How to deal with mortar ground shell

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How to deal with mortar ground shell
1. cause analysis:
The surface of the base is not clean, with floating ash, slurry film or other dirt. In particular, white ash sticks to the grass-roots level, which affects the combination of the grass-roots level and the surface layer. If the grass-roots level is too dry and the grass-roots level is not fully watered and moistened during plastering, the mortar will lose water too fast, the strength is not high, and the bond with the grass-roots level is not firm. The dust on the surface of the base layer that is too dry is also difficult to remove, and the mortar on the opposite layer has a certain isolation effect.
The grass-roots is too smooth; There is accumulated water at the grass-roots level, which leads to the increase of the water-cement ratio of cement mortar, which affects the strength of cement mortar and the bonding with the grass-roots level. In order to strengthen the bonding force between cement mortar and grass-roots level, it is necessary to apply pure cement slurry. If the cement slurry is brushed too early during operation and the surface layer is laid, the cement slurry has been air-dried and hardened.
2. precautions:
Strictly handle the base course; ensure that the base course is moist when plastering cement mortar, and the base course should be watered and moistened the day before construction; the excessively smooth base course should be roughened. Or cement mortar shall be applied after the concrete interface treatment agent is brushed; during construction, ensure that there is no water on the surface of the base course; ash shall be laid immediately after the pure cement slurry is brushed.
3. post-processing:
If a small piece of clear water oozes from the local surface after the construction of the project, the quantity is small. If it is found earlier, some dry cement and yellow sand can be sprinkled in an appropriate amount at a ratio of 1:2 and smoothed. If it is found later, an appropriate amount of dry cement can be sprinkled on the surface after the water evaporates. After moisture absorption, wipe it with wood and then use iron trowel to collect the light. If it is a large area of water seepage, attract the cement mortar shovel up, add some dry 1:2 cement and yellow sand, stir evenly, and wipe again. A large area of cement mortar ground hollowing, cracking, shell, had to choose to shovel off again to deal.
4. sand ash treatment agent:
There is a kind of floor from the sand ash treatment agent, mainly used to deal with the concrete floor, cement floor, wear-resistant floor from the sand ash. Including: old floor renovation, old wall renovation, emery wear-resistant floor renovation, various types of industrial warehouses, logistics centers, factories, parking lots and other places with concrete or cement mortar as the base layer are ground treated with sand, cement ground damage, ground frost cracking and cracking, insufficient cement grade, insufficient strength, carborundum wear-resistant floor with sand and ash, carborundum wear-resistant floor color fade, cement floor cracks, fine stone concrete sand and ash, factory floor cracks, cement shedding, cement floor bubbling after receiving light, empty drum (bubbling) of cement mortar ground surface layer, peeling of cement ground, dusting, weak dust on cement ground, poor ground strength, large area cracking after leveling of cement ground, uneven ground, numerous cracks on ground, white cement color, loose is not solid, cement concrete surface peeling, ground ash or pits, cement hard shell peeling, exposing loose cement and sand, floor slab crack, cement ground hollowing, cement ground damage, burning and freezing and other problems repair and treatment.
Detailed construction steps:
1, the first to make a complete cleaning of the ground, clean up the dust on the ground, as far as possible to leave no dust. If you want to use water for scouring treatment, you must construct the next day and ensure that the ground is not wet or wet.
2, the floor penetrant according to the proportion of 1:1 sub Sheng, mixing evenly, the use of methods: with roller brush directly in the cement floor for rolling, repeated construction two times interval 3 hours construction once. It should be noted here that the local sand is serious and needs to be brushed. The number of brushes and the amount of brushes depend on the site conditions. For places with serious material separation or rapid penetration, materials must be replenished in time to ensure its penetration and infiltration. Generally, the surface density of the place is less, the surface density of the place is more, in the construction to distinguish the disposal. The main points are: the first time: roll coating, the second time: roll coating.
3, maintenance: floor penetrant construction is completed 24 hours after the use.
4. Repair treatment for damage to the ground: if some ground surfaces are uneven caused by stripping and eradicating due to previous damage repair, or uneven phenomena caused by other reasons need to be repaired, the above procedures shall be completed before treatment.

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