Paint knowledge | how can thick steel structure fireproof coating crack

Core tip: the common problem of thick steel structure fire retardant coating in the construction process is the quality problem of cracking and even falling off For this problem, we think that the factors can be divided into the following aspects: first, the impact of natural conditions; because of the regional, seasonal and air humidity differences, the water loss rate of coating layer is directly affected 2、 The technical disclosure was not in place; the details of the investigation on the management and operation workers were not clear 3、 The detail treatment is not dense; after the construction joint is reserved in the coating at the corner, the shrinkage deformation at the construction joint position is not obvious at first, with the time extension, wind change and gas Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Home of coatings news: the common problem of thick steel structure fire retardant coating in the construction process is the quality problem of cracking and even falling off For this problem, we think that the factors can be divided into the following aspects: first, the impact of natural conditions; because of the regional, seasonal and air humidity differences, the water loss rate of coating layer is directly affected 2、 The technical disclosure was not in place; the details of the investigation on the management and operation workers were not clear 3、 The detail treatment is not dense; after the construction joint is left in the coating at the corner, the dry shrinkage deformation at the construction joint position is not obvious at first, and with the time extension, wind change and climate drying and other factors, the dry shrinkage deformation and cracking at the suture will gradually occur, leading to serious cracking and large area hollowing at the end The corner, special-shaped components and joint details of components are not treated timely and compactly, which will cause different degrees of cracking due to uneven shrinkage deformation Then we can take measures for the above problems: for the natural conditions, typhoon season, special personnel should pay attention to the weather changes, take preventive measures in advance, and try to reduce the construction work; When the wind is strong and the air humidity is below 40%, the moisture in each coating of thick steel structure fire retardant coating can be effectively controlled and guaranteed, and the moisture in each coating will not be lost too early before the initial setting of the coating, so that the coating can be fully combined and reach the strength When the air humidity is more than 70%, the construction interval of each coating shall be appropriately extended Problems of inadequate technical disclosure: ask experts for guidance and make clear the person in charge of technical disclosure The disclosure contents shall be detailed and comprehensive, targeted and instructive to the site construction In terms of detail treatment, construction joints shall not be left as far as possible; technical disclosure shall be in place, and inspection and rectification efforts shall be increased at the same time, and the best time and strength of detail compaction shall be strictly controlled and grasped Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,