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The European Tyre Recycling Association and the RPA are teaming up to sponsor and coordinate a major conference November 14 - 17, 2000 in Vialamoura, Portugal. The conference organizing companies, Consulpav, Recipneu, and Recipav, have strong ties to both associations.
The conference will provide a three-day overview of Asphalt-Rubber technology featuring papers on binders, hot mix properties, specifications, production, recycling, cost benefit analysis, design guidelines, laboratory and field comparisons of performance, and APT research. A-R chip seal and cape seal strategies will also be discussed.
A partial listing of speakers reveals a good mix of academia, research organizations, agency representatives, and associates. Among the list are several RPA advisors, members, and associates including Dr. Gary Hicks, OSU (ret); Dick Stubstad, California; Larry Smith, Florida DOT (ret); George Way, ADOT; RPA president Mark Belshe, FNF Construction; and RPA past president Jeffrey Smith, Modified Asphalt Technologies.
Other well known U.S. A-R authorities include Dr. Shakir Shatnawi, Caltrans; Prof. John Harvey, UC, Berkeley; and Anne Stonex, Pennsylvania Research Council. Other countries represented are the Republic of South Africa, Australia, Germany, and Portugal.
Dr. Jorge Sousa, conference chairman, said the technical committee includes Drs. Gary Hicks, Shakir Shatnawi, Maria Antunes, LNEC Portugal; Christian Such, Germany; and Prof. Alex Visser, Univ of Pretoria, RSA.

Call for papers
Abstracts for papers maybe submitted through February 1, 2000 to Asphalt-Rubber 2000 Conference c/o Consulpav, P.O.Box 700, Oakview, CA 93022, USA. (Phone: 805-649-1211, Fax: 805-649-1111).
Conference registration is $650 US until June 1, 2000 and $730 through October 1. Late registration is $820. Information may also be obtained from the RPA (480-517- 9944) or the ERTA (32-26-49-79-15) or erta@euronet.be or consulpav.com/AR2000.

 

Dr. Han Zhu, associate professor of Civil and Environmental Engineering at Arizona State
University, and Douglas Carlson, RPA director of government relations, in front of the RPA

Crumb rubber papers published

Dr. Han Zhu, associate professor of Civil and Environmental Engineering at Arizona State University, and Douglas Carlson, RPA director of government relations, have teamed up on two papers dealing with crumb rubber.
Zhu is the principle investigator in a research project sponsored by the Arizona Department of Environmental Quality to develop new products that can use large quantities of crumb rubber. Carlson, with a Business Administration degree from ASU, is assisting Zhu in the research.
The paper, A Spray Based Crumb Rubber Technology in Highway Noise Reduction Application, details Zhu's research in developing a crumb rubber based material to spray on highway sound barriers. ADOT is also participating in the study.
Preliminary tests on the spray applied crumb rubber based product (sometimes referred to as Zhugoo) indicates its application to existing sound barriers produces a significant reduction in traffic noise.
The research also indicates that the product is extremely cost effective and has the potential for using large quantities of scrap tire rubber.
The paper has been submitted to the Journal of Solid Waste Technology and Management. Inquiries about the product can be addressed to Zhu at the Department of Civil and Environmental Engineering, Arizona State University, Tempe, AZ 85281 or by e-mail to han.zhu@asu.edu.
A second paper, Asphalt-Rubber -An Anchor to Crumb Rubber Markets, was presented by Carlson at the Third Joint UNCTAD / IRSG (United Nations) workshop on rubber and the environment at the International Rubber Forum in Vera Cruz, Mexico on October 7.
The paper chronicles the history of A-R and the development of the industry. It provides an overview of tire program management in the U.S., previews new crumb rubber technologies, and offers some thought provoking suggestions for waste tire solutions.
The paper will be published in the forum proceedings and copies may be obtained from the RPA library on the Internet at www.rubberpavements.org/library.