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Daily Quiz (27)


True or false: Osmotic blistering of coatings on steel substrates can be caused by chloride contamination on the steel prior to painting.


True or false: If there are non-burst blisters in a tank lining, the lining must be immediately replaced.


When the recently deceased Mark Schilling wrote in a JPCL article, “I do not advocate the specification of 'sniff tests' because I don’t know how to calibrate a nose,” he was discussing what coating failure phenomenon?


True or false: “Solvent pop” occurs because of hackles in a steel substrate.


True or false: Oil contamination of the atomizing air in an air spray system can cause fish eyes in the coating film.


True or false: Solvent entrapment within a coating can cause the formation of blisters.


True or false: Osmotic blisters are likely to be filled with liquids that contain solvents or salts.


What kind of corrosion is caused by the formation and collapse of bubbles?


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


Retained water-soluble solvents within a coating film in immersion or continuous high moisture service will, most likely, lead to what kind of failure?


What is a common term for osmotic blistering of coatings due to thermal gradients?


True or false: In coating and surfacing work, bug holes are small cavities in wood substrate caused by insects.


True or False: Peeling, flaking, and delamination are examples of cohesive paint failures.


What does the coating failure term “crazing” mean?


Where does a cohesive failure of a coating occur?


Which of the following coating failure types is an instance of a vertical cohesive failure?


Where does a cohesive coating failure occur?


If a coating failed prematurely because it was formulated improperly, what kind of record would help an applicator defend himself?


True or False: Outside conditions can contribute to coating failure inside a structure.


True or false: Studies about coating failures universally agree that mistakes in contractors’ workmanship cause the majority of failures.


True or false: One study found that engineer/specifiers were as much to blame as painting contractors for coating failures.


Exceeding a recoat window would most likely lead to what type of coating failure?


Which of the following is a possible cause for delamination of a coating?


True or false: When a coating is applied to a wood surface degraded by exposure to sunlight, the coating can fail because of the weakness in the surface layer.


What does the coating failure term "crazing" mean?


Mud-cracking is most likely to be a coating defect with what type of coating?


Which of the following is a likely cause of blistering of coatings?


 
 
   

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