There are several methods for releasing the formwork from the concrete surface, depending on the type of formwork used and the desired finish of the concrete. Here are some common methods:
1. Stripping the formwork: This is the most straightforward method and involves physically removing the formwork from the concrete surface. It can be done by disassembling the formwork panels or by lifting the formwork away from the concrete using cranes or other lifting equipment.
2. Formwork removal agent: This method involves using a releasing agent or formwork removal agent to facilitate the release of the formwork from the concrete surface. These agents are typically sprayed or brushed onto the formwork before pouring the concrete. The chemicals in the agent create a barrier between the formwork and the concrete, allowing for easier removal.
3. Thermal release: In this method, heat is used to release the formwork from the concrete surface. Heating the formwork causes it to expand, creating a gap between the formwork and the concrete, which allows for easy removal. This method is commonly used with metal formwork.
4. Water blasting: For some types of formwork, such as plywood or timber, water blasting can be used to release the formwork from the concrete surface. High-pressure water jets are directed at the formwork, which helps to loosen it and separate it from the concrete.
5. Mechanical release: This method involves using mechanical tools or equipment to remove the formwork from the concrete surface. It can include using pry bars, hammers, or other tools to loosen and dislodge the formwork from the concrete.
It is important to note that the method of releasing the formwork should be carefully chosen to avoid damaging the concrete surface or compromising its structural integrity. The choice of method depends on factors such as the type of formwork, the desired finish of the concrete, and the specific requirements of the project.
There are several methods of releasing formwork from the concrete surface. These include using form release agents, applying a thin layer of oil or grease on the formwork, using water-based release agents, using mechanical methods such as vibrating or tapping the formwork, and using thermal methods such as heating or cooling the formwork. Each method has its own advantages and considerations depending on the specific project and requirements.
