Instrumentation for mechanistic design implementation.
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2010-02-01
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Edition:Final report; Oct. 1, 2007-Dec. 31, 2008.
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Abstract:The Oregon Department of Transportation (ODOT) Pavement Services Unit is in the process of implementing a new pavement design ; procedure being developed under the sponsorship of the American Association of State Highway and Transportation Officials. Fatigue ; cracking is a key distress mechanism that is predicted as part of the overall process using a theoretical model calibrated to empirical data. ; Tensile strain at the underside of the hot-mix asphalt pavement layers induced by truck axle loads is, in turn, a key input into the fatigue ; cracking model. In the new design procedure tensile strain is predicted utilizing a layered elastic analysis model. ; The principal objective of the project was to obtain key information to be used to assess the validity of the predicted tensile strain via layered ; elastic analysis. This involved collecting data from an existing test site along Interstate 5 just north of Albany, Oregon and installing and ; collecting data from instruments at a new test site along US 97 in Redmond, Oregon. ; This report documents the progress made toward achieving the principal objective of the study during the contract period (October 1, 2007 to ; December 31, 2008). It provides details regarding the installation of the instruments at the Redmond site, data collection efforts at booth test ; sites, and the methodologies for reducing and analyzing the data.
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Main Document Checksum:urn:sha256:1855d34616bc56ff08e0eb27c77caa38d3d94191e77114a47d164cab35f9ea77