ThomasNet News Logo
Sign Up | Log In | ThomasNet Home | Promote Your Business

ASTM proposes standard on viscotesters for road materials.

Print | 
Email |  Comment   Share  
October 9, 2009 - ASTM has proposed WK25108, Test Method for Measurement of Apparent Viscosity of Asphalt-Rubber or Other High Viscosity Binders by Using a Rotational Viscotester (Field Method). Being developed by Subcommittee D04.44 on Rheological Tests, it will guide use of instruments for measuring viscosity of asphalt-rubber, which must be manufactured to proper consistency at project site. Committee member George Way notes participation in task group developing WK25108 has been strong.

Proposed ASTM Rotational Viscotester Standard to Aid in Quality Control for Asphalt-Rubber Binders

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

ASTM International
100 Barr Harbor Dr., Box C700
West Conshohocken, PA, 19428-2959

Press release date: October 6, 2009

W. CONSHOHOCKEN, Pa., October 6, 2009 - More frequent worldwide use of asphalt-rubber binders in road building has increased the need for rotational viscotesters, which are used to ensure proper quality control and assurance. While an appropriate standard for viscotesters does not currently exist, a proposed new ASTM standard will answer this need.

The proposed standard, WK25108, Test Method for Measurement of Apparent Viscosity of Asphalt-Rubber or Other High Viscosity Binders by Using a Rotational Viscotester (Field Method), is being developed by Subcommittee D04.44 on Rheological Tests, part of ASTM International Committee D04 on Road and Paving Materials.

According to George Way, a D04 member, consultant and volunteer chairman of the Recycled Tire Engineering and Research Foundation, the increase in use of asphalt-rubber can be traced to 1994, when ASTM D6114/D6114M, Specification for Asphalt-Rubber Binder, was first approved.

"Asphalt-rubber is a mixture of a maximum 85 percent asphalt binder and a minimum of 15 percent crumb rubber derived from recycled waste tires," says Way. "Because of the unique nature of asphalt-rubber, it must be manufactured to proper consistency (viscosity range) at the project site to ensure its benefits. The most practical way to check the consistency at the project site is with the handheld viscotester."

Way says that, from both the supplier and user perspectives, if the consistency of asphalt-rubber is too low, the asphalt-rubber will be too low in viscosity, too watery and will run off the stone. However, if the consistency is too high, asphalt-rubber will be too stiff, will not be able to pump through the hot plant or if pumped will be too viscose in the pavement, hard to compact and prone to ravel off the road.

"The routine use of the handheld viscotester for checking and controlling the quality of the product at a production site in real time is somewhat unique," says Way. "Other asphalt materials are typically not routinely checked or tested at the project or at time of construction but often after the paving is complete."

While Way notes that participation in the task group developing WK25108 has been strong, all interested parties are welcome to participate in the continuing development of the proposed standard. For technical information, contact: George Way, Consulpav, Scottsdale, Ariz. (phone: 480-990-9451; Committee D04 will meet Dec. 8-10 during December committee week in Atlanta, Ga.

ASTM International welcomes and encourages participation in the development of its standards. ASTM's open consensus process, using advance Internet-based standards development tools, ensures worldwide access for all interested individuals. For more information on becoming an ASTM member, please contact Dan Smith, ASTM International (phone: 610-832-9727;

Established in 1898, ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions around the globe.

Barbara Schindler, ASTM International
Phone: 610-832-9603;,
Print | 
Email |  Comment   Share  
Contacts: View detailed contact information.


Post a comment about this story

(your e-mail address will not be posted)
Comment title:
To submit comment, enter the security code shown below and press 'Post Comment'.

 See related product stories
More .....
 See more product news in:
 More New Product News from this company:
ASTM Workshop to address additives in biomedical polymers.
Oil Training Course examines sampling, testing, evaluation.
Radiant Barrier Systems Standards approved by ASTM committee.
Training Course addresses hazards in oxygen systems.
More ....
| Featured Manufacturing Jobs
 Other News from this company:
ASTM/NIBS Workshop on Building Science Education in North America
Fatigue and Fracture of Metallic Medical Materials and Devices
ASTM International Compilation on Silica and Associated Respirable Mineral Particles
Guidance for Potential Solar Photovoltaic Investors to Be Provided in Proposed ASTM Standard
Test for Sustained Air Performance of Central Vacuum Cleaning Units Approved as ASTM Standard
More ....
 Tools for you
Watch Company 
View Company Profile
Company web site
More news from this company
E-mail this story to a friend
Save Story
Search for suppliers of
Trade Associations

Home  |  My ThomasNet News®  |  Industry Market Trends®  |  Submit Release  |  Advertise  |  Contact News  |  About Us
Brought to you by        Browse ThomasNet Directory

Copyright © 2014 Thomas Publishing Company. All Rights Reserved.
Terms of Use - Privacy Policy

Error close

Please enter a valid email address