Product description of water-stop steel plate and construction points of water-stop steel plate

In the box foundation or basement, the concrete of the bottom plate and the external wall slab is poured separately. When the wall slab concrete is poured next time, there is a construction joint. When the position of this joint is below the groundwater level, it is Prone to water seepage. This requires technical treatment of this seam, and there are many treatment methods, among which the more common method is to install water-stop steel plates. That is, when pouring the lower layer of concrete, pre-bury 300*3 steel plates, of which the upper part of 10-15cm is exposed to the outside, and this part of the steel plates are poured in together when the concrete is poured next time to prevent the pressure from outside from infiltrating. effect. Generally, the steel waterstop is made of cold-rolled plate as the base material, because the thickness of the cold plate can be uniform, the thickness of the hot plate is generally not uniform, the thickness is generally 2 mm or 3 mm, and the length is generally processed into a length of 3 meters or 6 Meters long, usually three meters for easy transportation. The water-stop steel plate has higher requirements for welded joints, and there should be no leaks, which affects the waterproof performance.

The steel waterstop is the pre-embedded steel plate of 300mmx3mm when pouring the lower layer of concrete, of which the upper part of 10-15cm is exposed to the outside, and this part of the steel plate is poured in together when the concrete is poured next time to prevent the outside The effect of pressure water infiltration. Generally, the steel waterstop is made of cold-rolled plate as the base material, because the thickness of the cold plate can be uniform, the thickness of the hot plate is generally not uniform, the thickness is generally 2 mm or 3 mm, and the length is generally processed into a length of 3 meters or 6 Meters long, usually three meters for easy transportation. Waterstop steel plates have higher requirements for welded joints. (Guide: Cold heading and processing of threaded fasteners)

Key points of water-stop steel plate construction

1. Every effort should be made to ensure that the water-stop steel plate is on the center line of the wall;

2. The welding between the two steel plates should be full and double-sided, and the steel plate overlap should not be less than 200mm;

3. Treatment of the corners of the wall: 1. Bending the whole steel plate; 2. T-shaped welding; 3. 7-shaped welding.

4. The support welding of the water-stop steel plate can be welded to the main reinforcement with small steel bars;

5. When the water-stop steel plate passes through the column stirrups, the passed stirrups can be disconnected, made into an open hoop, and welded to the steel plate by electric welding.

6. The opening of the water-stop steel plate faces the water facing surface. .

Summary: Precautions for the construction of water-stop steel plate

1. Operators must have a certificate to work, and must wear a safety helmet when entering the scene.

2. The electric welding machine must have two wires in place, the primary wire length shall not be greater than 15m, and the secondary wire shall not be greater than 5m. Reinforcing steel bars shall not be used as the ground wire. The electric welding machine must be wired by a full-time electrician.

3. Wear a welding helmet and protective gloves when welding.

4. Before leaving get off work every day, the machinery and tools used should be returned to the warehouse, and the debris in the working surface should be cleaned up until the work is finished.

5. It is strictly forbidden to cool down the weld with water when welding, and measures should be taken to cover it in case of rain.

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