What does the waterstop do and what does the waterstop do?

The water-stop sheet is on the inner rod of the water-stopping screw, which plays the role of fixing the template and preventing the violent mold when pouring the concrete wall, and the inner rod of the welded water-stopping sheet after the construction is completed stays in the concrete wall and plays the role of water-stopping <>

Waterstop is a kind of rubber product, which is mainly used for foundation engineering that is integrated with the concrete structure in the construction joint and deformation joint when the concrete is cast-in-situ to prevent water leakage and water seepage of the building structure.

According to the different materials selected for the product, it can be divided into: natural rubber waterstop, neoprene rubber waterstop, nitrile rubber waterstop, EPDM rubber.

Waterstops, plastic (PVC) waterstops, and rubber and plastic waterstops, etc. According to the different structural forms, it can be divided into: CB type rubber waterstop, CP type rubber waterstop, EB type rubber waterstop, EP type rubber waterstop.

According to the different ways of use and installation, it can be divided into: buried waterstop, external waterstop, detachable waterstop Most of the functions (functions) of the waterstop are: the rubber waterstop is the use of the high elasticity and compression deformation characteristics of rubber, under various loads to produce elastic deformation, so as to effectively fasten and seal, prevent water leakage, water seepage and shock absorption and buffering of the building structure.

In the architectural design of general larger projects, the thermal expansion and contraction of concrete components due to the inability to pour continuously, or due to the deformation of the foundation, or due to temperature changes.

and other reasons, it is necessary to leave construction joints.

Settlement joints, deformation joints.

Hoses must be installed at these joints to prevent water leakage. Rubber waterstops are mainly used for foundation projects that are integrated with the concrete structure in the construction joints and deformation joints when the concrete is cast-in-situ, such as underground facilities, tunnel culverts, water aqueducts, dams, liquid storage structures, etc.

1. Keep the concrete interface of the fixed waterstop flat and dry, remove the scum dust and sundries at the interface before installation, and fix the waterstop strip at the determined installation site with steel nails or glue. However, the face with grouting pipe must be pressed on the interface of the original concrete.

2. When the waterstop strip is connected, the parallel lap method is adopted, and the break point shall not be left in the middle, and the waterstop strip at the junction is strengthened and fixed with steel nails, and the reserved grouting connecting pipe on the waterstop strip is sleeved into the other waterstop strip of equality and connected to the two links.

3. According to the length of the installed water-stop strip, a tee is installed at about 30 meters, and the two ends of the tee straight line are about one end inserted into the water-stop strip, one end is inserted into the grouting connecting pipe, and the other T-shaped end should be inserted into the standby grouting to prevent the use of chemical slurry to stop water when the gap leaks.

4. The grouting connecting pipe in the connected waterstop strip must be firmly bonded with the tee connector, and the grouting pipe of the installed waterstop strip must be completely unobstructed. The spare grouting pipe installed on the tee should be placed in the direction of the interior wall.

Water-stopping principle: the new and old concrete joint position is called the construction joint, which belongs to the weak link of waterproof concrete waterproofing, after increasing the waterproof steel plate, the water penetrates along the gap of the new and old concrete stubble position, and the water-stopping steel plate can no longer penetrate in, and the water-stopping steel plate plays the role of cutting off the water infiltration path.

Even if it penetrates along the gap between the waterproof steel plate and the concrete, the waterproof steel plate has a certain width, which also extends the infiltration path of the water, which can also play a waterproof role.

PVC plastic waterstop.

1 The function and principle of plastic waterstops.

Plastic waterstop is a waterproof material made of polyvinyl chloride resin and various fillers through mixing, granulation, extrusion and other processes. Should.

The product uses the elastic deformation characteristics of elastomer materials to prevent leakage and seepage in the joints of building structures, and has corrosion resistance and resistance.

It has a good durability characteristic. The plastic waterstop is mainly used for concrete pouring, which is set in the construction joint and deformation joint and the concrete as a whole.

Infrastructure works. Such as tunnels, culverts, diversion aqueducts, dams, liquid storage structures, underground facilities, etc.

2 Technical standards for plastic waterstops.

Test items.

Performance metrics. Hardness (Shore A), degrees.

65 tensile strength, mpa

12 elongation at break, %

300 tear strength, kn m

25 brittle temperature,

Hot air aging 70 72h

Tensile strength, mpa

10 elongation at break, %

3 Plastic waterstop construction method.

The plastic waterstop construction method is the same as the rubber waterstop. When pouring, the interface with the concrete should be flat and the joint part should be bonded.

In the process of pouring and burying, the concrete should be fully vibrated with appropriate force to make it well combined with the concrete to obtain the best water-stopping effect.

4 Precautions for the construction of plastic waterstops.

1) During the construction process, because there are many sharp corners of stones and steel bars in the concrete, the operation is to pay attention to avoid causing machinery to the waterstop.

Damage. 2) When positioning the plastic waterstop, it should be smooth to make the interface with the concrete, and the waterstop should not be flipped or twisted.

Corrections should be made in a timely manner.

3) When pouring the fixed waterstop, the waterstop should be prevented from deviating and affecting the waterstop effect.

4) Plastic waterstop joints can be bonded and thermally welded to ensure that the joints are firm.

5) In the process of pouring concrete, it is necessary to pay attention to full vibration to achieve the full combination of waterstop and concrete.

5 PVC plastic waterstop product type, specification and scope of application.

Code: Product Specifications.

Schematic diagram of product section.

Type 651. It is used for small and medium-sized concrete dams and workshops, tunnels, culverts, open channels, culverts, etc.

Type 652. It is used for small and medium-sized concrete dams and workshops, tunnels, culverts, open channels, culverts, etc.

Type 653. It is used for small structures and water stopping.

Type 654. It is used for large and medium-sized concrete dams.

Type 655. It is used for sluice dams, gravity dams, concrete dams, etc.

Type 861. It is used for panel rockfill dams.

The slab type is used for the panel rockfill dam body.

Design selection.

The selection of the waterstop should be determined according to the importance of the DU structure, the deformation of the deformation joint, the special water pressure, the working environment and economic factors of the waterstop.

Water stop The effect of water seepage.

The choice of waterstop material can be based on the following provisions:

a. In general, choose natural rubber waterstops;

b. When there is a weak acid or alkali corrosive medium, it is advisable to use neoprene waterstop;

c. When there is an oil medium, it is advisable to use nitrile rubber waterstop;

d. When there is a possibility of mold erosion, the mildew resistance of the waterstop should be considered, and its grade should reach level 2 and above;

e. When the use temperature is: -25 60 when the neoprene waterstop is used - 35 60 when the natural rubber waterstop is used.

40 60 choose EPDM rubber waterstop.

f. When it should be welded with waterproof board and other materials, it is advisable to choose a synthetic resin waterstop (EVA, PE, ECB, HDPE, PVC) with the same molecule.

Function: 1, stop.

The water trap must have the function of stopping water and waterproofing.

2. The waterstop is to use the characteristics of high elasticity and compression deformation of rubber glue to produce elastic deformation under various loads of DAO, so as to effectively tighten and seal, prevent water leakage, water seepage and shock absorption and buffering of the building structure.

3. In the architectural design of general larger projects, due to the inability to pour continuously, or due to the deformation of the foundation, or due to the thermal expansion and contraction of concrete components caused by temperature changes, it is necessary to leave construction joints, settlement joints, and deformation joints. Waterstops must be installed at these joints to prevent water leakage.

4. The waterstop is mainly used for foundation projects that are integrated with the concrete structure in the construction joints and deformation joints when the concrete is cast-in-situ, such as underground facilities, tunnel culverts, water aqueducts, dams, liquid storage structures, etc.

The waterstop is to use the characteristics of high elasticity and compression deformation of rubber to produce elastic deformation under various loads, so as to effectively tighten and seal, prevent water leakage, water seepage and shock absorption and buffering of building structures.

The --- of waterstop is to prevent and stop the penetration (flow) of water'diffusion) and the production and installation of the ribbon, generally used in the waterproof part of the construction of the joint or post-pouring belt or pipe answer through the wall (board).Usually it has to cross circles. It is generally made of 300 500mm wide steel or rubber sheet.

There are also ready-made rubber waterstop strips (rings) on the market**. You can choose ** according to the specific requirements of the project and the requirements of the drawings).

The rubber copy waterstop and waterstop rubber are made of natural rubber and various synthetic rubber DU as the main raw materials, mixed with various ZHI additives and fillers, DAO

After plastic refining, mixing and pressing molding, there are many varieties and specifications, including bridge type, mountain type, P type, U type, Z type, B type, T type, H type, E type, Q type, etc. It is made of natural rubber or various synthetic rubber as the main raw material, mixed with a variety of additives and fillers, and made by plasticizing, mixing, calendering and vulcanization. According to the use of the use can be classified into buried rubber waterstop and back mounted rubber waterstop.

The waterproof material has good elasticity, abrasion resistance, aging resistance and tear resistance, strong adaptability to deformation, good waterproof performance, and the temperature range is -45 -+60When the temperature exceeds 70, and the rubber waterstop is subjected to strong oxidation or erosion by organic solvents such as oil, the rubber waterstop shall not be used. Generally, it is often used in the construction of basement exterior walls and post-pouring belts.

The waterstop is mainly used for sealing and waterproofing in building deformation joints or construction joints.

There are many specifications of rubber waterstops, and the common rubber waterstops are distinguished by width and thickness: 300mm, 350mm, 400mm, and the thickness is mainly 6mm, 8mm, and 10mm.

According to the shape, the rubber waterstop is divided into: bridge type, mountain type, P type, R type, U type, Z type, B type, T type, H type, E type, Q type, etc.

Hengshui Ruijie Road and Bridge answers for you: rubber waterstop is a kind of rubber product, which is mainly used in concrete deformation joints, expansion joints and other concrete interiors, and has the ability to adapt to the expansion and deformation of concrete with the elasticity and structural form of rubber materials. The rubber waterstop is the use of the high elasticity and compression deformation of rubber to produce elastic deformation under various loads, so as to tighten and seal effectively prevent water leakage and water seepage of building components, and play a role in shock absorption and buffering, which can ensure the service life of engineering buildings.

It is mainly used in infrastructure projects, underground facilities, tunnels, sewage treatment plants, water conservancy, subway and other projects.

Rubber waterstop is the use of natural rubber and a variety of synthetic rubber as the main raw materials, mixed with a variety of additives and fillers, after plastic refining, mixing, pressing molding, its varieties and specifications are more, there are bridge type, mountain type, P type, R type, U type, Z type, B type, T type, H type, E type, Q type, etc. The waterproof material has good elasticity, abrasion resistance, aging resistance and tear resistance, strong adaptability to deformation, good waterproof performance, and the temperature range is -45 -+60. The product should not be used at temperatures above +70, as well as when there is strong oxidation or when it is attacked by organic solvents such as oils.

Classification: According to the model, it can be divided into: CB type rubber waterstop (embedded type with hole in the middle); CP type rubber waterstop (embedded intermediate non-perforated type); EB type rubber waterstop (external sticker with hole in the middle); EP type rubber waterstop (external type without holes in the middle).

According to the material, it can be divided into: natural rubber waterstop, neoprene rubber waterstop, EPDM rubber waterstop.

According to the use of the use, it can be divided into: buried rubber waterstop and back-mounted rubber waterstop (externally attached rubber waterstop), steel-edged rubber waterstop, water-swelling rubber waterstop, and flat waterstop.

Scope of application: Rubber waterstop is mainly used for foundation projects that are integrated with the concrete structure in the construction joints and deformation joints when the concrete is cast-in-situ, such as underground facilities, tunnel culverts, water aqueducts, dams, liquid storage structures, etc.

The water-swelling rubber waterstop is mainly used for foundation projects that are integrated with the concrete structure in the construction joints and deformation joints when the concrete is cast-in-situ, such as underground facilities, tunnel culverts, water aqueducts, dams, liquid storage structures, etc.

Waterstop function and use:

It is mainly used in the interior of concrete, such as: concrete deformation joints, expansion joints, etc. The waterstop mainly uses its elastic force and shrinkage performance to produce different elastic changes under different loads, so the sealing performance is very strong, which can effectively avoid water leakage and other phenomena of components, and at the same time can also absorb shocks and ensure the service life of engineering buildings.

Waterstop construction method and precautions:

1. Before pouring concrete, keep it flat at the interface, glue and fix the joints, and then pour and vibrate enough concrete to ensure that it bonds well with the concrete with the appropriate force at the water level. Water ingress effect so as not to affect the concrete shutdown.

2. Since there are many sharp stones and sharp steel bars in the concrete during the construction process, it is necessary to pay attention to the impact force of pouring and impact when pouring and placing water, so as not to penetrate into the rubber. If a crack is found, it must be repaired in time, otherwise, the joint will be deformed.

3. When placing the water stopper, please place it flat on the interface to prevent the water stop from rolling or twisting, if it is not twisted, please adjust it in time.

4. When building concrete, it must be shaken thoroughly to avoid the wrong combination of waterproof belt and concrete.

5. The joints must be firmly bonded, there are three methods, if possible, hot vulcanization can be carried out.

6. If enzymatic bacterial corrosion is likely to occur, the conditions of use such as temperature, effects of UV and ozone aging, repeated deformation, and other factors should be considered. At low temperatures, it is easy to choose EPDM rubber waterstops.