Floors in factories & industry have always been a source of problem in the production areas. Abrasion of floor, breakage due to lower compressive strength etc are some of the prime reasons for failure of concrete floors.

Concrete being the most versatile of flooring material, has been in use for a long time. To overcome the deficiencies of concrete, a system was devised to improve the properties of such concrete floors. This system was “Vacuum Dewatered Floors”.
This system permits us to add as much water for making concrete workable & easily pourable. Normally addition of water beyond a point reduces the strength of concrete. All the same, to mix the concrete well water used is generally more than the optimum water cement ratio. This system removes the excess water after pouring of the concrete & thus an ideal water cement ration can be achieved.

In this system, concrete is poured in place & vibrated with a poker vibrator. Then a screed vibrator is run over the surface, supported on channel shuttering spaced 4.0 meters apart. The screed vibrator is run twice to achieve optimum compaction & leveling. After this a system of lower mats & top mat is laid on the green concrete & this is attached to a vacuum pump. This draws out excess water. The surface immediately hardens after this process & becomes workable. This is followed by running the mechanical power floater to level off the surface. The last process is working the power trowel to trowel off the final finished surface.

The process is ideal for concrete roads too & is widely in use.

Why Vacuum Dewatered Floors (VDF) ? Read More »