Daily Quiz (7)


Researchers are using the seed of which fruit for a new technique to strengthen and heal concrete?


True or false: An adhesive failure of a coating layer occurs at the bottom of the layer; a cohesive failure occurs at the top of the layer.


True or false: Photographic standards are sometimes used to assess the degree of cracking of exterior coatings.


True or false: The threat of mud cracking in highly pigmented paints applied at high film builds is likely to be diminished in coating films that employ spherical pigments.


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


True or false: The threat of mudcracking in thick, heavily pigmented coatings is more likely with spherical than with platey pigments.


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


 
 
   

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