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Category: Steel

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Daily Quiz (69)

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True or false: A black light test can detect certain oil films on a bare steel substrate.

Wednesday, August 27, 2014


What organization publishes the Standard for the Preparation of Steel Substrates for PSPC?

Monday, June 23, 2014


What is the process called when steel shot is used to improve the fatigue properties of steel?

Tuesday, April 8, 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


Which of the following methods for measuring surface profile is not described in ASTM D4417, “Standard Test Method for Field Measurement of Surface Profile of Blast Cleaned Steel”?

Tuesday, November 5, 2013


What is another name for the portable stylus instrument used to measure surface roughness of blast-cleaned steel?

Wednesday, October 30, 2013


True or False: Both zinc and aluminum are used as thermal spray materials for corrosion protection of steel.

Monday, October 14, 2013


What generic type of topcoat is often claimed to enable a two-coat system rather than a conventional 3-coat system (zinc, epoxy, polyurethane) for corrosion protection of steel?

Tuesday, October 8, 2013


What description fits Initial Condition D of steel before blasting?

Friday, August 30, 2013


True or False: SSPC’s membership rolls grew from 100 individual members at its founding in 1950 to its current 9,829 individual members (as of July 31, 2013).

Monday, August 26, 2013


What is another term for surface profile on steel?

Tuesday, May 28, 2013


True or false? Under certain conditions, weathering steel may require painting to protect it from corrosion.

Wednesday, May 22, 2013


What type of corrosion is characterized by a definite thread-like structure and directional growth under coatings on steel?

Wednesday, May 15, 2013


True or false: SSPC visual standards showing degrees of cleaning of steel take precedence over the descriptions of required cleanliness in SSPC’s written surface preparation standards.

Tuesday, April 16, 2013


Which of the following SSPC abrasive blast cleaning standards requires the most rigorous degree of cleaning of steel?

Wednesday, April 3, 2013


Why should the surface temperature of steel be at least 5 degrees higher than the dew point temperature before you blast-clean or paint?

Monday, April 1, 2013


What is the common name of high-strength, low-alloy steel that provides greater resistance to atmospheric corrosion than conventional carbon steel?

Friday, March 1, 2013


True or false: The number of surface profile peaks in abrasive-blast-cleaned steel has no effect on coating performance.

Thursday, February 14, 2013


What is the main feature of zinc that allows it to provide cathodic protection to steel?

Friday, February 8, 2013


True or false: The standard for non-destructive measurement of dry coating film thickness on concrete is different from the one used to measure dry coating film thickness on steel.

Monday, February 4, 2013


True or false: Thermal spraying of zinc is sometimes used for corrosion control on steel substrates.

Thursday, January 31, 2013


SPC-VIS 1, Visual Standards for Blast Cleaned Steel, was initially the product of another standards-writing body. Which one?

Monday, January 28, 2013


Which of the following cleaning techniques is most likely to remove soluble salts from a heavily pitted steel surface?

Wednesday, January 2, 2013


True or false: A research study by Roper, Weaver, and Brandon indicated that the number of peaks in a steel surface profile created by abrasive blasting has no effect on performance of coatings applied to the steel.

Thursday, December 20, 2012


True or false: Fire-resistant, intumescent coatings for steel are applied in one to three coats.

Tuesday, October 23, 2012


When water under pressures of 30,000-40,000 psi is used to clean steel before painting, what is this form of cleaning called?

Monday, October 22, 2012


If you’re a contractor concerned with meeting the end condition appearance requirements for steel after blast cleaning, what precaution might you take?

Tuesday, October 16, 2012


Power tools such as power wire brushes can burnish or polish a steel surface. Why is this a problem?

Wednesday, October 3, 2012


According to SSPC's Surface Preparation Commentary for Steel and Concrete Substrates (SSPC-SP COM), final dry blast cleaning should not be conducted when the steel surface is less than how many Fahrenheit degrees above the dew point?

Thursday, September 27, 2012


True or false: Thermal spray coatings of aluminum, zinc, and their alloys for corrosion protection of steel are very surface-tolerant.

Tuesday, August 28, 2012


True or false: Painting over weld spatter on steel is an accepted practice.

Wednesday, August 22, 2012


A high-strength, low-alloy steel that provides greater resistance to deterioration from atmospheric corrosion than conventional carbon steel has what generic name?

Thursday, August 2, 2012


In its Technology Guide on the subject, what type of coating material does SSPC recommend for repairing imperfections in galvanized, organic zinc-, or inorganic zinc-coated steel?

Wednesday, July 25, 2012


True or false: A combination of chemical stripping and (frozen) ice blasting has been used to remove lead-based paint from bridge steel.

Thursday, May 24, 2012


What is the typical pressure range for water jetting when it is used to remove coatings and corrosion from structural steel?

Wednesday, May 9, 2012


Among the options below, which is the most important in achieving the specified surface profile on steel when you are air abrasive blast cleaning?

Tuesday, April 10, 2012


True or false: If you are removing a soft, pliable coating from a steel surface, a rounded abrasive will be more productive than an angular one.

Wednesday, March 7, 2012


How can sponge blasting produce a profile on steel?

Friday, February 17, 2012


What happens to the existing profile on steel when UHP water blasting is used to remove rust and/or coatings?

Tuesday, February 14, 2012


When does mill scale form on steel?

Wednesday, January 11, 2012


Which of the following elements of design of steel structures is most likely to promote corrosion?

Wednesday, December 21, 2011


True or false: Abrasive blasting and other scarification techniques increase the surface area of a steel substrate and provide additional reactive sites for molecular association between paint and metal.

Wednesday, November 2, 2011


Which technique would be least likely to remove soluble salts from a steel substrate?

Tuesday, October 25, 2011


Which of the following is most likely to be the result of excessive profile depth on steel after blast cleaning?

Tuesday, October 18, 2011


Why is a black light test used on a bare steel substrate?

Thursday, October 13, 2011


What are the conditions necessary for corrosion of steel to occur?

Friday, October 7, 2011


Which of the following factors influences the appearance of steel after blast cleaning?

Friday, September 23, 2011


How does a dry film thickness measurement of a coating on steel take into account the blast profile on the steel?

Tuesday, August 30, 2011


Power tools, such as power wire brushes, can burnish or polish a steel surface. What is the main problem with this?

Thursday, August 18, 2011


Which one of the following generic coating types protects steel from corrosion by sacrificial action?

Friday, August 12, 2011


Which of the following cleaning techniques is least likely to remove soluble salts from a steel surface?

Monday, August 8, 2011


Sharp edges on steel present special challenges to the coating applicator for what reason?

Wednesday, August 3, 2011


True or false: ASTM has separate test methods for steel and concrete substrates in determining the pull off adhesion of coatings.

Friday, July 22, 2011


How can air abrasive blasting with sponge media create a profile on steel?

Thursday, July 14, 2011


Power tools such as power wire brushes can burnish or polish a steel surface. Why is this sometimes a problem?

Friday, June 17, 2011


What is most likely to help you achieve the specified profile on the steel you are blast cleaning?

Thursday, June 16, 2011


True or false: Any kind of metal can be used in coatings for sacrificial protection of steel.

Thursday, June 2, 2011


True or false: Permanent sheet pile structures are sometimes left uncoated in corrosive environments because thicker steel, rather than coatings, is used to assure design life.

Friday, May 27, 2011


Which of the following types of coatings are normally used on the faying surfaces of steel joints?

Thursday, May 19, 2011


Which of the following is not used for measuring the surface profile of cleaned steel?

Friday, May 13, 2011


True or false: SSPC visual standards showing degrees of cleaning of steel take precedence over the descriptions of required cleanliness in SSPC's written surface preparation standards.

Tuesday, February 15, 2011


True or false: In protective coatings work, "smut" refers to the metallic fines that cling to a steel substrate after it is cleaned with metallic abrasive.

Wednesday, February 9, 2011


True or false: When steel freshly cleaned by air abrasive blasting is exposed to conditions of high humidity, moisture, or a corrosive atmosphere, the discoloration that occurs is called "rust back."

Thursday, January 27, 2011


The oxide layer formed on steel during manufacture is called what?

Tuesday, December 7, 2010


What is the name of the roughened surface created on steel by abrasive blast cleaning?

Monday, November 15, 2010


Which of the methods/instruments below are used to measure surface profile of blast-cleaned steel?

Monday, November 15, 2010


True or false: weathering steel is designed for use in boldly exposed applications where there are regular wetting and drying cycles.

Wednesday, October 6, 2010


Which of the following can be a driving force for water absorption through a paint film to a steel substrate?

Wednesday, September 8, 2010


True or False: SSPC-SP 16 covers electrochemical stripping of coatings from steel substrates.

Tuesday, August 31, 2010


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