| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise


Download our free Specialty Function Coating Systems eResource Book

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

Carboline Company
Fireproofing Solutions

Pyroclad® X1 Thermo-Lag® Pyrocrete® – protecting against hydrocarbon and jet fires, explosions, and cryogenic spills.

New resins from BASF will have metals loving water:

Excellent corrosion resistance, low VOC, high gloss, thin films

Sherwin-Williams Protective & Marine Coatings

With 4,000 distribution points and 3,700+ years of experience, Sherwin-Williams delivers the products, support and expertise you need, right where you need it.

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.

Jessup Manufacturing Company
More Traction for Extreme Marine Conditions

Jessup Safety Track® 3800 Military Grade peel-and-stick non-skid tapes and treads provide extra slip resistance for decks. MIL-PRF-24467C Type XI, Black & Gray.

Polyval Coatings
Polyflex® Polyurea Linings

Polyflex™ new Polyurea Geotextile Membrane System has been specifically engineered to protect the environment in containment applications.

Corrosion Probe, Inc.
From Detection to Correction

Corrosion Probe, Inc. has the Most Concrete Coatings Experience and Expertise. Contact us today at

DeFelsko Corporation
PosiTector 200 for concrete

Rugged, simple and affordable coating thickness gage for concrete measures protective coatings including polyurea.

International Paint/AkzoNobel
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.

AW Chesterton
ARC Protective Coatings

perform reliably under the most demanding exposures in the toughest process conditions. Use our Coating Selector Tool for your application needs at

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   |   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