First, the ground cement self-leveling?
1, before cement self-leveling construction, pay attention to the proportion of cement self-leveling, and the appropriate proportion has good strength. The ground without strength is often the source of ground ash in the later period; The starting position of water-greasy self-leveling is also very important, and attention should be paid to ensuring the flatness of the whole ground.
2. A dry mortar material made of special cement, fine aggregate and a variety of imported polymer additives is strictly mixed and stirred with water to form a self-leveling paddle body. Does not contain harmful gases and substances. Now it has been widely used in factories, hospitals, garages and other places
3. Surface treatment at the grass-roots level-removing oil stains and loose objects. If there are potholes or grooves, they should be leveled with mortar or special putty first, and the superelevation or protruding points should be knocked out or smoothed to save materials and improve construction quality.
4. No curing is required at normal temperature. After initial setting at high or low temperature, measures such as watering or covering wet sacks and straw mats shall be taken for curing 1 ~ 3 days. The ground with heavy traffic needs to be maintained for 3 days before it can pass.
Second, the concrete construction steps of ground cement self-leveling
1, before the start of construction, attention should be paid to the ground base to ensure that defects such as empty drums and lumps on the ground have been repaired or carved out at the root. And ensure that the ground base is clean and there are no construction obstacles. In addition, Jiuzheng Home Network suggested that the roots of finished wood products should be tied, and the roots of original indoor facilities should be tied or blocked with materials.
2. Determine the leveling thickness according to the type thickness of decorative materials for floor paving and the standard line of facing. Generally, the surface plastering thickness is not less than 20mm, and the leveling control line will pop up on the wall. According to the leveling control line, plaster cakes around the wall. Generally, the size of ash cake is 5x 125px, the vertical and horizontal spacing is 1.5-2.0m, and the upper plane of ash cake is the ground elevation. If the room is large, it must be reinforced. The mixture ratio of mortar materials of plastering cake and standard reinforcement is the same as that of ground plastering.
3, the role of cement slurry is to make the cement mortar and the ground more closely connected. Cement slurry should be prepared according to the ratio of 1: 0.5. When it is ready, brush it on the ground with a broom and other tools to form an adhesive layer.
4. After brushing the cement mortar, spread the cement mortar. The mixing ratio of cement mortar is cement: sand = 1: 2, which should be stirred evenly. After paving the cement mortar, pat it flat with a long wooden pole, so that the mortar can be closely combined with the base.
The above is how to do the cement self-leveling for everyone. Ground self-leveling construction steps related content, I hope to help everyone.