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Daily Quiz (34)


True or false: With periodic field maintenance, a coating system for steel bridges with a zinc-rich primer and typically used midcoats and topcoats can exceed a service life of 100 years, according to a JPCL article on the subject.


True or false: A silicate paint is always a zinc-rich paint.


True or false: In a laboratory study of zinc-rich primers for marine environments, recently reported in JPCL, coatings applied over surface preparation by UHP waterjetting, even though it produced no roughness, achieved performance equivalent to, or better than, that achieved by abrasive blasting.


True or false: Organic zinc-rich coatings are solvent-borne; inorganic zinc-rich coatings are water-borne.


Which of the following is a typical binder for an organic zinc-rich coating?


True or false: Zinc-rich coatings protect steel mainly by inhibiting corrosion.


True or false: According to a study reported in JPCL, two-coat systems comprised of zinc-rich primers and high-build polyaspartic topcoats were markedly inferior in performance to three-coat systems comprised of zinc-rich primers, intermediate coats, and moisture-cured polyurethane topcoats on Virginia bridges after ten years of service.


Which of the following is bad advice about spraying zinc-rich coatings?


True or false: Some organic zinc-rich coatings have silicate binders.


In what way is a zinc-rich primer “rich?”


Which statement about zinc-rich primers is not true?


What kind of zinc-rich coating has an epoxy binder?


What special mixing equipment is required for zinc-rich paints?


True or false: Organic zinc-rich coatings offer a higher level of galvanic protection than inorganic zinc-rich coatings.


What special mixing equipment is required for zinc-rich paint?


True or false: Based on a study of coatings for offshore platforms reported in JPCL, fluoropolymer topcoats replaced polyurethanes in an oil company’s specification.


True or false: Organic zinc-rich coatings are not recommended for the repair of galvanizing.


True or false: ASTM has solvent resistance tests for both inorganic and organic coatings.


True or false: A zinc silicate primer is classified as an organic zinc-rich primer.


True or false: SSPC has a standard for a single-coat zinc-rich painting system.


True or false: Zinc-rich coatings work extremely well in protecting steel substrates in predominantly wet, highly alkaline exposure environments.


True or false: If a zinc-rich coating has an epoxy binder, it is classified as both an organic and an inorganic zinc-rich coating.


True or false: If a zinc-rich primer has a silicate binder, it is classified as an inorganic rather than an organic zinc-rich.


True or false: Organic zinc-rich coatings are sometimes recommended for the repair of damaged areas on galvanizing and inorganic zinc-rich-coated steel.


True or false: Organic zinc-rich coatings are generally more tolerant of deficient surface preparation than inorganic zinc-rich coatings.


When spraying zinc rich coatings, why is it useful to have the spray pot or container positioned at or above the level of the work?


What special mixing equipment may be required for zinc-rich paints?


What special mixing equipment is required for zinc-rich paints?


True or false: Organic zinc-rich coatings resist higher temperatures than inorganic zinc-rich coatings.


True or false: If a zinc-rich coating has a silicate binder, it is classified as an organic zinc-rich.


Which of the following is bad advice about spraying zinc-rich coatings.


In what way is a zinc-rich primer “rich?”


True or false: Inorganic zinc-rich coatings are more surface tolerant than organic zinc-rich coatings.


Zinc-rich primers offer what kind of protection to steel?


 
 
   

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