How to make concrete pipes, how are concrete pipes made?

The production of concrete pipes is very simple, first of all, there must be the following equipment: 1 steel mold - according to the type of pipe you want to produce. 2. Concrete centrifuge --- this is a necessary equipment for the production of concrete pipes.

There is also a concrete mixer. The production method is to mix out the concrete that needs to be marked with a concrete mixer and then load it into the mold, and the mold should be brushed with a release agent first.

After closing the mold, the centrifuge is lifted and rotated, so that the concrete is attached to the mold wall by centrifugal force, and the wall thickness of the pipe should be controlled according to the requirements of the pipe when loading concrete, which requires certain experience and practice. When centrifuging, the excess concrete in the pipe wall should be scraped off with a pressure bar. Finally, it is the maintenance and removal of the mold, and the conditional use of steam in the kiln pit can also be naturally cured, but the relative removal time is longer.

When removing the mold, you should tap the mold, and if the mold release agent is evenly brushed, it is easy to remove. I don't know if you're satisfied.

The following equipment is required to make concrete pipes:

1. Steel mold.

Prepare according to the specifications of the concrete pipe you want to produce.

2. Concrete centrifuge.

This is an essential equipment for the production of concrete pipes.

3. Concrete mixer.

Here's how to make it:

1. Evenly brush the release agent on the inner wall of the mold;

2. Lift the centrifuge after mold clamping;

3；The concrete mixer is used to mix out the concrete with qualified ratio according to the required number and load it into the mold, the centrifuge is started to rotate the mold at high speed, and the concrete in the mold is attached to the mold wall by centrifugal force;

4. When loading concrete, you need to have a certain amount of experience, and you should control the amount of concrete according to the wall thickness required by the pipe;

5. When centrifuging, the excess concrete in the pipe wall should be scraped off with a pressure rod;

6. Maintenance, if possible, it can be steamed in the kiln pit with steam, which can shorten the production cycle and can also be naturally cured, but the relative time is longer, but the production cost can be reduced;

7. After the curing period, the mold can be removed. When removing the mold, the mold should be tapped with a wooden hammer to remove the mold. If the release agent is evenly brushed, it will be easy to remove. Therefore, brushing the release agent is a more critical process.

The following equipment is required to make concrete pipes:

1. The steel mold is prepared according to the specifications of the concrete pipe to be produced.

2. Concrete centrifuge, which is an essential equipment for the production of concrete pipes.

3. Concrete mixer.

Here's how to make it:

1. Evenly brush the release agent on the inner wall of the mold;

2. Lift the centrifuge after mold clamping;

3. Use a concrete mixer to mix out the qualified concrete according to the required number and load it into the mold, start the centrifuge to make the mold rotate at high speed, and the concrete in the mold is attached to the mold wall by centrifugal force.

4. A certain amount of experience is required when loading concrete, and the amount of concrete tremor should be controlled according to the wall thickness required by the pipe.

5. When centrifuging, the excess concrete in the pipe wall should be scraped off with a pressure rod;

6. Maintenance, if possible, it can be steamed in the kiln pit with steam, which can shorten the production cycle and can also be naturally cured, but the relative time is longer, but the production cost can be reduced;

7. After the curing period, the mold can be removed. When removing the mold, the mold should be tapped with a wooden hammer to remove the mold. If the release agent is evenly brushed, it will be easy to remove. Therefore, brushing and applying the release agent is a more critical process.

According to the different inner diameters of concrete pipes, they can be divided into small-diameter pipes (inner diameter below 400 mm), medium-diameter pipes (400 1400 mm) and large-diameter pipes (more than 1400 mm).

According to the different water pressure capacity of the pipe, it can be divided into low-pressure pipe and pressure pipe2 megapascals, etc. Compared with steel pipes, concrete pipes can be divided into flat pipes, socket pipes and tongue-and-groove pipes according to the different types of pipe joints.

Its interface forms include cement mortar wiping interface, steel wire mesh cement mortar wiping interface type, cement mortar socket and rubber ring socket.

There are centrifugal method, vibration method, rolling method, vacuum operation method and the method of rolling, centrifugation and vibration combined action. In order to improve the performance of concrete pipes, China and many other countries have developed more prestressed concrete pressure pipes.

The tubes are equipped with longitudinal and circumferential prestressed reinforcement and therefore have a high resistance to cracking and impermeability. In the 80s, China and some other countries developed self-stressed reinforced concrete sheltered clump soil pipes, the main feature of which is the use of self-stressed cement in the hardening process of expansion to generate prestress, simplifying the manufacturing process.

Compared with steel pipes, concrete pipes can save a lot of steel, prolong the service life, and have less investment in plant construction, easy to lay and install, and have been widely used in factories, mines, oil fields, ports, urban construction and farmland water conservancy projects.

Summary. 1.Flat foundation pipe foundation, flat foundation and pipe seat are poured in two times.

2.A settlement joint is set every 20m for the concrete foundation, and the settlement joint is filled with asphalt wadding.

3.The concrete is poured in a certain order and direction, and is tamped with a plug-in vibrating rod. Vibrating should meet the following requirements: (1) the moving spacing should not exceed the times of the radius of the vibrating rod; Hold with the base edge.

Highway concrete pipe foundation practice.

1.The flat foundation of the pipeline is reconstructed, the flat foundation and the pipe seat are poured in two times. 2.

A settlement joint is set every 20m of the concrete foundation, and the settlement joint is filled with asphalt Ma Wu Jing flocculent. 3.The concrete is poured in a certain order and direction, and is tamped with a plug-in vibrating rod.

Vibrating should meet the following requirements: (1) the moving spacing should not exceed the times of the radius of the vibrating rod; Maintain the edge with the cavity of the cautious foundation.

Construction plan.

There are three ways:

1.Centrifugal tube making.

2.Hanging roller tubes.

3.Mandrel vibrate.

Centrifugal pipe: The cement pipe is made of plastic concrete, and the pipe wall structure is layered after molding, which affects the load resistance of the concrete; The concrete grade is usually C30, and C40 can also be achieved, but the concrete strength of the nozzle is lower than that of the pipe body, which is not suitable for pipe jacking; When forming, the pipe mold rotates horizontally on the centrifuge at high speed, and the steel mesh moves accordingly, and there will be two situations that affect the service life of the pipe

1. When the weld joints of the steel mesh are not firm, there will be running ribs and leaking ribs, so that the pipe body will be in a state of no ribs;

2. It is difficult to center the reinforcement mesh after forming, and the reinforcement mesh is eccentric, that is, the protective layer of the reinforcement mesh is uneven; This process requires a large number of molds to ensure the output, the size of each mold is biased, and the open mold will also be deformed for a long time to be disassembled and used, so the roundness, the verticality of the nozzle, the diameter of the pipe and the size of the pipe length are greatly deviated, which affects the installation quality of the project, and the leakage will lead to the subsidence of the road surface, causing pollution to the soil and groundwater on both sides of the pipeline;

Hanging roller pipe: the cement pipe is made of dry and hard concrete, the concrete structure of the pipe wall is uniform, and the load resistance is good; Concrete grades are usually C30, C40; The noise during molding is reduced compared with the centrifugal process, and the environment at the operation site is cleaner than that of the centrifugal process; The disadvantage is that when making small-diameter pipes, the wall thickness must be increased to meet the impermeability requirements; Some other disadvantages of the centrifugal process are also present in the hanging roll process.

Mandrel vibration: cement pipe this process uses semi-dry hard concrete, vertical cloth inner mold vibration and radial extrusion molding, through the adjustment of the vibration force and amplitude of the inner mold during molding, the best vibration force compacts the concrete, so as to obtain C50 high-strength pipe concrete, so that the anti-load capacity and impermeability of the pipeline are significantly enhanced compared with the centrifugal and hanging roller process. At the same time, the protective layer of the concrete pipe reinforcement mesh of this process is uniform, and there will be no centrifugal and suspension roller process reinforcement mesh displacement, jumping ribs, parallel ribs, scattered ribs, etc., which ensures the service life of the pipe for 50 years.

Prefabricated, plain concrete, and reinforced concrete.

Usually used for farmland irrigation well cement pipes, this way out.