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

AGC Chemicals
LUMIFLON®Resins Featured on Famous Blue Bridge

LUMIFLON based coatings can last up to 30 years without fading, offering a low-maintenance solution that retains color and gloss and can be field-applied


Axxiom Manufacturing
Revolutionary Units

By integrating Schmidt's Aftercoolers with our blast pots, these systems remove moisture from air and minimize equipment footprint on jobsite.
Call 1-800-231-2085


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


U.S. Zinc
Historic Reliability. Innovative Performance.

We offer custom grades and packaging of zinc dust, oxide, metal and fines, U.S. Zinc provides direct shipping to locations worldwide. U.S. Zinc – Helping the world work™


Clemco Industries Corp.
Global engineering-trusted solutions

For more than 70 years, Clemco has provided the highest quality blast equipment with a total commitment to comfort and safety.


WINOA Group
W Abrasives - Surf Prep Pack

Experts in surface preparation are not working only on greens. To discover the SURF PREP PACK dedicated to experts, come to visit us during the GIFA (Hall15 - D14).


Atlas Material Testing Technology

Helping You Put Your Products To The Test

• Outdoor Accelerated
Weathering
• Laboratory Testing
Services
• Accelerated Weathering
Instruments

www.atlas-mts.com atlas.info@ametek.com


CHLOR*RID International Inc.
Free Webinar

Learn about soluble salts, along with a discussion on allowable levels.
More information at
www.chlor-rid.com,

800-422-3217


CS Unitec
Surface Prep & Material Removal

CS Unitec’s Floor Planers remove coatings & corrosion from concrete & metal surfaces. Produce keyed profiles for waterproofing applications. info@csunitec.com

 
 
 
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