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DRY & GREEN

International Ltd.

Swinnenwijerweg 12
B-3600 Genk - Belgium
Tel: +32 (0)89 / 24 .80 .81
Fax: +32 (0)89 / 24 .80 .86
Email: info@dryandgreen.com

 


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MILLING / PROFILING

Milling Preparation

The Milling operation is based on a drum rotating at high speed within the body of the machine. The profile (cut / texture) is created by the accessories fitted to the drum known as picks.

Concrete 'Floor' Milling is the bulk removal of concrete (between 5mm and 50mm deep) from a concrete floor. Concrete milling machines leave a coarse texture that is suitable for relaying tiles. The consumables that are used in concrete milling are Tungsten Carbide Cutting Teeth.

There are a number of reasons concrete floors are milled. The first is if the concrete slab is in poor condition and require the top 5mm to 25mm removed as a part of flooring restoration. After the floor is milled there are a number of processes that the contractor can follow with.

We would select milling to:

  • Remove materials in excess of 3mm in thickness i.e. latex, screeds, adhesives, contaminants and multiple layers of old coatings
  • Reduce tamped surfaces
  • Reduce levels

The profile created by the process and drum configuration should always be considered.

There are numerous surfaces suitable for planing:

  • Milling is often specified for removal of high build coatings, thermoplastic compositions, surface contaminants in excess of 3mm, latex and polymer screeds

Milling concrete

Accessories:
There are different shapes and sizes of picks available for specific tasks and they can be arranged on the drum for lighter removal applications through to heavy duty grooving.

  • Picks – for reducing concrete and designed to fit ride-on machines
  • Saw blades and special tools for grooving

Milling concrete with small hybrid units

Key considerations:
Hard compositions may create a problem for smaller planing machines as there is not enough weight to cut into the surface. The profile achieved by the operation must always be considered for the specified product to be applied.

The composition and thickness of the substrate, the accessories selected and the profile and depth of cut attainable from the model and type of machine selected, will determine the results achieved.

Often we will mill a surface twice in the floor preparation, just to save the contractor on material cost. The first milling phase to remove the unwanted material, the second phase to refine the milled surface.

On the other hand, the smaller milling machines have great advantages over their big brothers and/or sisters:

- limited weight on the floor
- confined areas
- less damage to surface and smoother milling profile
- special configurations are possible

Milling in confined areas:

milling in confined spaces

 

Special milling applications:

milling gutters in concrete

Vertical or horizontal milling techniques:

Vertical concrete and ashfalt milling head

Horizontal concrete and ashfalt milling head

 

Please take a look at the other preparations methodes that could even better suit your needs:

- Scarifying / Scabbling

- Planing / Levelling

- Shaving / Grooving

- Shot Blasting

- Grinding & Polishing

- Scraping / Demolition

- Sealing