What small details should be paid attention to when installing rubber water stop?

What should I pay attention to when installing rubber water stop? When concrete is poured, the rubber waterstop is partially or completely embedded in the concrete. Because there are many sharp stones and steel bars in concrete, attention should be paid to the installation and positioning method and pouring pressure during the positioning of water stop and concrete pouring to avoid the water stop from being punctured. Because the breaking and tearing strength of plastics and rubber is 3-5 times lower than the tensile strength, if the product is punctured, the ability of the product to resist external force will be greatly reduced. Therefore, special attention should be paid in the construction.

1. When binding reinforcement and formwork, construction personnel must take reliable fixing measures for the embedded rubber water stop to avoid displacement during concrete pouring and ensure the correct position of the water stop in concrete. 2. When fixing the rubber water stop, only the allowed parts of the water stop should be punched, and the body part should not be damaged.

3. The fixing method of water stop shall be carried out according to the construction specifications required by the design. Common fixing methods are: fixing with additional steel bars; Special fixture fixation; Fix with lead wire and template. No matter what fixing method is adopted, it is necessary to ensure the accurate positioning of the water stop, not to damage the effective part of the water stop, and to facilitate concrete pouring. 4, should try to connect as a whole in the factory. Due to the limitation of manufacturing process and transportation conditions, when it is necessary to connect on site, hot-pressing vulcanization gluing (rubber water stop) or welding (plastic water stop) should be adopted. The appearance of the joint should be smooth and bright, and the tensile strength should not be less than 80% of the base material. The so-called "lap joint" without any treatment is absolutely not allowed.

5. The fittings produced by Da Rui Henderson Waterproof Material Factory of our company should be used for all kinds of cross connection points of water stop, so as to ensure that the on-site connection is only carried out in a straight section during construction. 6. We will also provide rubber waterstop joint molds with corresponding specifications. Technicians can go to the construction site for guidance at any time. According to the actual situation, the demander can contact our company. Can refer to: construction and installation of rubber water stop.

Users can choose the width and thickness of rubber water stop as required: users can choose the width and thickness of rubber water stop as required: horizontal and vertical deformation of engineering deformation joints, water pressure, and structural section size of rubber water stop. If the cross-sectional size of rubber waterstop is greater than 500mm, the width of waterstop should not be less than 300mm. However, the following factors should be considered in the caulking plate and sealing material used with the water stop: the steel-edge water stop, also known as the steel-edge rubber water stop, is a combined water stop product with galvanized steel strip on the common rubber bearing, and the rubber main material is rubber and plastic material, which has excellent aging resistance and strong self-adhesion; High temperature in summer does not flow, and low temperature in winter is not brittle; And has excellent water resistance, acid and alkali resistance and aging resistance; Long service life, non-toxic products and good environment. Because the pretreated galvanized steel strip is inserted into the middle of rubber for vulcanization, the adhesive force between them is firm, which has obvious anti-seepage and water-stopping effects.

If the relative deformation at the deformation joint, the magnitude of water pressure is related to the contact of the medium. Environmental conditions, structural surface decoration requirements, concrete section size and cost. Polyethylene foam, anti-corrosion cork board, fiberboard and other boards that meet the engineering needs can be used as caulking materials, and polysulfide building sealant, polyurethane, silica gel and other flexible materials with water resistance, sufficient deformation capacity and good cohesiveness with concrete can be used as sealing materials.

The water-stopping principle of rubber water-stopping belt.

Rubber waterstop uses its high elasticity to produce elastic deformation under various loads, and expands when it meets water, so it can play a firm sealing role, which can not only prevent water from the outside of the building from entering the inside of the building, but also prevent water from the inside of the building from infiltrating into the outside. At the same time, the waterstop can also play a role in shock absorption and buffering.

For the role of rubber water stop in concrete pouring

Before concrete pouring, the water stop and the sundries in the joints should be cleaned up, and pouring should be carried out after the water on the surface of the water stop is discharged, so as to ensure the close combination of the water stop and concrete; When pouring, horizontal deformation joint construction should be carried out first to ensure the operator's concentration. When pouring concrete for horizontal deformation joint (bottom plate), there must be someone who is responsible for tamping and exhaust near the water stop. When pouring the first layer of concrete, make the pouring layer slightly higher than the water stop, so that the concrete can be vibrated and compacted at one time. Finally, tamp the upper part of the water stop point by point with a round stick to discharge the bubbles under the water stop. For the vertical deformation joints of the pool wall, concrete should be poured in layers on both sides at the same time, and the gradation of aggregate should be adjusted to ensure the strength and compactness of concrete.

For the installation method of embedded rubber water stop

Before binding reinforcement, the position line of expansion joint should be popped up on the cushion or lower concrete to determine the position of expansion joint; After the steel bar binding is completed, place the water stop, and both ends of the water stop are fixed with positioning steel bars and flat steel bars, and both ends of the water stop are fastened with flat steel bars and welded with structural steel bars or positioning steel bars; The flat steel is fixed with bolts at a certain distance to ensure that the hollow ring in the middle of the water stop coincides with the center of the deformation joint. At the same time, both ends of the water stop should be slightly inclined to form a horizontal angle of15 ~ 30 with the hollow ring in the middle, which is convenient for exhausting internal air when pouring concrete. For the vertically arranged water stop, concrete blocks with a certain spacing should be bound on the formed steel bars for fixation, and the interface parts should be kept flat; In order to ensure the central elevation of the horizontal rubber water stop, the control line should be popped up on the template, and the reinforcement with water stop ring should be spot-welded at the reinforcement of the bottom plate to check the elevation; Generally, the verticality of the vertical rubber water stop is controlled by the hanging line of the bottom control line.

Installation method of detachable rubber water stop on the ground;

In order to facilitate the installation of detachable water stop, it is necessary to install embedded bolts in advance, fix the embedded bolts on the steel plate with embedded water stop in advance, and pour them into concrete, which should be carefully vibrated to ensure its compactness; The corner of the deformation joint should be made into an arc or an angle of 45, and the radius of the arc should be determined according to the length of the embedded bolt, and the distance between two adjacent bolt heads does not affect the installation of the water stop and the water stop splint. In order to prevent the bolts from being corroded, the bolts should be coated with butter or PVC casing; The water stop should be fixed by punching with a belt according to the actual position of the bolts on site. When installing the water stop, do not forcibly pull the water stop. Asbestos paper or soft metal gasket should be filled between water stop and splint, and between embedded steel plates to ensure sealing [2].

Usually, the rubber waterstop with steel edges is a composite material composed of general retractable rubber and galvanized steel edges on both sides. This kind of water stop mainly depends on the middle rubber section being compressed or stretched between concrete deformation joints, thus achieving the purpose of sealing and stopping water. Generally speaking, the adhesion between concrete and rubber is poor. In conventional construction, because rubber is a soft elastomer, concrete is not easy to be dug out when pouring. Therefore, when the concrete joint expands, tears and twists, the rubber water stop tends to loosen and fall off, resulting in leakage under high head pressure. For joints with large deformation joints, the problem is more prominent. These shortcomings of pure rubber bridge waterstop can be basically overcome by using galvanized steel edge rubber composite waterstop. Moreover, this composite water stop has dual functions, on the one hand, it can prolong the route and delay the seepage speed; On the other hand, the galvanized steel edge has good adhesion with concrete, so that the water stop can bear greater tension and torsion, thus ensuring that the rubber water stop concrete will not loosen and fall off within the effective deformation range, and improving the water stop effect. Steel-edge rubber water stop is a kind of rubber water stop product, which adopts non-uniform thickness structure in cross section and is divided into solid area and waterproof area. So that the stress of each part is even and reasonable. Steel-edge rubber water stop, steel plate with installation holes connected with steel bars, fixed firmly, not easy to shift, so that all parts are evenly and reasonably stressed. The long wall of the telescopic hole is flat, and the contact surface of the formwork is large during the water stop construction, which is not easy to be misplaced; Mounting holes are added on the steel plate to connect with the steel bar, which is firmly fixed and not easy to move. Galvanized steel plate has good adhesion to concrete, and rubber waterstop at the steel edge makes the waterproof performance better.

The working principle of steel edge waterstop is as follows: when the structure is deformed, the middle rubber body of steel edge waterstop is compressed, stretched and deformed, which plays the role of sealing and stopping water; Galvanized steel strip has good adhesion to concrete, and it is not easy to fall off and loosen, so that the water stop can bear greater tension and torsion. In conventional construction, due to the huge vibration force during concrete pouring, it is not easy to fix, and the common rubber water stop will shift, tear and twist, resulting in loosening and falling off, thus causing leakage under the condition of high water pressure. However, when the steel edge water stop is used, there will be no new leakage joints between steel strip and concrete, steel strip and rubber. Therefore, the steel-edge rubber waterstop enhances the anti-seepage performance of structural deformation and plays an important role in ensuring the quality of the whole project. At the same time, the steel edge rubber water stop has good self-determination after installation, which overcomes the process that the rubber water stop needs to be fixed by many parties and is more convenient for construction and installation.

Material selection and requirements of steel edge water stop steel edge: galvanized steel edge is selected; Rubber: Natural rubber, neoprene, EPDM and so on are usually selected. It is required that the rubber and steel edge can be effectively bonded, and the bonding strength (peeling strength) between them should reach 80~ 10N/2.5mm, which will not be pulled off under the change of external conditions. Usually, there is no process hole on the edge of steel edge. When installing pouring concrete, the water stop and the steel edge are wound and fixed with fine iron wire to ensure the compactness of pouring and tamping, so that the galvanized steel plate can be effectively and firmly bonded with the concrete.