PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

PaintSquare


Problem Solving Forum

| More

October 3 - October 9, 2011

When applying a 100% solids, fast-curing polyurea coating on concrete, what is the best method for verifying that the proper thickness has been applied?

More items for Coating Application


Selected Answers

From David Cerchie of Versaflex Inc. on July 17, 2012:
The UT, stroke count and embedded metal plate methods are all suitable. Because of the very fast initial reactions of sprayed polyurea systems, wet-film measurements are virtually impossible. Furthermore, pure polyurea systems are normally 100% solids,  so wet film thickness will equal dry film thickness. Additionally, due to the fast initial cure, surface topography is not a consideration as there will be very little flattening of the coating system. Depending on the spray gun used, there can be varying amounts of air entrainment in the sprayed systems, but generally that does not effect the UT measurements if the gauge is properly set. Some polyurea manufacturers can provide compatible hand repair polyurea if destructive testing is the only available method.

From MIKE LEARNED of NEW HABIT INC on November 22, 2011:
"MIC" a coated shim!!!

From Tom Swan of M-TEST on October 4, 2011:
The two best non-destructive methods are 1) using a UT (ultrasonic thickness) gauge preset to measure coatings over concrete. If you are a UT person, you can use a regular UT gauge, but you need the proper probe with the proper gate settings. This is good up to about 150 mil coatings. 2) The second method is to put small metal plates on the surface of the concrete prior to coating at easy-to-find locations. If you have a non-ferrous gauge, you can use aluminum tape. You can then go back to these spots and use a regular dry film thickness gauge to read the coating thickness over the plates. For destructive methods, you can use a Tooke Gauge for coatings up to about 60 mils.

From massimiliano Lo Re of Studio mlr on July 13, 2012:
The question needs to specify if dry film or wet film thickness is being verified.  The topography valley of concrete substrate and its porosity must also be considered.

From Kishore Kumar K R of Nukote on October 13, 2011:
Because of air in the film, the ultrasonic gauge will not give you a proper/accurate measurement. For non-destructive measurement, use the machine strokes reading and thereby the volume for a fixed or pre-measured area. Use a digital vernier to measure.

From Mario Lefebvre of Polyval Coatings Inc on October 4, 2011:
     1) With an ultrasonic thickness gauge. 2) You can also estimate the thickness applied with the square feet + number of gallons applied. 3)You can cut a piece of the membrane, but it is a destructive test, so I try to avoid it.

Please sign in to submit your answer this question    

Tagged categories: Coating / Film thickness; Concrete; Concrete coatings and treatments; Polyurea


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

Advertisements
 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Coatings Adhesion Testers
 
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!
 

 
Strategic Materials Inc.
 
www.truabrasives.com
 
TruAbrasives™, a clean crushed glass abrasive superior to other abrasives for performance, health, and environmental benefits.
 

 
SABRE Autonomous Solutions
 
Introducing the ALPHA1 Blasting Robot
 
Once installed and commissioned – simply
SCAN PLAN BLAST.
 

 
Detail Masters
 
Overspray Removal
 
We offer professional, turnkey service and unparalleled quality!
Our process can save hundreds— even thousands of dollars. It's fast, environmentally safe and 100% guaranteed.
 

 
BASF
 
New resins from BASF will have metals loving water!
 
Excellent corrosion resistance, low VOC, high gloss, thin films www.basf.us/industrialcoatings dpsolutions@basf.com 800-231-7868
 

 
Bullard
 
Upgrade with the Bullard GenVX
 
Click here for your blast helmet.
 

 
Monti Tools, Inc.
 
BRISTLE BLASTER® – THE ORIGINAL ONE
 
  • Abrasive blast with a power tool
  • Remove corrosion, mill scale and coatings
  • Cleans & roughens
  • Meets SSPC-SP 10 / NACE No. 2
  • Profile up to 4.7 mils
  • ATEX Zone 1
  •  

     
    Fischer Technology Inc.
     
    Highly Repeatable Ultrasonic Wall Thickness Gauge
     
    Detect corrosion by monitoring wall thickness with the compact UMP series from Fischer.
     

     
    Carboline Company
     
    New product: Carbozinc® 608 HB
     
    Introducing a new high build zinc-rich primer that can save you time and money by eliminating the epoxy intermediate coat!
     

     
    Norton Sandblasting Equipment
     
    Norton Sandblasting Equipment
     
    We are a premier stocking distributor for the leading manufacturers of surface preparation equipment, industrial dust collection, vacuums and more.
     

     
     
     

    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

    Durability + Design 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   |   Site Map   |   Search   |   Contact Us