How to control the quality control of basement waterproofing construction?

There is no problem if it can be done in accordance with the relevant national norms, the question is if it can be done, who can do it in practice!

Underground waterproofing. 1.Control Point

1) Material selection.

2) Hollow drums. 3) Leakage.

2.[Precautionary measures].

1) Comparison of multiple schemes and materials, choose a waterproof material that is most reasonable and most suitable for the actual situation on site. Burn the game.

2) The moisture content of the base layer should be strictly controlled during construction; When the coil is laid, the air should be completely discharged, and the joints should be carefully operated to make the bonding and limbs firm.

For special parts such as yin and yang angles and pipe roots, before waterproof construction, they should be strengthened, and effective measures can be taken according to specific parts.

3) The end of the coil must be closed with caulking paste or other sealing materials;

After the construction of the waterproof layer is completed, it is necessary to do a good job in the protection of the finished product and make the protective layer in time according to the design requirements.

When the waterproofing layer of the basement exterior wall is constructed, the work must ensure that there is no groundwater and the surface of the wall panel is dry.

In addition to ensuring the quality of waterproof materials and the cleanliness of the base layer during the construction of the waterproof layer, special attention should be paid to the deformation joints, and strengthening measures should be taken for the post-pouring belt, construction joints and structural corners.

Before the construction of the waterproof coating, the debris and sand particles on the surface of the basement exterior wall should be cleaned, and the bolt holes on the wall panel should be repaired in place and leveled in advance.

The waterproofing layer must be closed, and the exterior walls of the basement should be painted several times until the design thickness is reached.

After the construction of the waterproof layer is completed, it is forbidden to destroy and destroy it artificially, and the construction of the waterproof layer must be closed, and the waterproof layer must exceed the floor part of 50cm high.

The protective layer outside the waterproof layer is protected by cement mortar. Before the construction of the protective layer, 10x10 galvanized steel wire mesh and blowing sand need to be hung, and there should be closed measures at the top to prevent debris from falling into people.

The backfill of the basement outer wall should be clean and free of debris, and must be layered and tamped to prevent the backfill from sinking and damaging the waterproof layer of the basement exterior wall by driving the waterproof protective layer to sink in the future.

A basement is a room in a building that is below ground level outdoors. Building a basement below the ground floor of a house can improve the efficiency of building land. Some high-rise buildings have a large foundation depth, and make full use of this depth to build basements, which has good economic and practical effects.

Today, I will introduce to you the practices of basement waterproofing projects and the specifications for project quality acceptance.

First, the basement waterproof engineering practice.

The construction materials and auxiliary materials of the basement waterproofing project are mostly flammable, and the warehouse and construction site where the materials are stored must comply with the relevant national fire prevention regulations. The use of solvents such as xylene should have corresponding anti-virus measures. The grade of the basement waterproofing project is first-class, and for such a building, three or more waterproofing courses should be carried out.

Among them, it is necessary to have reinforced concrete structural waterproofing, and then it is necessary to set up flexible waterproofing, and then add some other effective waterproofing measures. Its material selection and practice mainly include compensating concrete structure shrinkage and self-waterproofing. Use elastomer materials to synthesize polymer waterproofing membranes, or modify polyester tire polymers into asphalt waterproofing membranes, and the outside of the membrane should be backfilled with Panax notoginseng ash soil during workmanship, and the floor overhead bushing wall should be additionally made and drained.

The working conditions of the waterproof project: the 1:3 cement mortar screed with a thickness of 15-20mm should have sufficient strength.

The leveling layer should be smoothed and calendered, solid, firm, and sandless, and there should be no concave and convex, loose, bulging, cracks, hemp surface and other phenomena. Its flatness should be checked by a 2m long ruler, and the gap between the leveling layer and the ruler should not exceed 5mm. The surface of the screed must be clean and dry, and its moisture content must not be greater than 9%.

The junction of the screed layer and the vertical wall, the yin and yang angles of the screed layer and the puddle, the pit, etc., should be made into an arc. The slope of the screed layer should meet the requirements of the design and the requirements of the regulations, and no local water accumulation.

2. What are the specifications for the quality acceptance of basement waterproof engineering?

Material inspection and material inspection report.

The waterproof grade standard is divided into four levels of waterproof grade standards, and stipulates the amount of leakage water of the corresponding waterproof grade of engineering design.

The bonding quality of the waterproofing membrane joints ensures the bonding quality of the waterproofing membrane joints.

Concrete preparation, waterproof concrete is an important fortification for waterproofing of underground engineering.

The selection of waterproof materials, the waterproof layer of cement mortar cancels the traditional five-layer practice of ordinary cement mortar, and emphasizes the performance indicators of waterproof mortar; In the detailed structures such as construction joints and post-pouring belts, embedded grouting pipes, water-swelling water-stopping glue and cement-based permeable crystalline waterproof coatings are added. The application of plastic drainage boards has been added to the drainage project.

Although the basement is very inconspicuous, but its waterproof engineering is also very important, about the basement waterproof engineering practices and basement waterproof engineering quality acceptance specifications for you to introduce so much, I hope to help you, do a good waterproofing, prevent trouble.