Formwork plywood is used for creating molds when pouring concrete. It is weather-resistant and not aesthetically pleasing. It is strong and resistant to water damage. It can be reused and held in place by temporary supports. It does not have an exterior veneer, making it less expensive.
Formwork plywood is a material used in the formwork process, which occurs when pouring concrete into molds. Formwork plywood can be constructed in such a way that it forms a mold that is weather resistant and does not stick to the concrete itself. This material is usually not particularly attractive, so it is not suitable for applications that require an aesthetically pleasing exterior finish. Plywood is a type of wood panel that is created by laying thin wood veneers on top of each other, then gluing those veneers together.
Plywood can be very strong if built correctly. Veneers are usually laid so that the grains run perpendicular to each other, thus maximizing strength and reducing the likelihood of splitting. The type of glue used to create the wood will also impact its strength. Formwork plywood is most often used for exterior applications, which means the wood must be resistant to water damage, especially warping and decay. The glue used to make formwork plywood is therefore resistant to moisture penetration to ensure strength and stability. This type of wood can generally be reused, although the panels will need to be cleaned carefully and the wood stored in a cool, dry place.
Some plywood features a smooth, attractive exterior veneer; it is usually of a higher quality than the other veneers in the center or within the plywood. This is done so that the outer layer is an attractive one that can be sanded and finished for projects that require a clean, attractive aesthetic. Formwork plywood will not have such a veneer, as this material is not meant to be used for aesthetic purposes. This also means that formwork plywood is likely to be less expensive than other plywoods that feature a high-end exterior veneer.
The formwork plywood panels will be held in place by temporary wood or metal supports. Once the plywood is in place, concrete can be poured into the mold created by the panels and the panels will support the concrete until it sets. The plywood can then be pulled away from the concrete, thus creating a concrete structure independent of the plywood and the temporary structural supports holding the plywood in place. If there is cement left on the plywood, a release agent can be used to remove it so the wood can be reused.
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