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The PaintSquare Guide to Zinc-rich (inorganic)

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Daily Quiz (28)

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True or false: The porosity of inorganic zinc-rich coatings increases over time after they are applied.

Thursday, March 13, 2014


True or false: The MEK solvent rub test (ASTM D 4752) and the coin rub test are both used to provide an estimate of the cure of an inorganic zinc-rich coating.

Monday, March 10, 2014


True or false: With zinc-rich coatings on steel, the zinc becomes the anode in a galvanic cell and sacrifices itself to protect the cathode, the underlying steel.

Tuesday, February 18, 2014


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

Tuesday, February 18, 2014


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.

Thursday, February 13, 2014


What solvent is used in the solvent rub test for cure of inorganic zinc coatings?

Tuesday, January 14, 2014


What is the name of the contacting surfaces of joints in steel structures formed with the use of high-strength bolts?

Thursday, November 7, 2013


True or false? A recent JPCL article explains that waterborne zinc-rich epoxy primers must be three-component materials.

Tuesday, June 4, 2013


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

Monday, May 20, 2013


True or false: Inorganic zinc-rich coatings are appropriate for use on slip-critical surfaces of steel joints.

Thursday, December 6, 2012


True or false: In multi-coat systems, it is not always the case that the higher the zinc loading in a zinc rich primer, the better the system performance will be.

Friday, April 20, 2012


When can you safely topcoat an inorganic zinc rich coating?

Friday, November 4, 2011


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

Tuesday, September 27, 2011


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?

Tuesday, August 9, 2011


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

Monday, July 11, 2011


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

Wednesday, June 8, 2011


True or false: The SSPC standards SSPC-Paint 20 and SSPC-Paint 29 contain both performance and composition requirements for zinc-rich coatings.

Thursday, May 12, 2011


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

Monday, March 7, 2011


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

Wednesday, January 19, 2011


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

Tuesday, January 18, 2011


True or false: Inorganic zinc-rich coatings, normally used as primers in multi-coat systems, have sometimes been used as single-coat systems on bridges and other structures.

Thursday, December 9, 2010


Why will painters sometimes apply a mist coat to inorganic zinc-rich primers before applying a full topcoat?

Tuesday, November 30, 2010


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

Wednesday, November 24, 2010


Which of these is the most common defect encountered with inorganic zinc-rich coatings?

Wednesday, November 17, 2010


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

Tuesday, October 12, 2010


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

Tuesday, September 28, 2010


Which of the coating types below are likely to be acceptable for use on faying surface of steel structures?

Monday, August 9, 2010


True or false: inorganic zinc-rich coatings, because of their somewhat porous nature, must be topcoated to be effective in preventing corrosion.

Monday, August 9, 2010


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