The steel plate water stop is a 300mmx3mm steel plate embedded when pouring the lower concrete, in which the upper part of 10- 15cm is exposed, and this part of the steel plate will be poured together when pouring the concrete next time to prevent the pressure water from infiltrating outward.
Water stop is suitable for foundation water stop, dam water stop, dam crest water stop, corridor water stop, dam middle hole water stop, factory water stop, and transverse joint water stop under overflow surface. It is the most ideal leak-proof product.
Extended data:
Matters needing attention in construction and installation of water stop:
1, the water stop shall not be exposed to the open air for a long time to prevent rain and avoid contact with highly polluting chemicals.
2. In the process of transportation and construction, prevent the water stop from being damaged by machinery and steel bars.
3, in the process of construction, water stop must be reliably fixed, to avoid displacement when pouring concrete, and ensure the correct position of water stop in concrete.
4. The fixing methods of water stop are: fixing with additional steel bars, fixing with special fixtures, fixing with lead wires and templates, etc. (figure). If perforation is needed, only the installation area at the edge of the water stop should be selected, and other parts should not be damaged.
5. The waterstop will be connected into a whole in the factory. If field connection is required, the electric heating plate can be vulcanized or cold bonded (rubber water stop) or welded (plastic water stop).
Key points of steel plate water stop construction:
1, try 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 fully welded on both sides, and the steel plate lap should be not less than 20mm；;
3. Treatment of the corner of the wall, including bending of the whole steel plate, T-welding and 7-welding.
4. The support welding of water-stop steel plate can be spot-welded on the main reinforcement with small steel bars;
5. When the water-stop steel plate passes through the column stirrup, the stirrup can be disconnected, made into an open hoop, and welded on the steel plate.
6. The "opening" of the water stop steel plate faces the water surface.
With regard to the installation of water-stop hose that swells when meeting water, it should:
1. There is a reserved paste method during installation. When pouring concrete for the first time, a water stop groove should be reserved (battens can be reserved in the template). After dismantling the first concrete formwork, remove the surface to make the joint surface waterless, clean and free of sundries.
2. Insert the water stop into the reserved groove. If no groove is reserved, the vertical joint can be pasted with adhesive in full length, or the water stop can be fixed with cement nails and wooden strips; Horizontal joints can be directly pasted on the concrete surface. Concrete should be poured as soon as possible after the water stop is pasted. In the process of installation and pasting, the water stop should be prevented from swelling, pollution and water absorption, so as not to affect the use effect.
3. This product is preset on the interface between concrete construction joint and post-pouring belt. After the second pouring of concrete (that is, in the state of being wrapped by concrete), when it swells with water, it can completely block and block the leaking water source. High expansion ratio and strong fluidity. The waterstops placed in construction joints and post-pouring zones have strong balance and self-healing functions, and can automatically block new tiny cracks caused by settlement.
4. For the completed project, if the gap leaks, the water stop can be used to stop the leakage again. The waterproof and anti-seepage effect is better than that of traditional steel plate and rubber plastic water stop, and the construction method is simple and easy, saving labor and time. The main materials are inorganic mineral raw materials, which have the characteristics of aging resistance, corrosion resistance and no pollution.
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