polyurethane building sealant surface; 2.0mm thick LB-3 chlorinated polyethylene-rubber blend waterproofing membrane is used to seal the sealing surface. The construction width is 350mm (including deformation joint), and the appropriate deformation allowance is reserved in the seam. The closing is sealed with a 50mm wide single-sided isobutyl adhesive tape (Note: the base surface is required to be flat, dense, and powder-free); 3mm is selected. The thick rubber sheet is used as the waterproof membrane cushion, and the construction method is empty. The 2mm thick stainless steel plate is used as the wall protection layer. The actual width is 400mm and the plane is 300mm. It is prefabricated into “U†type plate and is expanded with expansion screws.ç ¼ Connect.