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Anonymous users2024-02-121. Prefabricate the embedded parts first, and meet the requirements of the design drawings.
2. Try to put the embedded parts to see if they can be put down, the key is whether there are steel bars in the way? If so, trim it.
3. Start pouring the column concrete to the top, a little higher, and immediately bury the embedded parts, which can be knocked down with the help of a hammer hammer and the like. Check the flatness and elevation of the surface to meet the requirements.
4., clean the surface.
There is another method: the embedded part and the embedded screw are separated, in this case, first the embedded screw and the column reinforcement are welded, and then fixed firmly, and then the concrete is poured to the column top elevation, and then the embedded steel plate is sleeved into the screw hole, knocked down with the help of a hammer hammer and the like, and the elevation and flatness can be adjusted.
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Anonymous users2024-02-111. Construction preparation.
1) Operating conditions.
1. Pouring concrete columns: formwork, steel bars, embedded parts and pipelines are all installed, and the design requirements are met after inspection, and the hidden and pre-inspection procedures are completed.
2. The frame and horse road for pouring concrete have been erected and passed the inspection.
4. The vibrator (rod) has passed the inspection and trial operation.
5. The operation team has been fully disclosed to the construction technology.
2) Material requirements.
1. The concrete is made of commercial concrete, and the concrete supplier has the relevant production qualifications and production and transportation capabilities.
2. Reinforcing bar: The grade and specification of reinforcing steel must meet the design requirements. The quality is in line with current standards. The surface is free of old rust and oil stains. Chemical analysis is done if necessary.
7. Release agent: water quality mold separator.
Second, the operation process.
1) Homework preparation.
1. Before pouring, the garbage, soil and other debris in the formwork and the oil stain on the steel bar should be cleaned up, and the protective layer cushion block of the steel bar should be checked to meet the requirements of the specification.
2. Watering the wooden formwork to make the formwork moist. The sweeping port of the column formwork should be closed after removing debris and stagnant water.
3. The loose concrete and weak concrete layer of the construction joint have been removed and cleaned, and the stones have been exposed, and the water is moist, and there is no clear water.
4. The column reinforcement has been installed and passed the hidden acceptance.
b) Concrete mixing.
Using commercial concrete, concrete manufacturers have relevant production qualifications and production capacity, and fully meet the relevant specifications and design requirements.
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Anonymous users2024-02-101. Prefabricated embedded parts. Pay attention to the solder corners.
2. Pour concrete columns and vibrate.
3. After pouring and vibrating, immediately bury the embedded parts, and don't wait for the concrete to dry. You can knock it down with the help of a hammer hammer or something.
4., trowel and clean.
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Anonymous users2024-02-09The concrete is poured first (the embedded parts are made before), and then the embedded parts are buried.
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Anonymous users2024-02-08When the column is poured, the pouring thickness of each layer of concrete is generally about 5 cm.
Concrete pouring of columns:
1) the bottom of the column should be filled with 5 10cm thick and concrete mix ratio of the same stone mortar, column concrete should be layered vibrating, the thickness of each layer is not more than 50cm when using the plug-in vibrator, the vibrating rod shall not touch the steel column height within 3m, can be directly poured under the ash at the top of the column, when more than 3m, measures should be taken (with a string of barrels) or in the side of the template to open the door hole to install the inclined chute segmented pouring. The height of each section shall not exceed 2m, and the door hole formwork shall be closed tightly after each section of concrete is poured, and shall be firmly clamped with hoops.
2) The concrete of the column should be poured at one time, and it should be left under the main beam when it is necessary to leave the construction joint. Beamless floor slabs should be left underneath the column caps. When pouring as a whole with the beam plate, it should be stopped after the column is poured, so that it can obtain preliminary solidity, and then continue to pour.
3) After pouring, the stretched lap reinforcement should be arranged in place at any time.
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Anonymous users2024-02-07Column pouring.
There is no fixed thickness. That is, you have to make sure that you pour this side and the other side has not solidified.
If you pour the left side first, then the right side after 1 meter, and the right side after 1 meter and the left side has not yet started to solidify, then there is no problem.
It can be based on the situation of your own construction site. I just prescribed them to change the tube for 3 cars.
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