Formwork is a mould for a structure. Into this mould, fresh concrete is poured only to harden subsequently. The construction of formwork takes time and involves expenditure upto 20 to 25% of the cost of the structure or even more. Design of these temporary structures are made to economic expenditure. The operation of removing the formwork is known as stripping. Stripped formwork can be reused. Reusable forms are known as panel forms and non-usable are called stationary forms.
Timber is the most common material used for formwork. The disadvantage with timber formwork is that it will warp, swell and shrink. To overcome this issues MIVAN Formwork came into lame light there are many uses and even profits when compared with the timber formwork.
MIVAN ALUMINIUM FORMWORK:
Mivan is an aluminium formwork system developed by a European construction company. In 1990, the Mivan Company Ltd. from Malaysia started manufacturing these formwork systems. Today, more than 30,000sqm of formwork from Mivan Co. Ltd. is used across the world. The MIVAN formwork has proven economical as well as satisfactory for the overall construction environment.
Mivan technology is suitable for constructing large number of houses in a short span of time using room size forms to construct walls and slabs in one continuous pour on concrete.
Aluminum formwork is very cost effective for repetitive Buildings layouts and for above the plinth work. This system is very unique as all the components in a buildings, including slabs, beams, walls, columns, staircases, balconies and special window hood are of concrete and there is no need for block works or brick works.
The modular nature of the Mivan aluminium formwork system allows easy fixing and removal of formwork and the construction can proceed speedily with very little deviation in dimensional tolerances. System is quite flexible and can be easily adapted for any variations in the layout. It consists of four components Beam components, Deck components and wall components these all are made of high strength aluminium alloy.
MIVAN aims in using modern construction techniques and equipment in all its projects. On leaving the MIVAN factory all panels are clearly labeled to ensure that they are easily identifiable on site and can be smoothly fitted together using the formwork modulation drawings. All formwork begins at a corner and proceeds from there.
Simplicity – pin and wedge system in MIVAN aluminium formwork :
The beams are held in position by a simple pin and wedge system that passes through holes in the outside rib of each panel. The panels fit precisely, simply and securely and require no bracing.
Work Cycle of MIVAN Formwork:
Day # 2: –The second activity involves erection of the second side of the vertical formwork and formwork for the floor
Day # 3: – Fixing reinforcement bars for floor slabs and casting of walls and slabs.
Day # 4: –Removal of vertical form work panels after 24hours, leaving the props in place for 7 days and floor slab formwork in place for 2.5 days.
Comparision between MIVAN Formwork and Traditional formwork
|MIVAN Formwork||Traditional formwork|
|Ease of construction and easy to remove formwork||Very hard to remove formwork and require more labour to remove formwork|
|Same formwok can be used for 1000 times.||Same Formweork can’t be used more than 10 times.|
|No need of plastering||Need of plastering|
|High seismic resistance||Low seismic resistance|
|Faster in completion of formwork||Takes to time to construct formwork and remove|
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