Note with various rubber water
1 embedded rubber water stop belt should be formed in the surface of the installation, puffing, rust, grease should be cleaned。 If there are blisters, nail holes, cracks should be welded up。 If the extension is suitable for lap welding。 The lap length should not be less than 20mm, and should be welded on both sides (including the "nose"。 Part)。 The test can ensure the quality can be butt welded, but not by manual electric arc welding。
2If is a rubber watertight strip by welding joint surface should be smooth, no blisters or cracks, no seepage. In the joint factory should check the number of not less than the total number of joint joint inspection of 20%. in the field of welding, should be one by one appearance and penetration inspection.
3 embedded rubber water stop belt is accurate, should be firmly installed, the nose and the central line of the joint center line deviation of 5 mm. After positioning in the nose cavity filled plastic material shall not be used. The deformation, crack and tear of polyvinyl chloride (PVC) or the rubber sealing belt.
4 embedded rubber water stop belt should be used in connecting heat vulcanization bonding; PVC strip connection, according to the requirements of manufacturers can use hot bonding (lap length not less than 10 cm). The joint should be checked one by one, no bubbles, slag or false welding. Strength check of waterstop joints when necessary. The tensile strength shall not be less than the strength of the base material 75%.
5 if the embedded rubber waterstop joint with PVC sealing strip, adopt bolt joint method (commonly known as plastic Bao Zitong), bolting length should not be less than 35 cm。 The waterstop shall be template clamping and positioning, firmly supported。 The level of sealing sheet (strip) or 50 cm range should not be set in horizontal construction joints。 If cannot avoid, measures should be taken to put the sealing sheet (strip) embedded in or leave。 Waterproof rubber zhishuidai scheme is adopted, many embedded rubber water stop sealing method in advance。