1. Level 1 – Flat [Ground]

2. Level 2 – Satin [Honed]

3. Level 3 – Semi-Polished

4. Level 4 – Highly Polished

5. Additional Protection
If floor will have potential to be stained, then a stain guard can be applied

6. Protection After Completion
Participants should understand polished concrete must be protected

7. A Special Note
About Samples

8. Be Careful, Be Very Careful
Use of samples can be problematic
Polished concrete is similar to wood and stone – will have a natural finish that cannot be predicted by a sample

9. Diamond Abrasives and Full/Maximum Refinement

10. Diamond Abrasives Most significant tool Many forms, shapes and sizes
Industrial grade
diamonds set in
metal or resin bondings of varying grits

11. Diamond Abrasives Categorized as: - Coarse - Medium - Fine
For concrete that is:
- Soft
- Hard

12. Diamond Abrasives Levels of abrasion:
- Grinding: 100 grit metals; 50 grit resins
- Honing: 100, 200, and 400 grit resins
- Polishing: 800 grit and above resins

13. How Diamond Abrasives Work
Abrasives cut peaks and valleys in concrete
Higher the grit, peaks and valleys are smaller
Each grit removes peaks and valleys of previous grit and can fully refine its own peaks and valleys

14. Most Important Aspect
Have to achieve full/maximum refinement for each bonded abrasive grit
Abrasive no longer cuts (or cuts very little) under its current weight
More refinement means more resistance to abrasion

15. Most Important Aspect
Full/maximum refinement achieved when surface is smooth (no peaks or valleys) and light is reflected in a perfectly organized manner