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Daily Quiz (15)


A recent D+D In Depth article on floor coatings recommended what action to combat high alkalinity at the surface of a concrete slab?


True or false: Some causes of blistering of concrete floor coatings are air entrapment in pores of the concrete, osmotic pressure and insufficient cleaning of the concrete surface.


True or false: Laitance, sealers and other surface contaminants do not have to be removed prior to performing a moisture test on a concrete floor slab, according to a recent JPCL article.


True or false: SSPC is developing a quantitative coatings texture guide as an aid in specifying flooring systems that will improve traction on floors expected to be wet or covered with contaminants.


True or false: The installed cost of thick-film resinous coating systems, such as high-build epoxies and polyureas, on concrete floors ranges from $3.50 to $7.00 per square foot, according to a recent D+D In Depth article.


True or false: According to a recent D+D article, maintenance procedures and costs for polished concrete floors can be up to 70% lower than for other floor coverings.


True or false: According to a JPCL article, trowel-applied mortar systems for concrete floors can include walnut shell aggregates.


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


True or false: Non-osmotic blisters can develop in coatings on concrete floors.


True or false: Some concrete floor finishes are more tolerant to moisture than others.


True or False? Many coating manufacturers recommend a maximum relative humidity of 40% within a concrete slab before their flooring products are applied.


True or false: Opaque stains produce color on a concrete floor by reacting chemically with the concrete.


True or false: There are no quantitative methods for determining levels of moisture in concrete floor slabs.


True or false: Using dyes on concrete floors eliminates the non-uniformity of color that is a trademark of acid stains.


True or false: Mobile UV-cure machines are now used to achieve rapid return to service after coating of concrete floors.


 
 
   

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