PaintSquare.com
      | Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise
  

 

Problem Solving Forum

| More

October 11 - October 17, 2010

How do I determine when a cementitious-based mortar used to repair exterior concrete is ready to be coated?


Selected Answers

From David Grove of Shaw Nuclear Power Services on November 9, 2010:
The criteria for what you are asking should be based strictly upon what you are trying to do. If you are going to paint the surface for barrier- type protection, then preforming a plastic sheet test is only part of the answer. I would suggest that you contact the technical service department of the coatings manufacturer for more specifics. Cementitous grout is like regular concrete and most manufacturers require a minimum cure of 28 days, but will concede to a minimum hardness and no moisture. Be careful that the plastic sheet method requires a seal around the edges. Many only use tape and do not consider that the irregular surface will invalidate the results.

From remko tas of Futuro SRL on October 26, 2010:
An inexpensive way to determine if the humidity level of the concrete is low enough to be coatedis to tape a medium- sized plastic sheet to the surface in the evening and see if there is any condensation on the inside in the morning. You can also use special humidity gauges for concrete.

Please sign in to submit your answer this question    

Tagged categories: Concrete coatings and treatments


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

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.


SSPC: The Society for Protective Coatings
http://www.sspc.org/

Join SSPC and Enhance
Your Career !


Modern Safety Techniques
Modern Safety Techniques

With our unique LTCat, we can help to provide clean, safe breathing air to your workers. Take a look at our Breathing Air Systems, we supply at least twice as much charcoal as our competitors! Modern


Axxiom Manufacturing
Schmidt Improves Conversion Kits

Schmidt's conversion kits turn out-of-date blast pots into high quality, efficient blasters. Quick, easy to install with step by step instructions.
Call 1-800-231-2085


U.S. Zinc
Zinc. Quality With U.S.

We provide a superior experience to each of our customers. Through added infrastructure, we have become a fully integrated REACH-registered supplier.


WINOA Group
W Abrasives : Maintenance Pack

The blasting company able to reduce your maintenance costs up to 30% by fine-tuning consumption, and increasing productivity. Visit us during the GIFA (Hall15 - D14).


US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.


International Paint LLC
Premium Low VOC Polyurethane Finish

AkzoNobel introduces Interthane 990V as a 250 g/l HAPS free polyurethane with outstanding color and gloss retention. 990V is fast curing and applicator friendly.


KTA-Tator, Inc. - Corporate Office
KTA-Tator
Coatings Inspection

Any structure, any height, any place - A qualified coatings inspector is always available. Call 800-245-6379.


Commercial Sand Blasting & Painting Ltd.
Reliable Service & Superior Workmanship

We’re ready to meet any of your protective coating and lining needs. We can work on your site or in our facilities, with large shops (60,000 sq ft), 40 acres of yard space, and cranes and forklifts on site.

 
 
 
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 PaintSquare.com   |   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 webmaster@paintsquare.com