Construction process of post pouring belt 20

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1. In order to ensure the accuracy and aesthetics of the post-pouring belt, wood and steel wire mesh will be added to the post-pouring belt during on-site construction. But before on-site construction, it is necessary to remove and remove all the wood squares and steel wire meshes on both sides of the post-pouring belt, and then chisel the slurry and concrete garbage in the post-pouring belt, and chisel the straight beam plate, and only after clearing can the construction of the next process be carried out.

2. Use a long wire brush to remove rust and straighten all the steel bars on site. Rinse the steel bars in the pouring belt with a water hose until there is no rust residue. After all the steel bars are rusted, the bent steel bars are straightened one by one.

If the stressed steel bar in the beam plate should be repaired and lapped according to the construction specifications to ensure the stability of the beam plate.

3. The treated steel bar should be accepted by the relevant units before it can be poured, pay attention to the steel bar after rusting and washing, but before the concrete pouring, it is also necessary to rinse the post-pouring belt again to avoid the steel bar rusting again.

After the first pouring of the post-pouring belt, corresponding protective measures should be adopted, such as covering the top and adding a fence, etc., to prevent foreign objects in the joints, or the steel bars from being polluted and deformed. And the beam plate on both sides of the post-pouring belt is not poured, do not dismantle, only after the pouring belt is poured after the concrete reaches 85% of the strength, can be dismantled, after demolition, it is necessary to pay attention to observation, and do a good job of maintenance work in time.

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1. The construction process of the post-pouring belt: dismantling, cleaning up the debris of the post-pouring belt, steel bar rust removal, shaping, binding or repair welding, formwork support, supervision and acceptance, pouring concrete.

2. Construction method of post-pouring belt: dismantle and clean up post-pouring belt debris. During the on-site construction, in order to fight the stool to pursue the accuracy and perception of the retention position of the post-pouring belt, the steel wire mesh and the wood square are on both sides of the post-pouring belt, and now the wood should be removed during the construction, and the excess steel wire mesh will be removed.

The slurry and the extra concrete in the post-pouring belt of the beam plate need to be chiseled clean and chiseled, and all the original concrete garbage of the base Zheng brigade can be cleaned up before entering the next process. Rust removal and straightening of steel bars: steel bar rust removal includes all steel bars are derusted, and the steel bars in the foundation are rusted with a long wire brush; After the rust is removed, the steel rust in the post-pouring belt is washed clean with water; After rust removal, the bent steel bar should be straightened, the stressed steel bar in the beam plate should be lapped and repaired according to the design requirements, and the steel bar that needs to be supplemented should be supplemented; After passing the acceptance of the supervision unit, the foundation should be poured immediately after the rust is washed, and the floor is poured with a washing belt before the concrete is poured to prevent the secondary corrosion of the steel bar.

1. Post-pouring belt construction process: dismantling, cleaning up post-pouring belt debris, steel bar rust removal, shaping, binding or repair welding, formwork height and width stove support, supervision and acceptance, pouring concrete.

2. Construction method of post-pouring belt: dismantle and clean up post-pouring belt debris. During the on-site construction, in order to pursue the accuracy of the post-pouring belt retention position and the sense of the hall, the two sides of the post-pouring belt are steel wire mesh and wood, and now the wood should be removed during construction, and the excess steel wire mesh will be removed.

The slurry and the extra concrete in the post-pouring belt of the beam plate need to be chiseled clean and straightened, and all the original concrete garbage can be cleaned up before entering the next process. Qi pretend to be steel bar rust removal and straightening: steel bar rust removal includes all steel bar rust removal, and the steel bar in the foundation is rusted with a long wire brush; After the rust is removed, the steel rust in the post-pouring belt is washed clean with water; After rust removal, the bent steel bar should be straightened, the stressed steel bar in the beam plate should be lapped and repaired according to the design requirements, and the steel bar that needs to be supplemented should be supplemented; After the acceptance of the supervision unit, the foundation should be poured immediately after the rust is washed, and the floor post-pouring belt is washed before the concrete pouring to prevent the secondary corrosion of the steel bar.

The post-pouring belt is a construction technology that sets up a section of unpoured concrete belt with a width of a certain size around the wall, column and other components of the concrete rolling structure, and pours it after the concrete component is poured. The role of the post-pouring belt is mainly in the following aspects:

1.Protection of concrete structures: In the construction of concrete structures, it is very important to improve the quality and safety of purification, and the post-pouring belt can play a role in protecting the shape and structure, making the structure stronger and stronger.

2.Control the temperature stress of the structure: because the concrete components are affected by various factors such as self-weight, vibration, and temperature changes during the construction process, different degrees of stress will be generated.

By pouring the tape after a period of pouring, it is possible to achieve a better overall effect than usual, even in the case of large shrinkage of the concrete component, and can adjust and control the temperature stress of the structure, thereby reducing the risk of cracking and deformation.

3.Protect the appearance of the structure: During the construction process, the concrete surface is prone to different textures and color differences.

If this happens, it will not only affect the aesthetics and look of the building, but will also decay naturally over different time periods. The post-pouring belt can make the concrete look more beautiful, shorten the construction time, and reduce unnecessary waste.

In a word, post-pouring belt is one of the common techniques in modern building construction. Through reasonable control and use of post-pouring belt, it can not only improve the quality and toughness of concrete components, but also control the stress of the structure, so as to achieve various purposes such as effective protection of the structure, repair of the building, and beautification of the environment, which is of great significance for improving the overall quality and safety of the building structure.

Post-pouring belt is a harmful crack that may occur in the construction of cast-in-place reinforced concrete structures due to uneven temperature and shrinkage. However, what are the construction plans for post-pouring belts? PChouse will take you to find out.

1. Isolation of post-pouring belt.

1. In the formwork construction stage, the position of the post-pouring belt is determined on the erected template according to the drawing, and then the 5cm wide slats are nailed on the template according to the determined position, so as to ensure that the net size between the slats is the width of the post-pouring belt designed by the drawings.

2. After the bottom plate steel bar is tied, nail 5cm 5cm wood square on the slats that have been nailed, and fix the bottom plate steel bar and the bottom reinforcing rib.

3. After the upper steel bar is tied, the upper steel bar and the plate surface reinforcing bar are fixed with 5cm 5cm wooden square.

4. The position of the beam is inserted into the beam with a wooden square and fixed.

Second, the post-pouring belt reinforcement.

1. Set up the beams and plates of the post-pouring belt, and the original steel bars on the post-pouring belt should not be cut off, and they should be reinforced according to the structural requirements.

2, beam liquid steel reinforcement: when the beam height is less than 700mm, between the upper and lower layers of the beam reinforcement add four 12 steel bars, the length is 1640mm.

3. Plate reinforcement: Half of the cross-sectional area of the steel bar at the bottom of the plate is taken from the reinforcement at the bottom of the plate, with a length of 1360mm and a spacing of 200. The reinforcing ribs on the surface of the plate are the same as the reinforcing ribs at the bottom of the slab. When there is no original plate surface reinforcement, take 8@150.

4. The two tests of the post-pouring belt are fixed with a steel bracket to fix the lead wire mesh or steel plate mesh partition.

Third, the post-pouring with concrete pouring and maintenance.

1. When the formwork is removed in other parts, the formwork of the post-pouring belt part is retained and shall not be removed. Before the construction of the post-cast belt, the timber and slats used to separate the post-cast belt are removed.

2. After the construction of the pouring belt, before the new pouring of concrete, the joint or the existing concrete surface of the garbage, cement film, loose sand and weak concrete layer should be cleaned, and at the same time, it should also be chiseled, and the shirt should be washed and moistened with water. And the reinforcement of the post-poured belt part will be arranged.

3. After brushing the cement slurry twice, the compensating shrinkage concrete (C30) with a higher level of design strength grade is poured in time and the surface is cleaned and brushed.

4. Due to the pouring of concrete with post-pouring, it has entered the winter, and the concrete with concrete should be covered with grass curtain maintenance, and the curing time should not be less than 14 days.