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|Title:||Pavement rutting characterization using deflection basin parameters|
Thompson, Marshall R
|Abstract:||The U.S. Federal Aviation Administration’s National Airport Pavement Test Facility (NAPTF) was constructed to generate full-scale traffic test data to support the development of advanced airport pavement design procedures. During the first series of traffic tests, a six-wheel Boeing 777 gear and a four-wheel Boeing 747 gear were tested on flexible pavements until they were deemed failed. Heavy Weight Deflectometer (HWD) tests were conducted prior to and throughout the traffic testing to assess the structural integrity of pavements. An inertial profiling device was used to measure the transverse surface profiles periodically during the traffic testing to monitor the development of rut depths. The NAPTF rutting data were characterized using the simple Power model. In this study, regression models were developed to obtain the rutting model parameters, in terms of rutting potential and rutting rate, as functions of initial HWD surface deflections. The results indicated that the rutting potential is strongly related to initial surface deflections. If the rutting model (Power model) coefficients can be related to HWD structural responses, a viable rutting algorithm can be developed for use in a priori airport pavement design and management activities.|
|Appears in Collections:||IJEMS Vol.14(1) [February 2007]|
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