Prevention and treatment of common quality problems , Indoor floor stone returning to alkali (originally produced by NG)
Disclaimer: This article only represents the author's personal views and is for learning and communication purposes only.
1. Common phenomenon:
indoor floor stone pan-alkali
2. Cause analysis/standard requirements:
1. The stone protective painting is not up to standard;
2. During on-site construction, the integrity of the original protection is destroyed due to broken or cut plates;
3. There is too much water on the ground, and the stone has been in a humid or water-soaked environment for a long time, causing water to penetrate the protective layer and invade the stone;
4. Some stones have a soft texture due to the stone itself. Or the holes are large, and when they are selected as ground stones, although six-sided protection is provided before construction, due to the soft and porous nature of this type of stone, even if protected, the effect is generally not very good, and the alkaline substance in the cement sand will easily precipitate.
3. Prevention/solution measures:
1. When signing a contract with a stone factory, it must first be clear that the board does need to be protected on six sides, and the protection should be of high quality. Before applying the protective agent, the stone should be kept clean and dry; the number of coating passes and thickness should meet the standards, and the coating parts should be completely intact. After painting, protect it from rain. After the stone arrives at the site, you can sample water and do a protective performance check.
2. Protect the broken or cut stones in a timely manner to ensure the overall integrity of the protection;
3. If the paved stone is in a dark, humid or even heavy moisture environment, you should make a sample first if you are not sure;
4. Do not spray a large amount of water on the stone before operation;
5. A moisture-proof layer should be installed under the ground wall. If there are stone decorations on the floor of toilets, bathrooms and other water-using rooms, they should be treated with anti-seepage treatment;
6, use white cement to paste the floor stones, and scrape the back of the stone to form a good sealing protection for the back of the stone. Moreover, the precipitates between the stone and the seams between the stone slabs will also be diluted by the white color, effectively preventing efflorescence.
According to 6.3.7 of the "Construction Quality Acceptance Specification for Building Ground Engineering GB50209-2010", before laying marble and granite surface layers, the back and sides of the plates should be treated with alkali prevention.
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5. Correct picture:
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