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- W4229758445 abstract "PreviousNext No AccessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2007Summary of New Developments in TDR for SoilsAuthors: Vincent P. DrnevichPE, PhDRobert L. NowackPhDVincent P. DrnevichSchool of Civil Engineering, Purdue University, West Lafayette, Indiana 47907Search for more papers by this author and Robert L. NowackDept. of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907Search for more papers by this authorhttps://doi.org/10.4133/1.2924615 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Time Domain Reflectometry (TDR) is a method to determine the electromagnetic properties of soils and recent research indicates that TDR is an increasingly powerful tool to assess the engineering properties of soils. There were symposia and workshops on this topic held in 1994 and 2001 at Northwestern University and one in September 2006 at Purdue University. The authors were among the organizers of TDR 2006: 3rd International Symposium and Workshop on Time Domain Reflectometry for Innovative Soils Applications (TDR 2006) at Purdue University on September 17–20, 2006. There were five keynote presentations and thirty‐five paper presentations with much discussion among the more than 70 researchers and practitioners from agricultural engineering, agronomy, electrical engineering, geotechnical engineering, soil science, and soil physics. The five themes were: 1) TDR Calibration in Challenging Media, 2) Geotechnical Applications of TDR, 3) Innovations, Challenges, and Future Opportunities, 4) TDR Probe Design and Selection, and 5) Hydrologic Applications of TDR. Papers to TDR 2006 are available free of charge on line at https ://engineering.purdue.edu/TDR . This paper presents highlights of some interesting papers to TDR 2006. Items to be discussed include: effects of geometrical and interfacial factors on effective permittivity, improved methods for volumetric water contents for pavement bases and subgrades, cone penetrometers to measure permittivity and conductivity, a new TDR source signal that is non dispersive, and soil texture characterization from TDR waveforms. Unfortunately only a few of the many excellent papers could be highlighted. The paper concludes with a quotation from the presentation of G. Clarke Topp, the acknowledged father of modern TDR for soil moisture measurement.Permalink: https://doi.org/10.4133/1.2924615FiguresReferencesRelatedDetails Symposium on the Application of Geophysics to Engineering and Environmental Problems 2007ISSN (online):1554-8015Copyright: 2007 Pages: 1557 publication data© 2007 Copyright © 2007 The Environmental and Engineering Geophysical SocietyPublisher:Environmental & Engineering Geophysical Society HistoryPublished: 30 Sep 2008 CITATION INFORMATION Vincent P. Drnevich and Robert L. Nowack, (2007), Summary of New Developments in TDR for Soils, Symposium on the Application of Geophysics to Engineering and Environmental Problems Proceedings : 109-118. https://doi.org/10.4133/1.2924615 Plain-Language Summary PDF DownloadLoading ..." @default.
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