Common knowledge of coating: how to deal with cracks in coating

Core tips: a) avoid the whitewashing cracks, and try to avoid the season with large temperature difference between day and night during the whitewashing construction It is better to use mortar to reduce mixing water and reduce the possibility of water collection cracks B) The drying time between the coating layer and the finishing layer shall be extended as far as possible The reaction between cement and water in the mortar shall be completed in about one month However, the drying shrinkage of the mortar generally will be very small after more than 90 days, so it is necessary to ensure that there is enough time and air temperature conditions for drying after the finishing construction C) The interval time between the coating layer and the finishing layer, i.e to make the largest shrinkage of the finishing layer fully react Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: a) avoid whitewashing cracks Try to avoid the season with large temperature difference between day and night during whitewashing construction It is better to use mortar to reduce mixing water and reduce the possibility of water collection cracks B) The drying time between the coating layer and the finishing layer shall be extended as far as possible The reaction between cement and water in the mortar shall be completed in about one month However, the drying shrinkage of the mortar generally will be very small after more than 90 days, so it is necessary to ensure that there is enough time and air temperature conditions for drying after the finishing construction C) The interval time between the coating layer and the finishing layer is to allow the largest shrinkage reaction of the coating layer to be completed before coating construction Even if the coating layer has cracked by then, the shrinkage deformation of the coating layer has been completed Only minor repair of the cracks and coating construction can avoid cracks D) If the construction progress is tight and the coating construction is to be carried out shortly after the completion of the finishing layer, an appropriate amount of expansion agent can be added during the mixing construction of the finishing layer to make the expansion self stress generated in the drying process after the construction of the finishing layer to offset the shrinkage deformation of the finishing layer itself, so as to avoid cracks E) In order to achieve the best effect, the coating construction should be diluted and mixed according to the proportion and formula specified by the manufacturer F) The quality problem of coating itself can be detected by the quality inspection department recognized by the state G) For the treatment of cracked wall surface, when the two points in 5.6 are removed, the wall surface can be mixed and covered with a new layer of similar compatible coating with good extensibility when the wall surface is completely dry H) 5.6 the problems caused by the two points shall be removed from the new construction after the coating layer is removed 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,