Problem Solving Forum

| More

May 8 - May 12, 2017

What is the best method of testing for moisture content in concrete masonry unit (CMU) walls prior to application of coatings?


Selected Answers

From Zenith Czora of Parex Davco on January 11, 2018:
There are 5 standard test methods in detecting moisture in concrete. If you don't have any moisture meters, either the electrical impedance type or the radio frequency type, then the best and quickest option is using the Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method. This method is a qualitative test and does not really measure moisture content but shows evidence of moisture and whether the moisture is moving toward the wall, in which case the CMU wall is typically ready for coating application. This test involves covering the surface of the CMU wall with impermeable material such as plastic sheet. A 460X460-mm square of 0.1-mm thick plastic sheet is placed on the CMU wall surface and sealed around the edges with tape. After 16 to 24 hours, the sheet is removed and the area is inspected for moisture or color darkening. Color darkening occurs in some instances when the moisture movement is slow and there is still a slight dampness on the surface.

Please sign in to submit your answer this question    

Tagged categories: Asia Pacific; Coating selection; Coatings Technology; Concrete masonry units (CMU); EMEA (Europe, Middle East and Africa); Latin America; Moisture detection; North America


Current PSF Question | Submit a PSF Question | Full PSF Archive

Advertisements
 
Tarps manufacturing, Inc.

 
Modern Safety Techniques

 
Mitsubishi Gas Chemical America

 
KTA-Tator, Inc. - Corporate Office

 
AWWA (American Water Works Association)

 
Sauereisen, Inc.

 
DeFelsko Corporation

 
Fischer Technology Inc.

 
SAFE Systems, Inc.

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

PaintSquare the Journal of Protective Coatings & Linings 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 PaintSquare.com   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us