NACE CIP2 Exam Questions
- NACE classifications
Correct Answer:
SP standard practice, TM test methods, MR material requirements
Concrete cures by
Correct Answer:
Hydration
Poured concrete can be affected by
Correct Answer:
Ambient conditions & vibrations
Guniting
Correct Answer:
process of spraying or slinging shotcrete onto a surface as a coating to restore concrete to its original grade.
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Reasons to coat concrete
Correct Answer:
decoration, waterproofing, enhance chemical resistance, protect from freeze- thaw cycle, protection from reinforcing steel, decontamination, surface sealer, protection against abrasion and erosion, color coding, protecting products contained, improving or simplifying cleaning, skid resistance
Laitance
Correct Answer:
weak surface layer of WATER rich cement mix on the surface of fresh concrete caused by upward movement of water.
Efflorescence
Correct Answer:
Moisture passing through concrete carrying soluble SALTS to the surface. Salts react with CARBON DIOXIDE in atmosphere. White fluffy crystalline deposits.
Concrete surface prep
Correct Answer:
abrasive blast cleaning, hand/ power tool cleaning, high pressure waterjetting/ blasting, acid etching, stoning, centrifugal blasting or scarifying
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NACE 6/ SSPC SP 13
Correct Answer:
Standard for Surface prep of Concrete
Advantages of waterjetting/ wet abrasive blasting on concrete
Correct Answer:
fast cutting of the surface, washing dust away, reduces particles in the air.
Sacking
Correct Answer:
scrubbing a mixture of cement mortar over the concrete using sack, sponge rubber float
Stoning
Correct Answer:
abrasive block is used to smooth the surface of concrete
Coatings used over concrete
Correct Answer:
Bituminous cutbacks, chlorinated rubber, vinyl, epoxy, novalac epoxy, elastomeric polyurethane, sheet materials (ie rubber), Glass fiber reinforced plastics (GRP) & furan resins
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