The previous two days have been cold weather, the temperature is exceptionally low. Construction workers in the construction process is certainly very hard, winter construction film faced plywood and in the summer is different, some construction workers or in accordance with the summer way of construction, this will cause damage to the film faced plywood, resulting in the service life of the film faced plywood is shortened. So in the winter how to carry out the construction of the film faced plywood?
A, film faced plywood installation precautions
- During the construction of the film faced plywood in winter, the snow and soil on the formwork plywood need to be cleared before the support mold is used, and after the completion of the support mold, the debris in the film faced plywood, the snow and ice must be cleaned, but do not water. Winter is easy to wind, if the strong wind weather, it is necessary to stop the assembly and lifting of large formwork plywood.
- Before the installation of the column template, it is necessary to elastic the axis column side line and fix the elevation on the steel bar. In addition to ensuring the column mold and support are firm and stable, the upper and lower template should also be supported on the same vertical center line.
3, for the wall, the back of the column formwork plywood can use 20 mm thick flame retardant polystyrene plywood insulation, and to install firmly.
4, if it is the beam side die can also use 16 mm formwork plywood, the staircase is best to use 18 mm laminating board, different structures using different specifications of laminating board.
Two, what do we need to pay attention to when removing the film faced plywood
1, in the winter like now, when the laminating board removal work, need to submit the demolition application in accordance with the regulations, should include the demolition mold test block pressure test report, to be approved after the demolition mold application, the film faced plywood removal can be carried out.
- The removal work shall be carried out according to the sequence and method specified by the film faced plywood. However, if there is no specific regulation in the project, the principle of supporting before removing can be followed.
3, in the normal temperature, if not because of the wall mold and damage to the concrete corners, surface layer, you can arrange the staff to remove the mold work. If the temperature is relatively low, the mold must be removed under the condition that the compressive strength of the mold test block reaches 8MPa and the concrete is not frozen, and the removal time should be strictly controlled.
In fact, whether it is hot or cold, the removal of the formwork film faced plywood should be carried out in accordance with the regulations. This will ensure the quality of the concrete, as well as protect the plywood.