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In the building market, the choice and using of building formwork has always been the top priority of project quality and price control. Lately, plastic formwork has change into more and more necessary within the development market.

Plastic building formworks have certain advantages. Firstly, it has the traits of waterproof, corrosion resistance, acid resistance and alkali resistance, and are especially suitable to be used in underground and humid environments. The plastic formwork has high energy, strong toughness, robust impact resistance, robust elasticity, and is not easy to be deformed, thereby significantly improving the reusable of the formworks.

Secondly, the plastic formwork has all specs, light weight, light and easy to dismantle the mold, safe and reliable development operation and dealing with, low labor intensity and high construction efficiency. The plastic formwork can be used together with various wood boards similar to wood (bamboo) plywood.

After testing, the traditional utilizing of plastic formwork can reach more than 30 instances, which can significantly reduce the construction value, and the used formwork panels can be recycled, which is beneficial to the development of the formwork rental business. The plastic formwork doesn’t have to be coated with a release agent throughout use, and is simple to clean by just water, therefore, the cleaning and maintenance prices of the forms are reduced. The surface of the plastic formwork is smooth, and it has good peeling property from concrete so is easy to demould. It can tremendously speed up the construction progress, shorten the development period and assist to realize honest-faced concrete. In case of damage, the plastic formwork can recover, regenerate and reduce the pollution of waste to the environment.

Plastic building formworks also have sure disadvantages. It’s a newer within the concrete forms business, a powerful consultant of the new building concrete formwork, but because it is a new form of building formwork, there are still some deficiencies compared to the metal building formwork and the wooden building formwork.

First, the static bending power and static bending modulus of ordinary plastic building formworks are small compared with other formworks. The home utilized plastic building formworks are decrease in power than bamboo (wood) one, and also lower than foreign ones resembling GMT building formworks. The load-bearing of plastic building formwork is comparatively low. The reason why it has a relatively low carrying capacity is because most of the plastic building formworks are primarily within the form of flat panels, which are mainly utilized to the roof and floor slabs, , so just controlling the spacing between the secondary beams can meet the development requirements. Therefore, if a plastic building formwork is to be utilized to a wall column formwork, its energy should be high. The plastic building formwork is designed with a rib itself on the back of the formwork panels, which greatly enhances the strength of the formwork for wall formwork.

Second, the thermal growth and contraction coefficient of ordinary plastic building formworks is larger than that of metal and wood, because plastic building formworks are vastly affected by temperature. The data shows that at high temperatures, the 3m lengthy formwork can be stretched from 3mm to 4mm. If the development is laid in the summertime evening, the middle part of the formwork will be arched at noon. Due to this fact, plastic building formwork makes use of ABS plastic raw materials, which effectively reduces the coefficient of thermal expansion and contraction.