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

 

Problem Solving Forum

| More

September 13 - September 19, 2010

Animal fat in slaughterhouses often penetrates concrete surfaces. If the fat is not removed before the concrete is coated, the fat can cause the coating to fail. How do you identify and remove the contamination before coating the concrete?


Selected Answers

From Glenn Summers of Conselcor Inc. on September 17, 2010:
Any contaminant within the gel-pore/capillary system of concrete has the potential to cause a coating failure. I take the approach that all concrete should be sealed from within the matrix prior to any coating operation. Identifying a contaminant type is not as important as is introducing a penetrating sealer to form a solid inside to stabilize the concrete. In the case of animal fats I have noted that, after a steam wash, my sealer will penetrate and expel fat from deep in the matrix up and out to the surface. Another wash to remove expelled contaminants is then followed by another application of the sealer to penetrate and form a solid in the capillary voids. Now I have a stabilized concrete that does not allow an internal chemistry or contaminant to compromise the surface bond of a coating.

From Luis Tapia of CPPQ on September 16, 2010:
Animal or another oil contamination is always a big problem to coating application over concrete surface. Concrete is porous and absorbs oil. You will know if there is oil on concrete by the water drop test, but I prefer dry methods like UV light. In my experience, a sucessfull way to resolve that problen is scarifying and resurfacing with an epoxy or cementicius grout. Other materials require use of water; and water on concrete will generate other problems because it stays for long time. Eng. Luis Tapia SSPC PSC Jet Flooring Systems CPPQ Peru.

From Jorge Lizarraga of International Paint on September 13, 2010:
Animal fat can be recognized using an ultraviolet light. If there is animal fat, we´ll see a blue fluorescence in the surface. We can remove it using a tensioactive in solution with water, and if the tensioctive isn´t enough, treat the surface with alternating washes with solvent(SSPC-SP 1) and tensioactives. I could wash several floors of a gas station, and then paint them succesfully.

Please sign in to submit your answer this question    

Tagged categories: Concrete


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!
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
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.
 

 
Corrosion Probe, Inc.
 
From Detection to Correction
 
Corrosion Probe, Inc. has the Most Concrete Coatings Experience and Expertise. Contact us today at
860-767-4402, www.cpiengineering.com
 

 
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
 

 
NLB Corporation
 
NLB Sure Shroud: Greater Protection and Flexibility
 
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.
 

 
CHLOR*RID International Inc.
 
HOLD*BLAST: Buy time for pennies per sq ft.
 
* Stop flash rust
* Vapor blasting
* Wet blasting
* UHP water jetting
* No residue
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-TATOR LABORATORY SERVICES
 
• Coating failure analysis
• Independent
  comparative testing
• Accelerated
  weathering testing
• Toxic metals testing
• A2LA Accredited
Contact: Cindy O'Malley,
at 412-788-1300 x180
 

 
Axxiom Manufacturing
 
Schmidt Introduces
the New miniBRS
 
Reduced in size, it is incredibly easy to maneuver and operate! The perfect alternative to larger blast & recovery units when project space is limited.
Call 1-800-231-2085
 

 
Blastox/The TDJ Group, Inc.
 
Blastox® - One Step Lead Abatement
 
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!
1(800)-252-7869
 

 
 
 

Technology Publishing Co., 2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951

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