VDF (Vacuum Dewatered Flooring)

An advanced concrete flooring technique where excess water is removed using vacuum dewatering equipment, resulting in increased concrete density, superior strength, abrasion resistance, and reduced shrinkage.

1) Preparation: The Sub-Base Is Cleaned And Leveled. Steel Channels (MS C-Channels) Are Fixed As Guide Rails At Specific Intervals (Usually 4 Meters) To Define Panels And Slopes.
2) Concrete Laying: Concrete (Typically M20 To M30 Grade) Is Poured And Spread Between The Channels.
3) Vibration & Levelling:
4) Poker Vibrators Are Used For Deep Compaction, Especially At Panel Edges.
5) Double Beam Screed Vibrators Run Over The Guide Rails To Level The Surface And Remove Air Bubbles.
6) Vacuum Dewatering: Suction Mats (Top Mat And Filter Pads) Are Placed Over The Wet Concrete. A Vacuum Pump Then Extracts 15–25% Of The Surplus Water, Typically Taking 1.5–2 Minutes Per Centimeter Of Slab Thickness.

1) Hardening (Optional): Once The Concrete Can Support Light Foot Traffic (Leaving A 3–6 Mm Imprint), A Dry-Shake Floor Hardener May Be Applied To Improve Surface Density.
1) Power Floating: A Machine With A Rotating Disc Grinds The Surface To Close Pores And Increase Wear Resistance.
2) Power Trowelling: Trowel Blades Provide The Final Smooth, “Mirror-Like” Finish.
2) Curing & Grooving: The Floor Is Cured For 15–20 Days. Finally, Groove Cutting Is Performed To Create Expansion Joints And Prevent Future Cracking.

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