Rutting at WesTrack: Final Report Due This Month
|A forthcoming report explains why test
sections at WesTrack developed rutting after carrying automated trucks for just a few
The team of independent experts investigating the premature rutting at WesTrack has
finished its final report, and the report is scheduled to be available next month. The
investigative team was assembled last fall after several test sections at the Federal
Highway Administration's (FHWA) hot-mix asphalt test track in Nevada developed rutting
after carrying traffic for just a few days.
In its preliminary report (see Focus, October 1997), the team outlined the most
likely causes of the rutting and made several recommendations for preventing rutting in
similarly designed asphalt mixes. To validate its conclusions and recommendations, the
team asked FHWA to perform an extensive series of laboratory tests on materials from
WesTrack. Those tests were completed in January, and the results were reviewed by the
investigative team in February. The team's final report will reflect the findings of those
tests. The test data will be available on request from FHWA.
The final report will be available from FHWA. It will also be published on the
The team has also developed a Superpave mix design guide to help inexperienced mix
designers with the procedure. The guide will be part of the final report.
For more information, contact John D'Angelo at FHWA (phone: 202-366-0121; fax:
202-366-7909; email: firstname.lastname@example.org)
or Chris Williams at FHWA (phone: 703-285-1018; fax: 703-285-2767; email: email@example.com).
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