PaintSquare.com


The First Word in Protective & Marine Coatings

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

Chemical & Petrochemical Plant Coating Systems

Problem Solving Forum

| More

July 16 - July 22, 2012

Which factors are most important in selecting coatings for new concrete?



More items for Coating Materials


Selected Answers

From Jerry Trevino of Protective Liner Systems on September 12, 2012:
     This question is too broad to answer; however, the factors include how old is the new concrete, the composition of the concrete, water to cement ratio used, type of curing used such as heat, admixtures, sunlight, temperature of curing period, moisture of curing environment, placement methods used, curing agents if any used, chemical resistance of coating required, aesthetic requirements, life of coating expectancy, limitations on surface prep methods, purpose of the coating application, temperature exposure, sunlight exposure, control and/or expansion joint considerations,etc. I am sure there are a many more factors to consider.

From John Fauth of ChemMasters, Inc. on July 17, 2012:
     If the concrete is uncured and freshly placed, you may wish to choose a coating with curing properties meeting ASTM specifications (ASTM C 309 or ASTM C 1315). If the concrete is cured, it would be important to know by what means in order to determine if removal of a curing compound or additional surface preparation is required. Of course, surface preparation is essential for any concrete coating... rely upon the project specification and thoroughly understand the coating manufacturer's recommendations to ensure they are consistent. Same goes for application, where it may be necessary to use a primer, monitor slab and ambient temperature, humidity, dew point, the weather forecast, and a host of other factors.

From Kurtis Gundersen of KGP coatings on July 16, 2012:
Use latex or epoxy. Oil-based paints saponify due to the alkalinity of the concrete materials.

From Larry Stephans of Sabur Technologies on July 17, 2012:
     Many factors come into play when selecting concrete coatings. Start with service: Is this a concrete tank in which the coating will be immersed? Then consider the other conditions of this service such as temperature, chemical composition of contained material, etc. If the concrete is a floor, consider such parameters as traffic load, exposure to chemicals from splash and spill, cleaning, etc. Once you define the service, then look at coating types. Epoxies are probably the most common coating type, but there are new products coming to market seemingly every day.

From J. Greiner of Odle, Inc. on September 10, 2012:
To answer this question you need more information. What process or environment is the concrete going to endure? Is it a new or existing structure? Do we need to worry about crack bridging and movement? Epoxies do have the best adhesion to concrete and frequently are used as a primer in coating systems.

From James Albertoni of CA Department of Water Resources on July 19, 2012:
 Don't forget to address hydrostatic pressure if the concrete is in contact with soil. If there is high groundwater on the soil side of the concrete and no moisture barrier or waterproofing on the soil side, the hydrostatic pressure can cause severe failures of most any coating system.

From Mark Schilling on July 17, 2012:
The question is incomplete. It only considers the nature of the substrate to which the coating is to be applied. The much larger question is - what is the coating supposed to do for you other than "stick?" Epoxies can provide high build and good chemical resistance. but they do not weather well and they may not look good after a while. Latex paint will likely weather better, but you will need multiple coats to cover and the chemical resistance may be inadequate. In any case - beware. Some latex paints are subject to saponification. If you go with a latex paint, make sure it is a 100% acrylic. Modifications from that baseline can build-in a susceptibility to saponification. I have seen that problem many times on homes where the exterior paint is regularly wetted by the lawn and garden sprinkler system.

Please sign in to submit your answer this question    

Tagged categories: Coating selection; Concrete coatings and treatments


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

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.


Sherwin-Williams
Nova-Plate® 325

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


Polyval Coatings
Polyflex® Polyurea Linings

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


International Paint LLC

International Paint Engineered Coatings

Learn about our solutions for:
  • Structural Steel
  • Piping & Equipment
  • Storage Tanks
  • Pressure Vessels
  • Secondary Containment


    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


    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


    GMA Garnet USA
    GMA Garnet™
    Natural Abrasives

    - Superior cleaning
      performance
    - Even Profile
    - Low Dust
    - Cost-Effective
    - Environmentally friendly
    - Recyclable up to 5 times
    Tel : +1 832 243 9300

  •  
     
     
    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