Notice! This is a common problem with the waterproof quality of steel structure workshops!

Now is the era of transformation from traditional brick and concrete workshops to steel structure workshops. The construction period of brick-concrete workshop is long and the cost is high, while the steel structure workshop has outstanding advantages, such as wide range of uses, simple construction, durability, beautiful and practical, reasonable cost, etc. Therefore, a large number of enterprises choose steel structure workshop. However, due to construction, aging of the roof, industrial pollution, weather factors, and acid rain in Chongqing, the water leakage of the steel structure workshop is more serious. The steel structure workshop waterproofing project is a systematic management project. Any problems in the design, materials, construction, governance, maintenance, etc., will affect the quality of the entire project. If leakage occurs, it may damage the equipment in the plant. In order to avoid unnecessary losses, if there is leakage on the surface of the steel structure factory, a high degree of attention must be paid. The editor of Chongqing steel structure workshop has made the following analysis on the common quality problems of waterproof engineering of steel structure workshop based on years of practice of waterproof engineering of steel structure workshop. Common problems and analysis of waterproof engineering 1. Structural problems of steel structure workshop a. The large temperature difference between day and night in Chongqing may cause the color steel tile of the steel structure workshop to expand and shrink, resulting in rivet falling off and color steel tile dislocation; b. Color steel tile density difference and poor quality , it will cause local cracking of the roof color steel tile, damage the waterproof layer, and cause roof leakage; 2. Leakage of the waterproof layer of the coating A, the moisture content of the coating is greater than 9%. B. When the base layer treatment agent is painted, the brushing is not in place, and the paint is not brushed into the pores on the surface of the base layer as much as possible, so that a large amount of dust and other inorganic impurities left by the base layer are mixed with the paint to cause shelling. C. I did not paint in accordance with the principle of 'high first, then low, first far and then near'. D. There is no strict control of the thickness of the waterproof coating layer, the thickness of the sub-coating and the interval time. E. The protective layer construction is not carried out as soon as possible after the coating film is applied. F. The additional layer is an important measure to ensure the waterproof quality. Before large-scale construction, no additional layer is made on the details of the water drop, pipe root, yin and yang corners. 3. Problems between the rigid protective layer and the waterproof layer There is no isolation layer between the rigid protective layer and the waterproof layer, and there is even an intention to increase the bonding between the waterproof layer and the rigid protective layer. Due to the deformation, shrinkage and cracking of the rigid protective layer, the waterproof layer is damaged by stretching and extrusion. 4. Improper construction of roof corners When the horizontal inner corners such as the color steel tile roof and parapet wall follow the old method to make large round corners, the consequences of the fillet radius reaching 200-300mm: ①. Waste materials and increase roof load; ②. Structural board Stress deformation and dry shrinkage of base mortar lead to easy cracking of large fillet base and structural board, tearing the waterproof layer; 3. It is more difficult to construct the corner of the brick-concrete factory building; 5. The downpipe and the gutter are blocked a. Strictly prevent debris from falling into the pipeline; b. The slope load of the downspout exceeds the requirements, resulting in backwatering of water; c. The gutter is not cleaned regularly, and the drainage is not smooth, resulting in stagnant water; d. The gutter grows grass and moss, and the drainage is not good. smooth, resulting in water leakage.