March 27, 2017

Shot Blasting & Diamond Grinding

Shot Blasting

Shot blasting has emerged as one of the most effective, as well as possibly the cheapest technique for surface preparation prior to operations such as concrete and steel preparation and prior to various types of coatings. Shot blasting can be beneficial where there is rain damage, surface stress, delaminating, improper curing, cured cold joints, joint shoulder failure or just wear and tear from years of use. It can increase strength for deteriorated and weakened concrete finishes with more abrasion resistance and an increase of impact resistance.

Shot blasting a floor will remove the very top layer of concrete leaving the floor with a sandpaper finish which allow a much better bond with any kind of coating you may be applying. Shot blasting is by far the highest recommended method of preparing a substrate for any kind of coating or sealing. The increase of ambient lighting makes it environmentally friendly by reducing the cost of lighting as well as enhancing the beauty of your floor. Shot blasting is useful for many industries, including the aerospace, ship building, forging and steel industries because it provides a consistent and uniformly fine, rough or matte surface depending on the techniques and tools used and the type of surface required. 

Here are some of the major benefits associated with shot blasting as a surface preparation technique.

  • Eliminates the usage of non-eco-friendly and harsh chemicals
  • Provides higher production rates
  • Facilitates the formation of a permanent bond between the protective coat and the shot blasted surface.
  • Increases longevity and durability of protective surface coats as it adheres better to the shot blasted surface
  • Virtually dust free

See the chart below for comparison with other techniques.

 
Diamond Grinding

Removal of thin hardened concrete surface layer using closely spaced diamond saw blade mounted on the high speed rotating drum of a grinding machine.

  • Improves smoothness
  • Increases longevity
  • Lowers agency costs
  • Cost-effective preservation technique
  • Enhances surface friction consistency
  • Environmentally friendly
  • Residues vacuumed and recycled
 
Required Steps Comparison Chart:

Acid Etching

Scarifying

Shot Blasting

1. Clean floor with detergent 1. Protect equipment
        & workers
1. Clean & profile floor
2. Profile with acid 2. Clean & profile floor 2. Clean & profile floor
3. Flush & clean up 3. Clean up slurry

No clean-up

  4. Wait for floor to dry

No waste disposal

   

No drying required

Diamond Grinding