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C05 knowledge check
Surface Preparation
Pass is 80%. This is open-book — use the academy, not hope.
1. Several patches sit close together in the same area and all need topcoating. You:
Tape and coat each patch on its own, then merge the squares where they meet.
Grind the surrounding surface out far enough to tape the whole cluster as ONE single square.
Feather the topcoat around each patch so there is no hard edge.
Coat the whole room so nothing has to be taped.
2. The main purpose of concrete surface preparation is:
To make the floor look clean before the customer walks it.
To ensure an adequate bond exists between the concrete and the Maverick system.
To flatten the slab.
To speed up cure time.
3. True or false: on new concrete, the main reason for surface preparation is to remove laitance.
True
False
4. The majority of Maverick installations require a profile between:
CSP 1 and CSP 2
CSP 2 and CSP 4
CSP 5 and CSP 7
CSP 8 and CSP 10
5. True or false: the higher the CSP number, the rougher the concrete.
True
False
6. A thin-mil coating is going down. The preferred preparation method is:
Scarifying
Grinding
Acid etching
Flame blasting
7. Which preparation method is the most versatile and produces an excellent profile for adhesion?
Grinding
Steel shot blasting
Pressure washing
Needle scaling
8. Grinding will remove existing coatings up to about:
6 mils
10 mils
1/8 inch
3/4 inch
9. True or false: scarifying is a good choice right before applying a coating.
True
False
10. Aside from small grinders, preparation equipment typically requires:
Standard 120V wall outlets
A portable generator only
High voltage service, 240 or 480 volt, three phase
No power — these are mechanical tools
11. A drop of water placed on the slab beads up instead of soaking in. That means:
The concrete is properly sealed and ready.
There is a good chance the concrete is contaminated.
The slab is too dry to coat.
The profile is too rough.
12. Degreasing a contaminated slab is performed:
Before any mechanical preparation
After mechanical preparation is complete
At the same time as grinding
Only after the primer goes down
13. You are degreasing a heavily contaminated slab with Simple Green. The concentration and dwell are:
4 oz per gallon, dwell 3 to 10 minutes
8 oz per gallon, dwell 3 to 10 minutes, and never let it dry
Full strength, dwell until dry
8 oz per gallon, dwell overnight
14. Shot blasting is finished and the slab is swept and vacuumed. The step still missing is:
A magnet sweeper to pick up steel shot left on the substrate
An acid etch to open the pores
A water rinse
Nothing — vacuuming is the last step
15. A crack measures wider than 1/4 inch. You treat it as:
Static — fill it and move on
Dynamic
A control joint
Cosmetic
16. Static cracks under a thinner system — broadcast, self-leveler, or coating — are filled with:
The same mortar used on MavClad installations
MavPatch or MavGrout
MavJoint JF
Fiberglass and elastomeric
17. True or false: fiberglass crack treatment is 100% effective at stopping cracks from coming through the finished system.
True
False
18. Prep is running far slower than planned and the profile is not coming up. A likely cause is:
The slab is too new
A surface hardener in the concrete
The vacuum is attached
The grinder is too large
Score quiz
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