Implementing the M-E Pavement Design Guide in Iowa

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2005-05-01
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Coree, Brian
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Ceylan, Halil
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Institute for Transportation
InTrans administers 14 centers and programs, and several other distinct research specialties, and a variety of technology transfer and professional education initiatives. More than 100 Iowa State University faculty and staff work at InTrans, and from 200 to 250 student assistants from several ISU departments conduct research while working closely with university faculty. InTrans began in 1983 as a technical assistance program for Iowa’s rural transportation agencies.
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The reliability of the 1993 AASHTO Pavement Design Guide design method is questionable. The guide is based on methods that have evolved from theAASHTO Road Test (1958–1961). Through a number of editions from the initial publication (1962), the interim guide (1974), and other later editions, minor changes and improvements have been published. Nonetheless, these later modifications have not materially altered the original methods, which are based on empirical regression techniques relating simple material characterizations, traffic characterization, and measures of performance. In addition, the current AASHTO Pavement Design Guide does not provide performance prediction of pavements.

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Sat Jan 01 00:00:00 UTC 2005
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