The first is the pre-cutting of wooden circular column formwork. You must use alloy saw blades with more than 100 teeth and a sawing machine with rails. If you need a circular formwork with an irregular shape, you should use a portable electric saw to cut it. After cutting the construction circular formwork, a special edge lacquer should be used to close the incision to prevent the wooden circular formwork from absorbing water and deforming. When nailing or punching a round formwork, place a wooden square underneath the formwork, because there will be cracks in the suspended nail formwork. During the construction, it is necessary to prevent scratches, bumps, falls, etc. of the metal corners, and its assembly shape and surface integrity should not be damaged.
Cement wooden circular column formwork can be used many times after the previous cutting, so it is essential to store it in the maintenance process, which will affect the service life of the circular column formwork and the trouble of the pen during construction. Below we summarize the relevant circular column formwork for everyone The correct storage method and post-maintenance rules after the board.
In general, the thickness of the wooden cylindrical formwork has three specifications of 14, 18, 22mm. The thickness of 14mm will be used for the inner diameter less than 550. The reason is simple. The smaller the diameter of the cylinder, the smaller the pressure on the formwork. The 14mm cylindrical formwork with an inner diameter of less than 550mm has sufficient pressure resistance; The formwork with a diameter of 600-1200mm is 18mm thick. At this time, the round formwork needs to be increased in thickness to enhance the compressive capacity to ensure that the formwork is sufficient to support the pouring of the cylinder. The round formwork with a diameter of more than 1300mm is all 22mm thick. The large diameter requires sufficient thickness. Generally, the round formwork with an inner diameter of more than 1300 is recommended to be low in height. The method of pouring multiple times is to pour. One is to ensure the safety of workers during the construction process, and the other is to ensure that the raw materials are sufficient during the pouring process. use.
Secondly, the storage location after the circular column formwork is cut off should be selected in a flat and dry place, and can not be stored in an extreme temperature and humidity storage area. If the circular column formwork needs to be stored for a long period of time, it should be coated with oil on its surface, stacked neatly and covered with a rain cloth.
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