PaintSquare.com


The First Word in Protective & Marine Coatings

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

Free Download of

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

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.


Atlantic Design, Inc.
POWER ON WITH ADI!

The most air flow possible… In the smallest package imaginable… For a price you won’t believe! 866.Call.ADI


JPCL Europe
In the NEW issue:

Offshore wind turbine protection, avoiding adhesion failures, new inspector course on subsea insulation, and much more! jpcleurope.com


Montipower, Inc.
The MBX Bristle Blaster

Get a 2.7 to 3.3 mil profile and a Near White Metal Clean. For info visit www.mbxit.com or call 877 629-8777


ITW Binks
Built for Tough Jobs

From Epoxies to Urethanes to other high solid coatings, the new Binks Airless 75 delivers a great finish using an ergonomic design. Visit binks.com for more information.


NLB Corporation
VacLance cleans up as you work

Add vacuum recovery to any NLB rotating water jet lance with a VacLance attachment and vacuum source. Model DM32283 works vertically, horizontally and in corners.


Stable Lead (maker of FESI-BOND)
The ultimate lead stabilizing blast additive.

Stable Lead’s FESI-BOND BLAST X1, the only green, nontoxic, lead stabilizing additive in the abrasive blast and paint industry; X1 is transforming our industry!

 
 
 
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