How to fill in the sunken bathroom

1. Clean and clean the caisson, fix the inlet and drainage pipes, stir the ceramsite and cement, fill and compact, and add barbed wire for leveling.

Manipulation Rules: 1Before carrying out lightweight backfilling, the caisson should be cleaned and the inlet and outlet pipes should be fixed to avoid touching the pipes during backfilling.

3.The bottom of the box should be made of ceramsite to make the secondary drainage channel, which is generally led to the secondary drainage port by the bottom edge or middle of the box.

4.When the caisson is backfilled about 4 5, level about 30mm-60mm with cement mortar, and it should be compacted. If the bathtub is placed, 6 steel bars must be added to make a 20cm square.

5.Finally, add barbed wire and use 1:3 to make cement mortar leveling, put the slope, and use it as a waterproof bottom layer.

Second, quality requirements:

1.The pipe is fixed and required to be firm.

2.The ratio of ceramsite and cement should be accurate, add water accurately, and stir evenly.

3.The joints of the barbed wire should overlap by more than 100 mm.

3. Matters to be aware of:

1.Compact but don't step on the pipes.

2.The backfill should be dense.

3.Iron wire and cement mortar should be collective, pay attention to the slope of cement mortar leveling.

4.Pay attention to the elevation of the bathroom floor, and do not raise it above the floor of the corridor or hall.

Link 1: Do two waterproof coatings, these two waterproofing must be done together with the wall, and the height of the wall should be more than 40 cm higher than the upper edge of the caisson. Ensure that the seepage water in the upper layer will not expand to the periphery, and can only be discharged to the floor drain.

Link 2: Red brick or concrete is used to isolate the overhead, and the caisson is divided into several lattices of about 400*400. Many people don't do this step, in fact, this is quite the first link, with such a load-bearing isolation, the concrete layer above will not fall down.

Otherwise, after a few years, the bathroom floor will sink, crack and leak.

Step 3: Fill ceramsite or coal ash slag. Fill the moisture-proof ceramsite and the lattice, no need to press too tightly, and be generous, because it is not load-bearing, and only plays the role of absorbing water vapor.

Step 4: Cloth reinforcement. A layer of 200mm*200mm square steel mesh formed by 5 mm diameter steel bars is placed above the lattice to ensure the firmness and uniform stress of the concrete layer.

Session 5: Inverted concrete layer, 40 mm thickness C25 fine stone concrete leveling. This layer should be made of the water slope, do two times of waterproof coating, even the wall to do, after the waterproof layer is dry, it is necessary to brush the plain cement slurry to protect it, so as not to scratch when paving floor tiles and porcelain tiles.

After the protective layer is dry, the Venerable Master will do the next step of tile paving work.

Use sand, cement, water, mix together to make a paste, fill it and then flatten it, it's strong!