First, the definition and role of bathroom backfill bathroom backfill definition:
For some properties, the floor of the bathroom is lower than the other floors in the room by 30 to 40cm when the house is handed in. At this time, the toilet sinking floor part needs to be filled with light material so that its height is only slightly lower than the other floors of the house. The project is called bathroom backfill.
Toilet backfill effect:
The backfilling of the toilet is to close the floor pipe and maintain the smoothness of the indoor moving line.
First, the toilet backfill required materials
Toilet backfill common materials are as follows:
1, slag
2, brick residue
3, perlite,
4, ceramic particles
Each of these materials has its own advantages and disadvantages:
1, slag is considered to be better in these categories, the water-containing properties are better, but also has a certain structure, but now promote environmental protection, there is basically no cinder boiler in Changsha, so the material is more difficult to find. Disadvantages: The slag type contains sulfur oxides, which will form sulfuric acid with water, which will have a certain corrosive effect on iron. It is better not to use slag to backfill the toilets with iron fittings.
2. Brick slag is a kind of backfill material that can be found nowadays and its performance can be comparatively good. Disadvantages are water chestnuts, which have a destructive effect on the waterproof layer, and should be broken when in use to minimize the destructive power per unit area.
3, perlite, texture is too loose, easy to cause sinking, not recommended.
4, ceramic particles is a kind of artificial light aggregate (light aggregate), the shell is hard, the surface has a layer of water and gas to maintain the glaze, the interior has a micro porous pottery-like material. It has good physical, chemical and hydraulic properties, large specific surface area, high porosity, and strong adsorption and pollution interception. Its surface is more porous, more angular, and rough. Because ceramic grains have these characteristics, they are often used in the backfilling of sunken basements.
Third, the toilet backfill construction process
Sunken toilet backfill
1. The best bathroom backfill is ceramic granules made from coal ash slag, but there are very few actual sales and applications. The role of ceramsite is to make sure that the lightweight expansion material ensures the loading load, and to ensure that the filling part is dry and no mildew occurs.
2. Non-standard construction is basically backfilled with construction waste. This phenomenon should be eliminated. In the absence of ceramsite, you can use cinder backfill (guarantee padding), or use new broken bricks (to avoid incorporation of large chunks of cement and brick waste) and cement mortar backfill.
Fourth, bathroom backfill common problems and solutions to common problems Solutions:
1. The waterproof layer of coated membrane is hollow and air bubbles: The main reason is that the grassroots floor is not cleaned cleanly or because the screeding layer is moist, the moisture content is higher than 90%, and the moisture content test is not carried out before brushing, resulting in empty drums. Drum kits. Therefore, before painting the waterproof layer, the base must be cleaned and tested for moisture content.
2. After the ground surface layer is finished, the water storage test is performed. There is a leakage phenomenon: after the waterproof layer of the coating film is finished, the first water storage test must be performed. If there is a leakage phenomenon, the specific part of the leakage can be repaired, or even All rework until the impoundment is 2cm high and no leakage is observed for 24h. After completion of the ground surface layer, a second water storage test was conducted, and no leakage was observed for 24 hours as a final pass. Fill in the water storage inspection records.
3. Poor water storage and drainage on the ground: The main reason was that when the ground cushion was used, the slope was not designed according to the design requirements, and no remedial measures were taken when the screed was used. This caused backslope or unevenness and water retention. Therefore, before doing the coating waterproof layer, first check whether the slope of the base layer meets the requirements. If it does not comply with the design, it should be treated and then be waterproof.
4. After the secondary storage of the ground was completed, it was qualified and accepted, but after the use was completed, leakage still occurred in the toilet: mainly the connection between the toilet drain outlet and the sewage socket connection was not tight, and the construction seal was not used after the connection. Sealed dense, causing leakage after use. After the sanitary ware is installed, it must be carefully checked whether each interface meets the requirements and the next procedure is followed.
Bathroom Decoration Hydroelectricity Renovation Decoration Construction Knowledge Cement House Bathroom Design Toilet Waterproof Sunken Toilet
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