What is the principle of steel plate waterstop? What is the difference between a waterstop steel pla

The steel plate waterstop is to pre-bury a 300mmx3mm steel plate when pouring the lower layer of concrete, of which 10-15cm of the upper part is exposed outside, and the steel plate of this part is poured into it together when pouring concrete next time, so as to prevent the outside pressure water from penetrating in.

Generally, the steel plate waterstop is made of cold-rolled plate as the base metal, because the thickness of the cold plate can be uniform, and 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 3 meters long or 6 meters long, which is generally three meters good for transportation. The waterproof steel plate has high requirements for the welded joints, and there can be no leakage points, which affects the waterproof performance.

Water-stopping steel plate: The "opening tooth" of the water-stopping steel plate faces the head-on, and the steel plate is tightly separated from the concrete, supplemented by the figure-eight shape of the steel plate, and it is difficult for open water to penetrate from the steel plate along the construction joint.

Waterstop: The waterstop is a strip that avoids preventing water soaking and manufactures a device, with a width of 200-350, selected according to the design, appropriately extending the seepage diameter, partially or completely buried in the concrete during the concrete pouring process, with a certain strength and toughness, and its strength and toughness are between the waterstop strip and the waterproof steel plate.

The price of the water-stopping steel plate is higher, the construction difficulty is greater, the water-stopping effect is good, and it is generally suitable for the vertical and degree construction joints below the open water level, because its stiffness is too large, it is not suitable for use in the part with large deformation; The price, performance, and construction difficulty of the waterstop are moderate, and the application range is wide, and because of its large toughness, it is more suitable for use in the parts with settlement deformation requirements with large deformation. [Click here to get the latest in 2022**].

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Function: The purpose of waterproof steel plate waterproof construction is to select the waterproof waterproof steel plate that meets the quality standards, to achieve the purpose of waterproofing through scientific, reasonable and economical design, and carefully organize technical forces to carry out construction on the basement, wall and ground, wall, roof and many other parts of the building waterproof construction, and improve the repair and maintenance management system, so that the building or structure can prevent the leakage of rainwater, production and domestic water and the erosion of groundwater within the design durability period, and ensure that the building structure, The interior space is not polluted, providing a comfortable and safe living space environment for people.

Principle: The steel plate is absolutely not leaking, and the concrete is also not leaking, and the water can only seep along the line of the contact surface between the steel plate and the concrete.

1.The line of the contact surface between the steel plate and the concrete is artificially made, very long, even if there are capillaries, the path is also very long, and at the same time, the resistance is also very large. Therefore, the steel plate waterstop should also have a certain width.

2.There is a very good adhesion between the clean steel plate and the weak alkaline concrete, and the development of reinforced concrete structure for hundreds of years is the most powerful proof, even if there are some defects in the construction process of installing the steel plate waterstop, the capillary channel is often blocked, so the defects in the construction process will not affect the waterproof effect of the steel plate waterstop in the project.

The principle of waterproof steel plate is: the position of the joint of the old and new concrete 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 when it encounters the waterproof steel plate and can not penetrate inward, and the waterproof steel plate plays the role of cutting off the water infiltration path. When constructing the bottom plate reinforcement, the water-stopping steel plate bottom plate reinforcement needs to be effectively connected, and the door-shaped support can be fixed on the bottom plate reinforcement top by adopting 12 steel bars, and the door-shaped frame and the water-stopping steel plate adopt welding, and the specific steps are as follows:

First, two 12 steel bars are fixed perpendicular to the bottom plate, the water-stopping steel plate is placed in the middle of the two steel bars, penetrates the water-stopping steel plate through a horizontal steel bar, and the water-stopping ring is welded on the horizontal steel bar, and the water-stopping ring and the water-stop steel plate are fully welded and connected. The width of the waterproof steel plate is not less than 400mm, and it is buried in the concrete of the bottom plate 200mm respectively, the first pouring concrete should be higher than the upper surface of the bottom plate more than 200mm, and the thickness of the steel plate is not less than 3mm, in order to ensure that the steel plate has a certain stiffness during construction, it is best to fold the edge of 50mm on both sides of the long direction of the steel plate, and fold the edge of about 30 degrees;

Waterstops and waterstops are both waterstop products in building accessories, and the main differences are:

The shape is different, the water-stop bandwidth is thick, and the water-stop strip is slender.

The use position is different: the waterstop is used in the deformation joints and expansion joints of concrete pouring, and the waterstop strips are used in the construction joints and expands when exposed to water.

The water-stop steel plate refers to the waterstop made of steel plate.

The thickness of the water-stopping steel plate is ordinary 3, the width is 200, and the length is generally processed into 3 meters long or 6 meters long, and it is generally three meters good for transportation. During construction, try your best to ensure that the water-stopping steel plate is on the center line of the wall; The welding between the two steel plates should be plump and double-sided welding, and the lap of the steel plate should not be less than 200mm. The disposal of the corner of the wall usually adopts the bending of the whole steel plate, T-shaped welding, 7-shaped welding, etc.

The support welding of the waterproof steel plate can be welded on the main reinforcement with small steel bars; When the waterproof steel plate passes through the column stirrups, the stirrups that pass through can be broken and manufactured into a tooth stirrup, which is welded on the steel plate.

Analysis of advantages and disadvantages: the joint part of the steel plate waterstop is required to be welded, and the effect is of course very good, but the cost is much higher, and the construction speed is relatively slow. The standard request, the use of water-stopping steel plate shear wall, the wall thickness should not be less than 250, the net interval between the water-stop steel plate and the steel bar is:

Wall thickness 2 - outer maintenance layer thickness 50 - wall two-way steel bar diameter; When the wall thickness is 250, 250 2-50-30=45. The interval between the waterproof steel plate and the wall is small, and the concrete is easy to leak vibration in this part during construction, forming a honeycomb hole. Therefore, when using the waterproof steel plate, the vibration must be enhanced at the construction joint.

The thin part of this water stop measure is the lap part and the 90° corner part. It is extremely difficult to control the weld at the 90° corner of the steel plate, and it is easy to form a leakage point. The welding construction of the corner part of the steel plate should be controlled as the key part of the process.

The waterstop has additional steel bar fixing method, special fixture fixing method, lead wire and formwork fixing method, etc. If perforation is required, it can only be used in the edge installation area of the waterstop, and no other parts should be damaged. If on-site bonding is required, electric heating plate vulcanization bonding or cold bonding (rubber waterstop) or welding (plastic waterstop) can be used.

During the construction of the waterstop, it should not be exposed to the open air for a long time, avoid rain, and do not come into contact with polluting chemicals; In transportation and construction, avoid mechanical and steel damage to the waterstop; During the construction process, the waterstop must be firmly fixed to prevent displacement when pouring concrete, and ensure the correct position of the waterstop in the concrete;

Analysis of advantages and disadvantages: there are many sharp corners of stones and sharp steel heads in concrete, because the tear strength of plastic and rubber is 3 5 times lower than the tensile strength, once the waterstop is punctured or torn, there is no need for great external force, the crack will expand, so in the waterstop positioning and concrete pouring process, we should pay attention to the positioning method and pouring pressure, so as not to puncture the waterstop and affect the waterstop effect. When pouring concrete, because the waterstop is soft for rubber products, it is easy to deform, not straight, and the upper and lower widths are not easy to control.

The waterproof steel plate used in the project has played an indispensable role in the waterproof control of our settlement joints, which is a posture that can not be opened by a husband and a woman, and when pouring concrete in a large area in the project, it is always impossible to form a one-time type, and the time of two concrete pouring is different, so there is a construction joint this product, it is precisely this point that is the weakest place in the waterproof link, at this time there must be a medium to achieve good adhesion of concrete on both sides, and this time can only be supported by the waterproof steel plateThe water-stopping steel plate acts as a medium connecting the old and new concrete, so that it is easy to strengthen between the concrete, so that the effect of water-stopping will not be too bad, and the settlement joint will not become fragile due to weathering.

Although the water-stopping steel plate used in the project is obvious, but improper use will affect the water-stopping performance of the water-stopping steel plate.

The waterproof steel plate has made a very great contribution to the waterproofing of our building, but we are not recommended to weld in rain, snow, and fog during construction, these kinds of weather will increase the humidity in the air, and the weld will be mixed with a certain amount of water vapor when welding, so that the quality of welding will be reduced, and the connection between the steel plates will not be firm.

When installing this step, try to lengthen the steel plate, which can reduce the amount of welding between the steel plates in the later stage. The specification of the commonly used waterproof steel plate on the market is 3 meters long, and the length of the waterproof steel plate can be customized according to the engineering requirements to facilitate construction. After the installation of the waterproof steel plate, it is difficult to weld in some connected places, and skilled welders should be arranged to weld at this time.

There is another thing we have to say about the waterproof steel plate, that is, the waterproof steel plate is relatively easy to rust, like the rainy day, snow day and foggy day I mentioned above, it is easy to make the waterproof steel plate rust; The rusty waterproof steel plate is troublesome in the post-processing, and if it is more serious, it cannot be used for normal construction. Therefore, it is necessary to choose a suitable placement environment when storing, otherwise the construction period will be delayed because of the rust of the waterproof steel plate, but the gain will outweigh the loss!

If the construction is in a humid area, it is recommended to use galvanized waterproof steel plate for the project, the galvanized waterproof steel plate is the waterproof steel plate after the galvanizing process, called the galvanized waterproof steel plate, the surface is a kind of red, forming a protective film on the surface of the product, isolating air and water, galvanized waterproof steel plate will also have good waterproof property in the humid environment for a long time, and the service life of the product can meet the requirements of the project, so that the project becomes indestructible and improves the overall drainage effect.

They are all water-stopping, and the materials are different.

Hello, what is the difference between the waterstop strip, the waterstop steel plate and the waterstop?

The waterstop strip can be used for underground buildings without water, the waterproof steel plate can be used for buildings with water such as pools, and the rubber waterstop can be used for vertical waterstop and expansion joints, settlement joints and other places. The waterstop strip is a round long strip, the construction is simple, but the water-stopping effect is not as good as the water-stopping belt and the water-stopping steel plate, the construction unit often likes to use the water-stop strip for convenience, and when the foundation pouring is completed, it can be pressed on the surface of the wall concrete pouring. The waterstop is generally available with a type of waterstop, the width varies from 200-350, according to the design selection, the waterstop effect is better, the seepage diameter is extended, the disadvantage is that when the concrete is poured, because the waterstop is a rubber product is soft, easy to deform, not straight, the upper and lower width is not easy to control, if the lead wire is tied to the steel bar, damage the waterstop, so the construction unit generally feels troublesome and does not like to use.

The effect of the waterproof steel plate is also better, the installation is more convenient, and it is more straight. Hope it helps, thank you.

Stop water to steel plate.

It is mainly used in the concrete wall construction joint source, when pouring the lower layer of concrete, the waterproof steel plate is pre-embedded, the "opening" of the waterproof steel plate is towards the "water surface" of the building, half is exposed in the concrete and half is exposed, and when the concrete is poured next time, the remaining waterproof steel plate is directly poured into it together, so that the waterproof steel plate and the concrete become one, and the groundwater infiltration can be prevented, and the purpose of stopping water is played.

When the waterproof steel plate is used, it is necessary to ensure that the center line and the construction joint coincide, half of which is in the upper layer of concrete and half is in the lower layer of concrete, so that the ideal water-stopping effect can be achieved. If the gap is too long and lap is required, lap should be carried out by welding, and the lap length should be more than 5cm to ensure the water-stopping effect of the water-stopping steel plate.

Regarding the steel plate products, Hengyuan Shui Baijin Rubber Products is very well understood. In construction, due to the influence of various factors, many times the construction joint of a certain length and depth will be left, and when the position of this joint is below the groundwater line, it is easy to produce water seepage. At this time, it is necessary to carry out technical treatment of this seam.

There are many ways to deal with it, such as setting up waterproof materials such as rubber waterstop belts and waterproof strips that expand when exposed to water, among which the more common method is to set up waterproof steel plates.

That is, when pouring the lower layer of concrete, the steel plate of 300 * 3 is pre-buried, of which the upper part of 10-15cm is exposed outside, and the steel plate of this part is poured into it together when the concrete is poured next time, so as to prevent the outside pressure water from penetrating, and the water stop steel plate is a leakage control measure, and the thickness of the steel plate waterstop is generally 2mm thick and 3mm thick.

Due to the particularity of its material, the waterproof steel plate can not be bent casually, and because of its relatively high cost, it is suitable for the construction of the project that is not large and the amount of use is not much.