Daily Quiz (26)


Pigments that overlap one another in a coating film and thereby create a tortuous path for the migration of moisture to the substrate beneath the coating have what name?


True or false: A moisture content of 15%, as measured by a moisture meter, is generally considered the upper limit for successful painting of wood.


True or false: Some instruments used to test moisture in concrete or masonry walls are based on the principle of electrical impedance.


True or false: Radio frequency technology is sometimes used in instruments for detection of moisture levels in concrete.


When assessing the moisture content of wood with an electronic moisture meter, what moisture level is generally considered the upper limit for successful painting?


True or false: Some instruments used to detect moisture levels in concrete employ electrical impedance technology.


True or false: The anhydrous calcium chloride test for measuring moisture in concrete slabs is a quantitative rather than a qualitative test.


True or false: All the ASTM test methods for measuring moisture in concrete are non-destructive.


True or false: The anhydrous calcium chloride test for measuring moisture in concrete slabs is a quantitative rather than a qualitative test.


True or false: When assessing the moisture content of wood with an electronic moisture meter, a moisture level of 30 percent is generally considered the upper limit for successful painting.


True or false: SSPC has a guide for determining the moisture content of concrete and masonry walls and ceilings.


ICRI and what other organization certify moisture-testing inspectors?


True or false: SSPC has a guide for determining moisture content of EIFS and stucco, among other substrate types.


True or false: Both SSPC and ICRI offer training in moisture testing of concrete slabs.


True or false: Moisture meters based on electrical impedance testing indicate the presence of moisture only on the surface of CMU walls.


True or false: The calcium chloride moisture test for concrete, ASTM F1869, measures the amount of moisture emission in only about the top inch of a slab’s depth.


What organization offers a certification in moisture testing of concrete slabs?


True or false: Some moisture meters based on conductivity readings can be used on both wood and concrete substrates.


True or false: Laitance, sealers and other surface contaminants do not have to be removed prior to performing a moisture test on a concrete floor slab, according to a recent JPCL article.


What organization is developing the Guide for Detection of Moisture in Walls and Ceilings?


True or false: The plastic sheet method of detecting moisture in concrete substrates can be used only on floors or other horizontal surfaces.


ASTM standards describe how many methods of measuring moisture in concrete?


Meters for determining moisture content of concrete slabs are based on what principle of operation?


What organization offers a certification for persons who test the moisture content of concrete slabs?


True or false: A hygro thermometer is used to measure the moisture content and temperature of insulation on hot piping.


True or false: Five methods are available for determining the presence of moisture in concrete floor slabs, and all are addressed by ASTM standards.


 
 
   

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