The ground leveling is actually to repair the ground. It is generally used in the decoration of the ground floor before the laying of the floor and floor heating, and the appropriate adjustment of the height difference of the ground to make the floor and floor heating lay more smoothly and better. As a ground decoration. Here we will introduce ground floor screeds and screeds construction technology acceptance criteria.
Construction technology of ground leveling mortar
When leveling, the surface debris must be cleaned first, which cannot affect the thickness of the leveling layer, and can be properly chiseled for places that are too high locally.
The second step is sprinkling and wetting, using the combination of the base layer and the leveling layer, and the height of the punching and pasting cakes is set: the gray cake is pasted according to 1.5m. When the leveling mortar is spread, the first step is to punch the tendons with a spacing of 1.5m according to the direction of the flow. If it is larger than 6m, set a 20 * 20mm division seam.
The third step is to pave cement mortar, install the ash according to the block, and flatten it. You can use the scraper bar to scrape the flattening bar. After finding the slope, rub it with a wooden trowel. After the floating water is gone, the person steps on to have footprints But don't sag for a degree, then press it with the iron trowel a second time.
The best step is to carry out curing, after screeding, compaction and watering curing, curing period is 7 days. The sand used can not be too fine, you can use medium sand, the leveling layer laying thickness is evenly in place, so as to avoid hollowing and cracking of the leveling layer, the cement should be stable, and the degree of wiping is appropriate.
Ground leveling mortar acceptance standard
1. Check whether the surface layer and base layer of cement mortar are firm and cannot be swollen.
2. The surface layer of cement mortar should be compacted and calendered, and there should be no defects such as cracks, peeling and sanding.
3. There should be no backwashing on the ground.
4. Measuring the flatness of the surface, the deviation cannot be greater than 4mm.
5. Sweep away the dust from the base, then brush off the oil on the base with a 10% aqueous solution of caustic soda, and rinse the lye with water in time.
6. When laying cement money, it is necessary to paint a layer of cement slurry.
7. After painting, you can spread cement mortar and spread the mortar evenly between the gray cakes.
8. After completion, it should be sprinkled with water to maintain it and keep it moist. The curing time should not be less than 7 days, and the compressive strength can only reach 5Mpa.
