After the wear-resistant flooring construction finished white mist flowers and can not eliminate after cleaning with water and brush? The answer is "alkaline"
Everyone knows that the main ingredient in concrete is calcium silicate (weak acid strong alkali salt) that reacts with water to form free calcium, silicic acid, and hydroxide. The loose porous structure of concrete determines the concrete has a certain moisture content. When there is enough water in the concrete, under the effect of capillary pressure, the water can rise up to about 10cm along the capillary hole. At this time, the salt in the concrete is pulled out of the concrete by the water, while the calcium hydroxide and sodium in the concrete. Potassium and other substances are also eluted with water as a carrier. Upon reaching the concrete surface, these substances remain on the concrete surface as the water evaporates, forming white powder crystals, or reacting with carbon dioxide in the air to crystallize on the surface of the concrete to form a white hard block. Effluent concrete is formed in this way.
The treatment of the abrasion-resistant floor efflorescence can be carried out according to the following process:
1. Use a dry brush to brush hard;
2. Wash with water and brush;
3, use a high-pressure water gun or after a slight sandblast, wash again with water;
4. For alkaline substances that are insoluble in water, it can be washed with dilute weak acid, such as 5% to 10% hydrochloric acid solution, 10% phosphoric acid solution, 5% mixed solution of phosphoric acid and acetic acid, and cleaning with acid solution. When you do, you must be careful not to damage the appearance of the entire wall, because the acid has a certain degree of corrosion of the concrete.
In order to prevent the recurrence of pantothenic phenomena, moisture barriers, such as sealants, coatings, and poorly permeable waterproof coatings, should be used on exterior walls after the effluent sites have been cleaned; the use of waterproof vapors on the interior walls is accompanied by single breathability. coating.
Everyone knows that the main ingredient in concrete is calcium silicate (weak acid strong alkali salt) that reacts with water to form free calcium, silicic acid, and hydroxide. The loose porous structure of concrete determines the concrete has a certain moisture content. When there is enough water in the concrete, under the effect of capillary pressure, the water can rise up to about 10cm along the capillary hole. At this time, the salt in the concrete is pulled out of the concrete by the water, while the calcium hydroxide and sodium in the concrete. Potassium and other substances are also eluted with water as a carrier. Upon reaching the concrete surface, these substances remain on the concrete surface as the water evaporates, forming white powder crystals, or reacting with carbon dioxide in the air to crystallize on the surface of the concrete to form a white hard block. Effluent concrete is formed in this way.
The treatment of the abrasion-resistant floor efflorescence can be carried out according to the following process:
1. Use a dry brush to brush hard;
2. Wash with water and brush;
3, use a high-pressure water gun or after a slight sandblast, wash again with water;
4. For alkaline substances that are insoluble in water, it can be washed with dilute weak acid, such as 5% to 10% hydrochloric acid solution, 10% phosphoric acid solution, 5% mixed solution of phosphoric acid and acetic acid, and cleaning with acid solution. When you do, you must be careful not to damage the appearance of the entire wall, because the acid has a certain degree of corrosion of the concrete.
In order to prevent the recurrence of pantothenic phenomena, moisture barriers, such as sealants, coatings, and poorly permeable waterproof coatings, should be used on exterior walls after the effluent sites have been cleaned; the use of waterproof vapors on the interior walls is accompanied by single breathability. coating.
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