What waterproof materials are generally used for waterproofing of subway tunnels and what is the con

If it is during the construction period, you can choose, but after the construction, it is best to use the plugging king or injection slurry, which is more troublesome, and it is possible that there is a leak on this side and there is a leak, so it is necessary to judge on the spot.

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Coils, coatings, waterproofing boards are all useful, ** and so on!

Perpetual condensate dps ......Suitable for bridges, tunnels, etc.

Waterproof board... Geotextile, there should be written on this construction drawing, right?

The traditional waterproofing process of the subway tunnel is to put on a layer of geotextile first, and then add a layer of waterproof board, but it is easy to channel water with lap joints, and the construction is also more troublesome. Now there are many places that have begun to spray acrylic waterproof materials, it is mechanized construction, 3-5 seconds rapid film formation, and the construction efficiency is more than 5 times that of traditional materials. Moreover, it is integrated into a film, there is no lap joint, and there is no problem of water channeling.

The service life is also very long, and there is less maintenance cost in the later stage.

For example, Guiyang's Metro Line 2; Nanning's Metro Line 5; The underground axis tunnel project of the Nanjing Youth Olympic Games, etc., are all acrylic spray film waterproof materials. For specific construction, you can refer to some platforms on the Internet, according to the thickness of your own waterproof material and the area of the project.

Subway tunnels are generally pressed by waterproof tunnels, why pro! Hello, I am glad to answer for you<> why there are the following reasons for the general waterproof tunnel of the pro-subway tunnel: 1. The waterproof level of the underground station, entrances and exits, passages and mechanical and electrical equipment concentration sections is first-class, water seepage is not allowed, and there are no wet stains on the surface of the structure; 2. The waterproof level of the auxiliary structures such as the station air duct, the section tunnel and the connecting channel is the second level, the top is not allowed to drip leakage, and the other is not allowed to leak, and there are a small number of wet stains on the surface of the structure, and the total wet stain area is not greater than 2 of the total waterproof area, and the wet stains on any 100 waterproof area are not more than 3, and the maximum area of a single wet stain is not greater; The average leakage of water leakage in the tunnel project should not be greater than, and the leakage of any 100 waterproof area should not be greater than the waterproofing of the tunnel project. For example, metro tunnels usually require secondary waterproofing, but minor settlements are not allowed when crossing special sections such as airport runway sections.

Then we should not emphasize "prevention, drainage, blocking, and interception," but should emphasize "prevention." Prevent almost no water from coming in, so that it meets the requirements of waterproof grade 1. Hope mine can help you <>

Do you have any other questions? Destroy the stool.

Hello: The materials are mainly divided into:

1. Waterproof membrane.

1) PVC waterproofing membrane TPO, PVC, EVA, etc.

3) Rubber waterproofing membrane: EPDM, chlorinated polyethylene, etc.

4) Self-adhesive waterproofing membrane with tire, tireless, composite.

2. Waterproof coatings.

1) JS composite waterproof coating water-based, volatile, resin-based.

2) Polyurethane waterproof coatings reactive and rubber.

3) Silicone rubber waterproof coating volatile, rubber.

4) Polyurea waterproof coating volatile, rubber.

3. The waterproof sealing material car is like material.

1) Silicone sealant 2) Polysulfide sealant 3) Polyurethane sealant 4) Silicone sealant 5) Rubber waterstop 6) Metal waterstop 7) Water swelling waterstop 8) Plastic stop 9) Caulking strip.

4. Rigid waterproof material.

1) Polymer waterproof dry mortar 2) No water leakage.

5. Anti-closed ridge water admixture.

1) Waterproofing agent (powder) 2) Anti-cracking fiber.

6. Permeable waterproof material.

1) Permeable crystalline waterproof material 2) Permeable gel waterproof material.

7. Plugging materials.

1) Grouting material 2) Fast-setting plugging material 3) Pre-embedded grouting pipe.

8. Drainage materials.

1) Drainage board 2) Seepage drainage pipe.

Many people should not know that tunnels also need to be waterproofed, and tunnels need to be dug in the mountains, or built underwater, and waterproofing is especially important in these cases. In order to avoid water leakage after the construction of tunnels like "sealed pipes", high-quality waterproofing works are necessary.

The first type of product is naturally the conventional waterproof membrane, which is a flexible building material product that can be curled into a roll, which is the first barrier of waterproofing of the whole project and plays a vital role in the whole project.

In addition, the waterproofing treatment of construction joints is also a crucial part of the tunnel waterproofing project. At present, rubber waterstops, close friend defense seals, and gaskets are widely used in China to meet the needs of waterproof design in tunnel engineering construction, and their high elasticity can produce elastic deformation under load, and the volume expands to form a strong sealing "protective layer" after encountering water. At the same time, the waterstop also has a damping and cushioning effect.

Rubber waterstops, sealing strips, and gaskets can not only prevent water from entering the building from the outside of the building, but also prevent water seepage from the inside of the building, and can achieve "two-way barrier".

As a service provider of Pei Huai building materials system, in 2021, Fortress Co., Ltd. officially joined hands with Keshun Co., Ltd., a leading enterprise in the waterproof industry. The two parties will further provide high-quality and high-performance products for construction projects and provide customers with better products and services through industrial synergies.

Hello: The materials are mainly divided into:

1. Waterproof membrane.

1) PVC waterproofing membrane TPO, PVC, EVA, etc.

4) Self-adhesive waterproofing membrane with tire, tireless, composite.

2. Waterproof coatings.

1) JS composite waterproof coating water-based, volatile, resin-based.

2) Polyurethane waterproof coatings reactive and rubber.

3) Silicone rubber waterproof coating volatile, rubber.

4) Polyurea waterproof coating volatile, rubber.

3. Waterproof sealing material.

1) Silicone sealant 2) Polysulfide sealant 3) Polyurethane sealant 4) Silicone sealant 5) Rubber waterstop 6) Metal waterstop 7) Expansion waterstop when exposed to water 8) Plastic stopper 9) Caulking strip.

4. Rigid waterproof material.

1) Polymer waterproof dry mortar 2) No water leakage.

5. Waterproof external admixture.

1) Waterproofing agent (powder) 2) Anti-cracking fiber.

6. Permeable waterproof material.

1) Permeable crystalline waterproofing material 2) Permeable gel waterproofing material.

7. Plugging materials.

1) Grouting material 2) Fast-setting plugging material 3) Pre-embedded grouting pipe.

8. Drainage materials.

1) Drainage board 2) Seepage drainage pipe.

Tunnel moisture needs to be waterproofed, choose waterproof materials to be cautious, let's take a look at the tunnel waterproof materials, tunnel waterproofing practices.

What are the waterproofing materials for tunnels.

1. FYT-1 improved waterproof Huizhihu coating (HC-201) is a kind of polymer composite material, which is a national key science and technology promotion project, and has reached the leading level of similar products by experts organized by national authoritative departments. The product has been tested by the Highway Engineering Testing Center of the Ministry of Communications, and all technical indicators meet the requirements of JT T575-2005 standard.

2. FYT-2 polymer bridge deck waterproof coating (H-C-202) can be used alone, or it can be used in combination with FYT-1 improved waterproof coating for bridge deck waterproofing, which can prevent steel corrosion caused by water leakage of concrete bridge deck and improve the service life of the bridge body.

3. Self-adhesive polymer modified asphalt waterproofing membrane.

The PY self-adhesive polymer modified asphalt polyester tire waterproofing membrane is a high-speed tunnel waterproofing material based on filament polyester felt, and a waterproof material for railway tunnels with tackifying polymer modified asphalt as the dipping material, and the upper surface is covered with polyethylene film, fine sand, leaf rock, aluminum foil or isolation film as the waterproof material for the isolation layer of the construction tunnel.

4. Fast response sticky strength cross Mo self-adhesive waterproof membrane.

Scope of application: It is mainly used for non-exposed engineering ignition, basement waterproof engineering, as well as open-cut subway, tunnel, canal and other engineering waterproofing, especially suitable for projects that are not allowed to use open flames.

What are the waterproofing practices for tunnels.

1) Watertight waterproofing, starting from the surrounding rock, structure and additional waterproof layer, reflecting the drainage based on prevention, also known as all-inclusive waterproofing;

2) Drain type or drainage self-draining type, starting from drainage and drainage, reflecting the drainage-based, also known as semi-package waterproof;

3) Control type anti-drainage combined with anti-drainage.

The main types of tunnel drainage prevention and drainage structure are different lining types: composite lining drainage structure, single-layer lining drainage structure, partition wall drainage structure in arch tunnel, and open hole drainage prevention structure.

Precautions for tunnel waterproofing construction.

1) Before the waterproof board is laid, the steel bar head and anchor head at the surface of the shotcrete are cut off first, and then smoothed with a hand-held grinder, and the uneven parts should be repaired and sprayed to make the concrete surface smooth, and there is local water seepage, which should be treated.

2) The waterproof board is laid in the circumferential direction, and the welding process and the fixing process should be closely coordinated, generally welded first, and then fixed.

3) The lap width of the waterproof board laying is 10 cm, the welding width is not less than 2 cm, the missing welding, false welding should be repaired, if there is scorching, welding penetration, the same waterproof board welding paste should be covered or handled according to the instructions of the supervising engineer.

4) The fixed waterproof board is welded by glue and heat, and the waterproof layer between the rubber pad and the rubber pad shall not be tightened, and the board surface and shotcrete should be closely attached.

1. Waterproofing membrane.

The waterproofing membrane is made of organic polymer liquid material and inorganic powder, which can form a high-strength and tough waterproof coating film after coating. Often used in building walls, tunnels, highways, landfills and other areas, soft texture, can be curled flexible building materials products, effectively resist underground seepage or external rainwater defense effect. It is a popular tunnel waterproofing material in the market.

2. Rigid waterproof material.

The raw materials of rigid waterproof materials are mainly cement and sand, and a small amount of admixtures and polymers are mixed into the production to change the pore characteristics to a certain extent, inhibit or reduce the porosity, and increase the contact surface between the interfaces. Reduce the gap between particles and formulate concrete waterproof materials with good permeability resistance.

3. Flexible waterproof material.

The flexible tunnel waterproof material is mainly made of rigid tunnel waterproof materials such as waterproof mortar and waterproof concrete, which has good stretchability and is suitable for use in areas with large changes in the shape of the mechanism, but the flexible waterproof material has higher requirements for the construction technology level of the team, so it is used less.

Second, which is the best waterproof material for the tunnel?

Waterproofing membrane is a more commonly selected waterproof material, generally used for the waterproof layer of the first layer of the tunnel, and the rigid waterproof material has good impermeability, so it is often used as the surface layer of tunnel waterproofing, and is very strong. The flexible waterproof material is suitable for waterproofing work with large changes in construction shape, and has good stretchability.

Hello, in the construction of railways, highways and other tunnels, VA waterproof board is used as the main waterproof material, and concave-convex waterproof board is mainly used as hydrophobic and drainage, so in the construction of water-rich tunnels, concave-convex waterproof board is mainly used. However, tunnels with less water seepage in the surrounding rock and initial support are rarely used.

Waterproofing membrane (PVC waterproofing membrane) PVC waterproofing membrane mainly uses polyvinyl chloride as the main raw material, supplemented by heat stabilizers, reinforcing agents, antioxidants, etc., through high-speed mixing, and then extruded by twin-screw extruder and mold, three-roller machine, and cooled to obtain medium and high-grade waterproof membrane. PVC waterproofing membrane has high tensile strength 、..

Waterproofing membrane EVA waterproofing membrane is made of high-quality ethylene-vinyl acetate copolymer as the main raw material, and antibacterial agents are specially added to the material to prevent microbial erosion. EVA waterproofing membrane has high tear strength, good puncture resistance, waterproof impermeability, and hydrolysis resistance, and is widely used in tunnels, subways, highways, etc