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Daily Quiz (12)


At what level of permeability is a coating general considered to be breathable?


True or false: Lamellar pigments are valuable in increasing the permeability of coatings.


True or false: Negative-side waterproofing applied to dry interior surfaces has to have some water-vapor permeability.


Epoxies for green concrete, with less than 28 days of cure, should have what attributes?


True or false: An impermeable barrier coating works best on a masonry wall.


True or false: The greater the permeability of a coating on concrete, the more effectively it will perform.


True or false: According to one study reported in JPCL, the ability to resist permeation of sewer gases is a very significant performance attribute of coatings used in the headspaces of sewage collection systems.


True or False: Negative-side waterproofing applied to dry, interior surfaces must possess no water-vapor permeability.


An elastomeric coating is most noted for what property?


A Barcol Impressor measures what characteristic of a coating?


True or false: Generally, materials with a permeance of greater than 1.0 perm are considered breathable.


True or false: Film-forming coating systems on exterior masonry or concrete walls should exhibit water vapor permeability or breathability.


 
 
   

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