PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

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 Joe 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

Advertisements
 
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
 
Sherwin-Williams Oil & Gas App
 
Our coatings and linings expertise available 24/7, allowing you to explore the best Sherwin-Williams solutions for oil refineries, shale drilling sites, and offshore. Android users
click here. Download today!
 

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

 
SAFE Systems, Inc.
 
Portable Blast &
Recovery Equipment
 
Trailer or skid mounted blast and recovery equipment. Systems designed for maximum versatility, environmental compliance
and overall cost savings.
Call 1-800-634-7278
 

 
Jotun Paints Inc.
 
Jotachar JF750 - The Time Saving Solution
 
The only mesh free solution for jet fire scenarios. Jotachar saves installation time and material costs - the next generation of epoxy passive fire protection.
 

 
BASF
 
New resins from BASF will have metals loving water!
 
Excellent corrosion resistance, low VOC, high gloss, thin films www.basf.us/industrialcoatings dpsolutions@basf.com 800-231-7868
 

 
PPG Protective and Marine Coatings Group
 
We Protect and Beautify the World
 
PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.
 

 
Fischer Technology Inc.
 
NEW Protective Coating Inspection Website
 
Click Here!
 

 
SABRE Autonomous Solutions
 
Repeatability
 
The ALPHA1 provides reliable results consistently allowing you to cost your next job with confidence.
 

 
Advanced Recycling Systems
 
ADVANCED RECYCLING SYSTEMS (ARS)
 
Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210
 

 
 
 

Technology Publishing Co., 2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings 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