| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise



Daily Quiz (22)

True or false: Relative humidity sensors used to determine moisture content of concrete slabs can produce fairly accurate results within an hour after probes are inserted into a slab, according to a manufacturer of the test equipment.

When assessing the moisture content of wood with a suitable moisture meter, what level of moisture is generally considered to be the upper limit for successful painting?

How can a hygro thermometer be useful in coating work?

What is another name for wet storage stain?

True or False: The plastic sheet method is a quantitative test for determining the extent of moisture in a concrete slab.

True or False: Relative humidity at the surface of bridge steel may be different from the relative humidity in the atmosphere away from the steel surface.

What does the anhydrous calcium chloride test measure?

True or False? Many coating manufacturers recommend a maximum relative humidity of 40% within a concrete slab before their flooring products are applied.

True or False? Before electronic instruments became available to measure dew point and relative humidity directly, surface temperature thermometers were used to derive these readings.

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

True or False: Air leakage into a building can generate much more moisture than moisture vapor transmission can.

True or false: To hold the blast (prevent re-rusting of blasted steel) inside a tank, one effective measure is to use dehumidification to keep relative humidity below 50%.

True or false: There are no quantitative methods for determining levels of moisture in concrete floor slabs.

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

True or false: The density of concrete prevents water vapor and gases from moving freely within the matrix.

Instruments used to test moisture in concrete or masonry walls are based on what principle?

True or false: The most accurate meters for detecting moisture within a concrete substrate are based on readings of temperature and humidity.

Why would a test for moisture content of concrete be important prior to application of thick-film elastomeric coatings?

Dried salt deposits on a brick exterior (see photo), resulting from moisture leakage through a wall, are called what?

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

True or false: Both relative humidity and temperature differentials from one side to the other can drive moisture vapor through a block wall.

True or false: A moisture content of 30%, as measured by a moisture meter, is generally considered the upper limit for successful painting of wood.


Graco Inc.
Graco Mortar Pump

The M680 sprays epoxy-based mortars, anti-skid coatings, cementitious and filled materials. Compact.
Easy to use.
Call 877-844-7226 or

Nationwide Overspray
Profession Overspray Removal Services

The Finest Name in Safe Overspray Removal. We specialize in removing all contaminants from any surface. Family Owned and Operated for 33 years! Fully insured. Satisfaction is guaranteed.

SABRE Autonomous Solutions
Safety, Productivity, Quality. Robotic Blasting

Learn how this simple to use, field deployed, automatic robot is eliminating hazards in major confined, cluttered and complex surface preparation projects.

SSPC: The Society for Protective Coatings
SSPC 2016 Register Now!

SSPC2016 is earlier this year, don't forget to book your plane tickets and hotel. See you soon. For more information visit

International Paint/AkzoNobel
Interplan Mobile

Effective maintenance planning and corrosion control all starts with an effective asset survey.

Armakleen Company, The
ARMEX when nondestructive cleaning is critical

When cleaning substrates that cannot be damaged the only blast abrasive to use is ARMEX. Other blast abrasives can remove surface materials damaging the substrate.

Covestro (formerly Bayer)
Bayer MaterialScience is now Covestro.

The pioneering spirit of our first 150 years will drive the bold vision of our next 150: to develop the industry’s most innovative coatings solutions.

Termarust Technologies
Termarust (HR CSA) Chemically Stops
Active Corrosion

Pipeline Utility Aerial crossings coated since 1992. Termarust's (HR CSA) was used to overcoat lead paint and preserve cables, pipes and support towers.

Dampney Co., Inc.
High Heat Stainless Steel Paint & Coating

Wood burning stoves, fire pits, BBQ Smokers, Exhaust Manifolds Aerosol Cans, Quarts, Gallons, 5 gallons 1200F resistance

Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail