Where is the rubber inflatable core mold for bridges?

Bridge rubber inflatable core mold is also called rubber airbag, airbag inner mold, bridge inflatable core mold is a kind of bridge rubber inflatable core mold that can expand and contract, used to form a cavity of concrete components, when manufacturing hollow components, put it in the middle, and fill with compressed air, bridge rubber inflatable core mold is contracted, and the capsule can be extracted from the cavity. It is easy to use, economical and durable, uninflated can shrink softly, folded and curled arbitrarily, and has enough strength to withstand the pressure of concrete after the bridge rubber inflatable core mold, which is incomparable to any traditional rigid formwork.

It is suitable for drilling holes in reinforced concrete components, including piles, roof trusses, roof panel columns, beams, construction projects, and water conservancy projects (docks, slipways, docks). The construction practice proves that the capsule drilling process equipment is simple, not only saves materials, but also has the characteristics of changeable shapes, and can be formed into round, oval, rectangular, arched, octagonal, trapezoidal and other pipes. It can also be made into straight holes, variable cross-section holes, etc., which can make the building structure lighter, thin-walled hollow, and change the performance of concrete and continue to use rigid formwork.

The special inner mold for rubber inflatable bridges is generally produced by professional bridge rubber factories.

This kind of rubber inner mold has the advantages of many cycles, low cost, etc., but in the actual use process, it is easy to cause the inner mold to float, and the thickness of the beam plate roof can not be guaranteed, so it is basically not allowed to be used in some key projects in recent years, but in the vast majority of construction, the rubber inner mold is still the best inner mold of prefabricated plate beams.

If you have a need for rubber inner mold, you can contact me, because I am a professional designer of steel formwork, and there are still more resources in this area.

Bridge prefabricated inflatable inner mold, also known as bridge inflatable core mold, it is a kind of airbag bag that can be expanded and contracted, used to form a cavity of concrete components, when manufacturing hollow components, the bridge airbag inner membrane is put into the middle, and filled with compressed air, when the concrete is solidified, the compressed air in the bag is released, the bridge airbag inner mold will shrink, and we can extract the rubber airbag inner mold from the cavity. It is a material made of neoprene, natural rubber and nylon cloth, and then made into a rubber inflatable core mold by vulcanization process. It has good swelling strength, elasticity and flexibility, high temperature resistance and good detachment performance, and the bridge prefabricated inflatable inner mold also has good aging resistance, wear resistance, long service life and other characteristics, replacing the traditional steel mold wood mold.

I don't know if you're looking for this kind of mandrel inner mold.

A Open the intake valve to inflat, and use the pressure gauge to control and monitor the air pressure when inflating.

b When the air pressure reaches the working pressure, close the inlet valve.

c. The special-shaped mandrel should be inflated alternately until the working pressure is reached.

d Note: Do not overpressure when inflating. A in the vibrating concrete when the mandrel will float, so it must be fixed up, down, left and right, generally 250mm mandrel stirrup spacing is 80cm, if the diameter increases, the fixed spacing is reduced accordingly.

B pouring concrete method and solid components are basically the same, pay attention to the use of high-frequency insertion or vibrating rod from both sides of the vibrating rod at the same time, in order to prevent the mandrel from moving left and right, the end of the vibrating rod is best not to touch the mandrel. When the concrete is finally set, open the valve to deflate, and the core mold can be extracted, and the time can be determined according to the cement number.

Chunsheng rubber and plastic

Here's how:

1. Entering the mold. a. Evenly apply the release agent on the inner and outer surface of the airbag.

b. Use rope traction to penetrate the inner mold of the airbag into the steel cage with concrete at the bottom, and place the inflatable nozzle outside.

2. Inflatable. a. Open the inlet valve to inflat, and use the pressure gauge to control and monitor the air pressure when inflating (the pressure gauge is placed vertically).

b. When the air pressure reaches the working pressure, close the inlet valve. (See below for details of the airbag pressure gauge).

c. The inner mold of the special-shaped airbag should be inflated alternately until the use pressure is reached.

d. Pay attention to the overpressure of inflation.

The bridge rubber inflatable mandrel uses air pressure.

Diameter (mm) Inflation pressure (mpa).

3. Fixing and pouring concrete.

A, in the vibrating concrete when the airbag inner mold will float, therefore, must be up, down, left, right to be fixed, generally 250mm airbag inner mold stirrup spacing is 80mm, such as the diameter increases, the spacing is reduced accordingly.

b. The method of pouring concrete is basically the same as that of solid components, and attention should be paid to the use of high-frequency insertion or vibrating rod from both sides at the same time to prevent the displacement of the inner mold of the airbag from left and right. Do not touch the inner mold of the balloon at the end of the vibrator.

4. Mold removal. When the concrete is initially set, open the valve to deflat, the airbag inner mold can be withdrawn, and the mold removal time can be determined according to the cement number.

5. Flush the airbag and test the pressure.

1. Reduce the construction cost. In the past, steel mold, wood mold and bamboo mold were used when the bridge slab was poured, but the cost was relatively high, the number of use was relatively small, the cost of rubber core mold (inflatable core mold) was low, and it could be reused many times, and gradually replaced the previous product;

2. Easy to use. Place the mandrel in the reinforcement cage with the longitudinal seam facing upward, inflate to the specified pressure, and close the valve. To avoid the floating of the concrete, the upper, lower, left and right must be fixed according to the construction process, and the screw is pressurized with the template to overcome the floating.

The pouring concrete uses a high-frequency plug-in vibrator, which vibrates at the same time from both sides to prevent the mandrel from shifting left and right, and the end of the vibrator cannot touch the mandrel to avoid air leakage. After the initial setting of the concrete, the core mold can be extracted and demoulded.

3. Easy to store. Rinse the rubber inflatable mandrel with water after use, and place it in a cool, ventilated and dry place when not in use, and do not touch chemicals such as oil, acid, and alkali.

Hebei Dacheng rubber bridge inflatable rubber core mold, is made of rubber and fiber reinforcing layer vulcanization and products, has high compressive strength, elasticity and air tightness, after filling with compressed air, can replace the original wooden mold, bamboo mold, steel mold, can be reused many times, is a kind of concrete products to reduce costs and speed up the construction progress of the supporting products.

Bridge inflatable core film, also known as concrete prefabricated hollow slab rubber inflatable core mold, inflatable rubber core mold, inflatable core mold, airbag inner mold, rubber airbag. It is mainly used for the pouring and forming engineering of concrete pre-tensioning and post-tensioning beams of highway bridges. It is also used in culvert sewage projects.

Bridge inflatable core mold is made of rubber and fiber reinforcing layer vulcanization and products, with high tensile strength, elasticity and air tightness, after filling with compressed air, can replace the original wooden mold, bamboo mold, steel mold, can be reused many times, is a kind of concrete products to reduce costs and speed up the construction progress of the supporting products.

27. How to use rubber inflatable mandrels.

1. Rubber inflatable core mold into the mold.

aApply the release agent evenly on the surface of the rubber inflatable mandrel.

B. use rope traction to penetrate the rubber inflatable mandrel into the steel cage with concrete at the bottom, and make the rubber inflatable mandrel inflatable nozzle be placed outside.

2. Inflatable. a. Open the intake valve of the rubber inflatable mandrel to inflat. When inflating, the air pressure is monitored with a pressure gauge control.

b When the air pressure reaches the use air pressure, close the intake valve.

c. The special-shaped rubber inflatable mandrel should be inflated alternately until the air pressure is reached.

d. Note: Do not overpressure when using.

3. Fixing and pouring concrete.

A in the tamping of concrete rubber inflatable mandrel will float, therefore, must be fixed up and down, left and right, generally diameter of 250mm mandrel stirrup spacing of 80cm, such as the diameter increases, the spacing is reduced accordingly. 96

b. The method of pouring concrete is basically the same as that of the core construction, pay attention to the use of high-frequency insertion or tamping rod from both sides of the simultaneous tamping to prevent the rubber inflatable mandrel from grinding and displacement. It is best not to touch the mandrel at the end of the vibrator.

4. Mold removal. When the concrete is initially set, open the valve to deflat, the rubber inflatable core mold can be extracted, and the mold removal time can be determined according to the cement number. kbx

5. Rinse the inflatable core mold of the oak hail core glue and test the water. Please take off it for storage so that the rubber inflatable mandrel can be reused. yey

An inflatable rubber mandrel is a type of cylindrical bag that expands and contracts to form cavities for concrete components.