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

Paint and Coatings Industry News

Main News Page


ASTM Updates Standards for Pavement Markings

Monday, August 16, 2010

Comment | More

ASTM International has developed one new standard and revised a second one regarding testing and practices involving pavement marking paints.

Using a Chamber to Test Drying Rate

D7539 - Standard Practice for Using a Test Chamber for Humidity Conditioning of Test Panels of Pavement Marking Paints is a new standard that describes the use of a test chamber to test the drying rate of waterborne pavement marking (traffic) paints.

As ASTM notes, the drying rate of organic coatings varies with changes in temperature, air flow, and relative humidity. In particular, the drying rate of waterborne paints depends on the evaporation of water and thus is much more dependent on relative humidity than are solvent-based paints or paints that are 100% solids.

Measurement of the rate of drying of waterborne paints under ambient conditions in laboratories cannot be adequately replicated without some control of the drying conditions. This standard describes a test chamber that provides a means of controlling relative humidity above ambient humidity and minimizing the effects of air flow variability at ambient room temperatures.

If desired, the test chamber can be placed without water in it and with vents wide open in a temperature- and humidity-controlled room to test dry speed at various temperatures, as well as humidity while using the chamber to minimize the effect of air flow.

This practice is particularly useful for testing the drying rate of waterborne pavement marking (traffic) paints where fast dry at elevated ambient humidity is an important feature, ASTM says. For waterborne traffic paints, the test chamber can be used to evaluate dry to no-pick-up (Test Method D711) and water wash-off resistance (Practices D7377 and D7538) at elevated ambient humidity.

Evaluating Traffic Paint Wear

D913 - Standard Practice for Evaluating Degree of Traffic Paint Line Wear has been revised (with title change) to D913-10. This practice is designed to evaluate the resistance of a traffic paint to wear. The performance of paint applied to a bare road surface may not guarantee similar results when the same paint is applied over old paint lines.
 
This practice covers the evaluation of degree of resistance to wear that may occur with traffic paints (traffic markings) in road tests (see Practice D713) or in actual service, using photographic standards for comparative evaluation.

   

Tagged categories: ASTM; Certifications and standards; Performance testing; Waterborne coatings

Comment Join the Conversation:

Sign in to our community to add your comments.

SSPC: The Society for Protective Coatings
http://www.sspc.org/

Join SSPC and Enhance
Your Career !


Clemco Industries Corp.
Powerful Protection in a Small Package

Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.


Mohawk Garnet
Enska by Mohawk Garnet™

A safe, efficient and economical abrasive alternative to slag and sand products. More information
at 1.866.642.7638 or info@mohawkgarnet.com Email for follow up – mheilimo@mohawkgarnet.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


DeFelsko Corporation
PosiTector Dew Point Meter

Measures and records
environmental conditions
during surface prep and
painting. 4 Models
Available – Standard
or Advanced features,
Built-in or Separate probe.


PaintSquare
SSPC 2014 Product Demos

Watch product demos by SSPC 2014 exhibitors. Check them out now!


Sherwin-Williams
Heat-FLex® Hi-Temp 1200

Improved Corrosion
Resistance
Enhanced Durability
Faster Shop Throughput

 
 
 
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