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Daily Quiz (17)

True or false: The source of soluble salts migrating to the surface of a coating to create efflorescence can be either the coating itself or the substrate.

What can make concrete difficult to protect with coatings?

True or false: Microcracking of concrete due to mechanical surface preparation methods is sometimes called spidering.

What is the term for the destructive reaction that occurs in concrete between cement paste and amorphous silica found in certain aggregates in the presence of moisture?

True or false: Bugholes can be caused by oil and grease on the surface being coated.

What causes the corrosion of rebar in concrete?

True or false: Plastic shrinkage cracking of concrete tends to occur during the first few hours after placement.

True or false: When soluble alkali ions react with chemically active forms of silica in concrete, the concrete deteriorates.

True or false: SSPC Guide 15 details how to test for the presence of chlorides on concrete substrates.

The accumulation of fats, oils and greases (FOG) can have what negative impact on sewer systems?

According to Fred Goodwin, one of JPCL’s Top Thinkers, the three Ds negatively affecting the durability of concrete are deterioration, damage and ... what else?

True or false: Destructive testing for measuring humidity in concrete flooring requires the use of jack hammers.

With what concrete finish method are you likely to see such problems as fins, protrusions and form release agents?

What is the name of the thin, weak surface layer that forms on concrete during pouring and finishing?

Which surface defect is normally associated with concrete?

What is the name of the thin, weak surface layer of concrete that forms during pouring or finishing?

Which of the following is a common contaminant on an exterior concrete wall that should be removed before coating?


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SABRE Autonomous Solutions
The ALPHA1 provides a consistent finish day-in
day-out; job to job.

SAFE Systems, Inc.
Portable Dust Collectors for Tough Environments
Trailer and skid-mounted models in numerous sizes, powered by electric and/or diesel. Sloped roofs, multiple dust inlets, high static, dampered fans. Lockable power & drive compartments.

Tarps manufacturing, Inc.
QUALITY MADE IN AMERICA —Available near you!
CLICK to get a behind-the-scenes look at how Tarps Manufacturing makes the highest-quality tarps right here in the USA — available nationwide.

Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors
Vacuum and dust collector hose, filters and related accessories.

Bullard Made in the USA

Sky Climber, LLC
Solutions in Suspended Access
Safely reach workspaces regardless of size or purpose with our full line of Hoists, modular Platforms, and versatile Workcages.

HoldTight Solutions Inc.
Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802

NLB Corporation
NLB Sure Shroud: Greater Protection and Flexibility
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.

KTA-Tator, Inc. - Corporate Office
Instrument Service Department
Are you a QP certified contractor? KTA’s Instrument Service Department can help keep you compliant!
Click or call 1-800-KTA-GAGE.

CHLOR*RID International Inc.
Companies that invest in corrosion control use CHLOR RID products
  • Soluble salt removal liquid
  • Test kits to verify contamination levels
  • Surface passivation to hold the blast
INFO@CHLOR-RID.COM 800.422.3217


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