Hello World! Welcome Friends! The removal of concrete formwork is essential for formwork stripping, and you should do this only after the time when concrete is strong enough to do so. Formwork is a temporary model in which you can pour the concrete and compress it according to the design. It is recommended to remove the concrete when it has its dead weight and is strengthened without the formwork or any props. It is critical to learn about the exact time to remove the formwork.
Meaning of Stripping Time of Formwork
The hardening rate of concrete or the concrete strength depends on temperature and the effects of formwork removal time. For instance, the required time to remove the formwork during winters will be more than required in summer.
You should be careful when removing the formwork if it is on beams and slabs, as these members are subjected to self-load and take load during construction. They may deflect if the strength is not sufficient enough to handle the leads.
You should do some tests on cylinders or cubes to estimate the strength before removing the formwork. You should prepare the cubes or cylinders from the same mix as that of the structural members and cure them under the same circumstances of temperature and moisture as the structural member.
When you are sure that the concrete among the structural members has gained enough strength to withstand the design load, you should only remove it only when you are sure it has enough strength; if possible, you should leave it for more time because it will help in curing.
What Will Happen If You Remove the Formwork Early?
Early Removal of Support
Your formwork does not have enough strength; it may collapse the system. You should note that if deviations happen at certain times; they will be permanent and difficult to repair.
Early Removal of Side Support
If you remove the formwork right away, the beams and columns may bulge if your concrete is not hardened.
What Are the Types of Formworks?
There are various types of formwork; let us discuss the following:
Timber Formwork
It is one of the most common types of formwork; most people use it extensively used in construction from the ancient period. It is the oldest type of formwork people use.
Steel Formwork
Steel formwork is popular due to its strength and durability and repetitive use for a long period. It is usually costly for small work, but it is best for larger projects. Steel formwork offers smooth surface finishing to concrete than timber framework.
Plywood Formwork
It is one of re-molded timber resin-bonded plywood attached to timber frames to make up panels of the required sizes. It is strong, easy to handle, and flexible. The life of this type of formwork is shorter than other materials.
Conclusion
As you have read, the removal time of the formwork depends on the material and weather conditions. It is better to take the help of an expert construction company as their expertise in this field will help you remove the form efficiently.
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