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- W4380484993 abstract "The falling weight deflectometer (FWD) is the most common nondestructive testing device used to evaluate the structural capacity of highway and airport pavements. While FWD testing is simple and prevalent, the accurate backcalculation of pavement layer properties has been challenging. The use of static modeling for backcalculation has significant limitations, especially for rigid or thick and stiff flexible structures that are common for airport pavements. Research suggests dynamic backcalculation offers significant advantages over static backcalculation by modeling the inertial effects, the viscoelastic behavior of the asphalt concrete layer, and the damping behavior of the subgrade layer. The FWD deflection time histories contain a wealth of information that are unique to each pavement structure. The static backcalculation methods make use of the FWD peak deflections, whereas the traditional dynamic backcalculation methods use the peak deflections and the time delay between the peak deflections and the peak load. In this paper, the authors explore different parameters from the FWD time histories for use in dynamic backcalculation through a parametric study. The dynamic backcalculation is then performed using the recommended parameters for a flexible pavement structure built at the Federal Aviation Administration’s (FAA) National Airport Pavement Testing Facility (NAPTF) at Atlantic City International Airport, New Jersey." @default.
- W4380484993 created "2023-06-14" @default.
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- W4380484993 date "2023-06-13" @default.
- W4380484993 modified "2023-09-27" @default.
- W4380484993 title "Effects of FWD Deflection Time History Parameters on Dynamic Backcalculation" @default.
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- W4380484993 doi "https://doi.org/10.1061/9780784484890.031" @default.
- W4380484993 hasPublicationYear "2023" @default.
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