Views: 0 Author: wald Publish Time: 2023-05-09 Origin: wald
The main function of formwork in concrete buildings is to restrict the movement of the uncured concrete so that after it has set it becomes what the builder wants it to be. Types of Formwork (Shuttering) can be classified according to formwork material and structural originals. It can also be named according to the type of structural member, such as Floor formwork (Slab Formwork), column formwork, beam formwork, etc.
The cost of building formwork can be as high as 20% or more of the cost of the structure. The operation of removing the stencil is called stripping, and the stripped stencil can generally be reused. According to the needs of the project, builders provide two options, which are called fixed forms (disposable formwork) after removal and cannot be reused, and reusable forms are called panel forms.
Wood is the most common formwork material. But the water absorption of wood causes it to swell and deform. Defects can be effectively mitigated by applying an impermeable coating to the wood surface. A better wood is plywood for concrete, which is economical, overcomes water absorption, and can be reused.
Strong enough to withstand the pressure of uncured concrete.
The joints are tight to prevent the leakage of cement mortar.
It is easy to remove and will not cause damage to the concrete finish.
The material is cheap and can be reused.
Be as light as possible
For use on exposed concrete projects, with a smooth and even surface on the face that comes into contact with the concrete. In addition, it should be light in weight, not easily cracked by nails, and not rotted inside.
Plywood for concrete is made by bonding the formwork together with resin adhesive, which has excellent waterproofness and firmness. By attaching to the wooden frame and matching with the steel support structure, the required formwork is formed. Plywood formwork has great advantages over wood formwork:
1. The smooth surface can produce excellent finish and reduce the cost of finish treatment.
2. Large size panels can save labor costs for installation and disassembly.
3. Compared with wood formwork, it can be reused more times.
4. Bendable
Made of sheet steel, edges reinforced with small steel angles. Panel units are held together by clamps or bolts and nuts. These panels can be manufactured in any desired size or shape. Steel formwork is primarily used for large projects or where the formwork needs to be reused. Compared with wood formwork, steel formwork has great advantages:
1. More repeated use times, stronger, durable and longer service life.
2. The concrete finish is flat, and there is almost no need to deal with the finish.
3. Steel formwork does not absorb moisture.
4. Sturdy enough not to shrink or expand.
ZEEMO Formwork provides builders all over the world with anything they need for formwork:
Material: plastic, plywood, steel, aluminum, etc.
Shape: round/rectangular column formwork, wall formwork, beam formwork, table formwork and climbing formwork, etc.
Accessories:Hollow Screw Jack Base, Jack Nuts, LVL Plank, Prop Sleeve, Rigid Stud, U Head Screw Jack, etc.
