Alkali resistance of wall tiles is a common situation in life. The main reason is that calcium hydroxide produced by cement reacts with carbon dioxide in the atmosphere, and calcium carbonate is deposited on the surface of concrete products. These calcium carbonate deposits are what people see as wall frost. The alkali resistance of wall tiles is also related to the building materials. Some lime or sand contains a certain amount of soluble alkali, so it will also form saline-alkali solutions such as hydroxide and carbonate, and form frost on the surface of concrete or wall tiles.
Alkali resistance of wall tiles can be prevented in advance. During construction, some substances that can reduce the concentration of calcium hydroxide in cement products can be added to prevent the alkali resistance of wall bricks. Fly ash can be added to lime or cement, and some antifreeze can also play a good preventive role, which can avoid the alkali resistance of wall bricks.
After the emergence of alkali resistance of wall tiles, it will affect the indoor decoration effect and the beauty of the wall, and it will also lead to the paint on the wall falling off slowly. At this time, it is necessary to maintain and treat the wall tiles. When processing, use tools to remove the place where the salt frost appears, then clean the wall and keep it dry. Then, prepare an appropriate amount of isolation agent to smear on the wall, 2~3 times a day, 2~3 hours each time, and let it dry fully after each smear.
After coating the isolation agent, let the wall dry for 24 hours, and then scrape it with putty water paste. After 5 hours, dry naturally, and polish the wall with sandpaper. After the putty on the wall is completely dried, dip a proper amount of latex paint with a brush at intervals of 2~3 days and brush it evenly on the wall. Brush continuously for 2~3 times with an interval of 3 hours. After natural drying, latex paint will be the same color as other walls.