Formwork is the system to support the plastic state concrete and to cast and keep in desired shape till it attains sufficient strength to support its own weight.

View Details

Sometimes, formwork is not removed in some of the new technologies, known as stay in place formwork or lost in place formwork.

Zolo are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

Chamfers, beveled edges if specified, should be provided in the forms.

For example if you are planning to construct a curved wall, then you need to use a shuttering material that can be bent to required curvature.

4. Finish:

The formwork should be hard enough so as to not to get damaged due to operations of reinforcement fixing, pouring and vibrating of concrete and removal of forms.

Also sheathing materials used in formwork must be able to give required finish to concrete structure.

5. Reuse and number of repetitions:

The formwork must be designed and planned to permit maximum reuses/repetitions to reduce the cost of concrete and the work.

If Plywood is used as sheathing/shuttering material, then it should be used properly so as to give higher repetitions.

Summary

Thus, the essential requirements of formwork are:

1. It should be strong enough to take the dead loads, live loads, incidental loads and other loads expected during construction before attaining the strength by the concrete.
2. The joints in the formwork should be rigid so that the bulging, twisting, or sagging due to loadings is within permissible limits.
3. The construction lines in the formwork should be true and the surface plane so that the cost finishing the surface of concrete on removing the shuttering is the least.
4. The formwork should be easily removable without damage to itself or the concrete.
5. It should provide ease of inspection.

Share this:

• Email

• Print

• More

Adapt the concrete recipe to weather conditions and note the following: At ambient temperatures <10 °C it becomes very difficult to produce architectural concrete to standards compatible with high requirements. This has an effect on stripping time and fresh-concrete pressure. For example, when the stripping time is prolonged during the cold weather conditions the concrete surface might appear darker.

Keep in mind that in hot weather conditions the formwork panels could warm up significantly. This could lead to quick drying of the concrete during pouring. After stripping the resulting flaws are visible on the concrete surface. Also, it is possible that the concrete starts stiffening sooner than normally when the temperatures are too high. Possible solutions are pouring of the concrete in the early hours of the day, using shades, or cooling the concrete with ice.

If you are looking for more details, kindly visit concrete wall formwork.