Coating general knowledge: base treatment and construction condition inspection before concrete coating

The key points are as follows: (1) the treatment of concrete base surface: when the surface of concrete structure is porous, uneven, cracks and other defects, it will have a certain impact on the appearance of the paint film, and the water content of concrete is the key to the quality of the coating After the concrete base is cured, the base can be pretreated Repair the pit on the concrete surface with mortar; clean the protruding concrete and mortar block on the concrete surface with a polishing machine; grind the dislocation between the splicing joints of the formwork into an inclined slope or flat during the concrete construction; correct the intersection between the ground and the wall into a right angle; make the final comprehensive grinding of all the concrete areas to be coated, and wipe with a wet cloth Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coating home news: (1) concrete base treatment: when the surface of concrete structure is porous, uneven, cracks and other defects, it will have a certain impact on the appearance of the paint film The water content of concrete is the key to the quality of the coating After the concrete base is cured, the base can be pretreated Repair the pit on the concrete surface with mortar; clean the protruding concrete and mortar block on the concrete surface with a polishing machine; grind the dislocation between the splicing joints of the formwork into an inclined slope or flat during the concrete construction; correct the intersection between the ground and the wall into a right angle; make the final comprehensive grinding of all the concrete areas to be painted, wipe the concrete surface with a wet cloth, and clean the dirt Clean the oil and grease with non phosphorus detergent (no acid or alkali solvent is allowed), and then wash it with water and dry it (2) Inspection of construction conditions: after 28 days of concrete pouring and qualified base pretreatment, check the water content of the base with a special inspection instrument The water content of the concrete base shall not be greater than 8%, and the pH value shall not be greater than 8; the maximum gap under the 2m guiding rule shall be 7mm; the maximum gap under the 0.2m guiding rule shall be 3mm; depressions with surface area greater than 1m2 and depth greater than mm are not allowed; Unless the crack resistance has been considered in the coating used, the concrete surface shall not be allowed to have cracks that can be expanded The construction environment temperature is 5-35 ℃, the relative humidity is less than 85%, and the base temperature is at least 3 ℃ higher than the dew point If necessary, dry compressed air must be used for dehumidification 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,