PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Problem Solving Forum

| More

March 14 - March 20, 2011

How do admixtures to concrete (hardeners, anti-dust compounds, etc.) affect coating adhesion? What can be done to eliminate or minimize negative effects?



More items for Coating Materials


Selected Answers

From Jorge Lizarraga of International Paint on March 21, 2011:

     Admixtures in concrete will affect coating adhesion in several ways. One of those ways is due to closing the pores of the concrete to make it watertight, closing capillaries, making concrete surface extremely soft and impermeable for coating application.

      Hardeners don´t allow a suitable profile and  anti-dust additives will also reject the coating.  So, if the additive is on the surface of concrete, we can remove it using highly concentrated tensioctives solutions.

     If the additive is penetrated into the concrete, we must  remove the upper concrete, and replace it with new concrete or an epoxy layer. I can obtain a good surface profile in both softened and hardened concrete by using concentrated solutions of clorhidric acid (35%), checking the attack of the acid, and stopping it by washing when the profile is reached. In this way we can minimize the effect of admixtures to concrete.

Please sign in to submit your answer this question    

Tagged categories: Adhesion; Concrete


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

Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

some of the most important bridges in the country; learn about our NEPCOAT-approved system and our entire range of MCU & Polyurea coatings. 1-800-627-2968 www.wassercoatings.com


Sherwin-Williams
Nova-Plate® 325

• Extends Service Life
• Single Coat Application
• Cure to Service in 24 Hours


Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC

A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.


Polyval Coatings
Polyflex® Polyurea Linings

exhibit outstanding versatility in use; providing abrasion resistance, superior seamless waterproofing and high-chem corrosion protection. www.polyflexlinings.com


BASF
New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films basf.us/industrialcoatings
polyorders@basf.com
800-231-7868


Simpson Strong-Tie
Repair, Protect & Strengthen

Need a coating? Turn to Fox. We have solutions to repair, protect and strengthen concrete, steel and wood substrates. Call 888-760-0369 or email info@foxind.com


LS Industries
LS Blasters: Optimum Steel Cleaning Efficiency

Simplify surface prep with the precise shot control of LS Blasters. Our blast technology delivers optimum coverage and finish. 800-533-8008

 
 
 
Technology Publishing

The Technology Publishing Network

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

 
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 2000-2014, 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