1, Plywood deformation problem: in the process of concrete pouring, plywood is affected by pressure, temperature and other factors, deformation problems may occur. For example, in the large volume of concrete pouring, plywood due to the temperature is too high, the internal stress changes, resulting in local deformation of the template. plywood deformation will make the size of the concrete structure deviation, affecting the appearance and overall structural performance.
2, Splicing not tight problem: plywood between the splicing gap is too large, will lead to concrete leakage. This will not only waste materials, but also make the surface of the concrete appear honeycomb pockmarks and other defects. In some projects where the appearance of concrete is required to be high, poor splicing will affect the aesthetics. At the same time, the leakage of slurry may also affect the strength of concrete and reduce the stability of the structure.
3, Template surface damage problem: in the process of building construction, plywood surface may be subject to a variety of mechanical collision, friction, etc., resulting in damage to the surface of the plywood, plywood surface damage will affect the molding effect of the concrete, reduce the service life of the template.
4,Difficulty in demolding: due to improper surface treatment of plywood, or too long a period of time after the concrete is poured, resulting in excessive bonding between plywood and concrete, demolding difficulties.
5, The support system is not stable problem: plywood support system if the design is not reasonable or installation is not solid, will lead to plywood in the construction process of shaking, collapse and other dangers. For example, the support spacing is too large, insufficient strength of the support material may trigger the instability of the support system. This will not only affect the construction progress, but also pose a threat to the life and safety of construction personnel.
Problems that occur during the use of plywood must be emphasized. Construction personnel should operate in strict accordance with the specifications, timely detection and resolution of problems to ensure the quality of plywood and construction safety.