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TDR 2001 PAPERS AND PROGRAMS

The 2001 Symposium will convene at Northwestern University in Evanston, Illinois on September 5-7.  As with the 1994 gathering, it embraces the diverse and growing fields of metallic and optical TDR monitoring and has drawn participants from around the world.  The preliminary program presents abstracts for the over 40 papers in the following 7 topical sessions.

Sessions will cover:
State of the Practice : Hardware : Soil Moisture
Soil Moisture Monitoring
: Subgrade Monitoring
Environmental Monitoring
: Optical TDR and Structural Monitoring
Soil and Rock Deformation Monitoring

Wednesday, September 5
7:00 am to 8:00 am Registration
7:30 am to 8:00 am Continental Breakfast
8:00 am

Morning Short Course

TDR Technology in Surveillance and Measurement
Dr. K. O'Connor, President of GeoTDR
Dan Marron, Instrumentation Specialist, ITI, Northwestern University

Learn how TDR technology has been employed as a geotechnical measurement tool. The course describes the simplicity, robustness and flexibility of TDR technology through a combination of case histories and hands-on experience with equipment from a variety of manufacturers. Discussions and demonstrations include: Slope Movement, Bridge Scour, Subsidence, Ground Control, and Leak Detection. The second half of the class will concentrate on remote monitoring of TDR and related equipment

12:00 pm Break and Refreshments
1:00 pm

Afternoon Short Course

Automated and Remote Monitoring
Dave Prine, Principal Engineer, ITI, Northwestern University
Dan Marron, Instrumentation Specialist, ITI, Northwestern University

Course provides an overview of remotely operable acquisition systems such as SOMAT and Campbell Scientific. Applications to bridge monitoring will be described extensively, including strain gauging, acoustic emission, tilt and pulse echo. Demonstrations will be given in hardware operation, remote control and software interpretation.

1:00 pm

Afternoon Short Course

Water Content and Density by TDR (The Purdue Method)
Prof. Vincent Drnevich, Civil Engineering, Purdue University

Course provides participants with hands-on experience in a new application of technology for use in earthwork and fill control for highway and other construction. The course will be in two parts: (1) discussion of theory and experimental validation, and (2) hands-on use of the equipment. The second half of the course will be conducted in the geotechnical laboratories of Northwestern University's Technological Institute

5:00 pm to 7:00 pm Registration
6:00 pm to 9:00 pm

Ice Breaker Reception

Meet colleagues and enjoy a wine and cheese reception as you browse our sponsor exhibits

Thursday, September 6
7:00 am to 8:30 am Registration
7:30 am to 8:30 am Continental Breakfast
8:30 am to 10:00 am STATE OF THE PRACTICE - Keynote Papers
Determining Soil Characteristics using TDR...Water Content and a Few Others Timo Heimovaara
IWACO Consultants
The Netherlands
Innovations in Optical Reflectometry including OTDR Keith Wanser
California State University -- Fullerton
United States
Detection of Shearing in Soft Soils with Compliantly Grouted TDR Cables Charles Dowding
Northwestern University
United States
10:00 am to 10:30 am

Break / Sponsor Exhibits

SPONSORED BY SOILMOISTURE

10:30 am to 12:00 pm

HARDWARE

Session Chair: Joel Greene

In-line TDR moisture sensors for agro-industrial processing (10:30 am) Peter Blume, Robin Fundinger, Kurt Koehler, Ruediger Ruf, and Markus Stacheder
IMKO Micromodultechnik GmbH
Germany
Evaluation of shaft-mounted TDT readings in disturbed and undisturbed media (10:45 am)

G. Topp, D. Lapen, and M. Edwards
Agriculture & Agri-Food Canada
Canada

G. Young
E.S.I. Environmental Sensors, Inc.
Canada

Determination of the Wetting Front in Drip Irrigation Using TDR Multi-Wire Probe (11:00 am) C. Souza, E. Matsura, and R. Testezlaf
UNICAMP/Reagri - Departamento de Agua e Solo
Brazil
On the use of the TDR TRIME-tube system for profiling water content in soils (11:15 am) J. Laurent, et al.
Laboratoire d'etude des Transferts en Hydrologie et Environnement
France
Calibration of CS615 and TDR instruments for Marhurangi, Tarrawarra and Point Nepean soils (11:30 am) M. Duncan, et al.
National Institute of Water and Atmospheric Research
New Zealand
A Cost Effective Soil Moisture Instrument Based on Time-Domain Transmission Measurement (11:45 am) Z.J. Sun & G.D. Young
E.S.I. Environmental Sensors Inc.
Canada
12:00 pm to 1:30 pm Buffet Lunch at the Allen Center
1:30 pm to 3:00 pm

SOIL MOISTURE

Session Chair: William Herkelrath

Full Waveform Analysis of a Non-uniform and Dispersive TDR Measurement System (1:30 pm) Chich-Ping Lin
National Chiao Tung University
Taiwan
Improved calibrations of TDR measurements using artificial neural networks (1:45 pm) Magnus Persson
Lund University
Sweden
Frequency-domain methods for extending TDR measurement
range in saline soils
(2:00 pm)
S. Jones and D. Or
Utah State University
United States
Dielectric Properties of Bound Water: Application to Porous Media Surface Area and Grain Moisture Determination (2:15 pm) J. Wraith, D. Or, and S. Jones
Montana State University & Utah State University
United States
TDR signal modelling using the electric line approach: model validation and signal inversion to retrieve soil moisture profile (2:30 pm) A. Chambarel, et al.
Laboratoire d'Hydrodynamique Complexe, Avignon University
France
TDR signal simulation using a wave guide 2D model (2:45 pm) A. Chambarel, H. Bolvin and E. Ferry
LHC, Avignon University
France
3:00 pm to 3:30 pm Break and Refreshments
3:30 pm to 4:45 pm SOIL MOISTURE ctnd.
A time domain reflectometry borehole packer for use in rock (3:30 pm) S.W. Truss, L. West, P. Winship, Y. Huang, and M. Nakhkash
Universities Leeds and Liverpool
Great Britain
Sample area of time domain reflectometry probes in
proximity to sharp dielectric permittivity boundaries
(3:45 pm)

P. Ferre
University of Arizona
United States

H. Nissen & P. Moldrup
Aalborg University

J. Knight
CSIRO

The sensitivity of time domain reflectometry probes to
spatially heterogeneous electrical conductivities
(4:00 pm)

P. Ferre
University of Arizona
United States

H. Nissen & P. Moldrup
Aalborg University

J. Knight
CSIRO

Saline clayey soil moisure measurement using time-domain reflectometry (4:15 pm) Z.J. Sun, P. Moldrup and G.D. Young
E.S.I. Environmental Sensors, Inc.
Canada
Development and applications of TDR inversion algorithms with high spatial resolution for moisture profile determination (4:30 pm)

Stefan Schlaeger & Alexander Scheuermann
University of Karlsruhe
Germany

Christof Hubner & J. Gottlieb
Karlsruhe Research Center
Germany

5:00 pm

Ad Hoc ASTM Meeting

Led by: Vincent Drnevich

Friday, September 7
7:30 am to 8:15 am Continental Breakfast
8:15 am to 9:15 am

SOIL MOISTURE MONITORING

Session Chair: Vincent Drnevich

Long Term Stability of Time Domain Reflectometry Measurements in a Multi-Year Field Experiment (8:15 am) Tracy G. Schofield
Los Alamos National Laboratory
United States
Long-Term Monitoring of Soil Moisture in a harsh climate, using Reflectometer and TDR Probes (8:30 am) G. Delin & W. Herkelrath
U.S. Geological Survey
United States
Application of the TDR Technique in Tropical Soil (8:45 am) C. Souza, E. Matsura and R. Testezlaf
UNICAMP/Feagri - Departamento de Agua e Solo
Brazil
Temperature Effect on TDR Measurement of water content of Unbound Materials (9:00 am) G. Zuo, R. Rainwater, R. Yader, E.C. Drumm & W.C. Wright
University of Tennessee
United States
9:15 am to 9:45 am Morning Break
9:45 am to 11:30 am

ROCK AND SOIL DEFORMATION MONITORING

Session Chair: Kevin O'Connor

Applications of TDR to Landslide and Slope Monitoring (9:45 am) W.F. Kane, T.J. Beck and J.J. Hughes
Kane GeoTech Inc.
United States
Calibration of Small-Diameter TDR Cables for Measuring Displacement in Physical Soil Models (10:00 am) C. Pierce and C. McAlister
University of South Carolina
United States
Measurement of Tailings Consolidation using TDR Technology (10:15 am) Kevin O'Connor
Geotechnical Consultants, Inc.
United States
TDR for Underground and Open Pit Monitoring in Canada (10:30 am) F. Charette
Atlas Copco Rock Drills
Canada
Time Domain Reflectometry to Monitor Tailings Dam Stability (10:45 am) B.P. Gorski, B. Tisch, T. Anderson, K. Judge and K. Tarr
National Resources Canada
Canada
Looping TDR Cables for Increased Sensitivity to Extension (11:00 am) C.E. Pierce, P. Adek and C.M. McAlister
University of South Carolina
United States
11:15 am to 12:15 pm Boxed Lunch - Provided by TDR 2001
12:15 pm to 2:00 pm

ENVIRONMENTAL MONITORING

Session Chair: Clarke Topp

Using time domain reflectometry for non-aqueous phase liquid saturation measurements (12:15 pm) Magnus Persson
Lund University
Sweden
A TDR System for Subsurface Pollutants Detection (I): Design & Modeling (12:30 pm) R. Said, N. Al Shawawreh and A. Mohamed
United Arab Emirates University
United Arab Emirates
A TDR System for Subsurface Pollutants Detection (II): Application & Analysis (12:45 pm) A. Mohamed, R. Said and N. Al Shawawreh
United Arab Emirates University
United Arab Emirates
Time Domain Reflecometry for the Characterization of Diesel Contaminated Soils (1:00 pm) D. Chenaf
Royal Military College of Canada
Use of TDR to Monitor Changes in Ground Water Level and Crude Oil Thickness (1:15 pm) K. O'Connor
Geotechnical Consultants, Inc.
Measuring Water Table Elevations Within Pavement Systems Using Time Domain Reflectometry (1:30 pm) R. Roberson, J. Siekmeier
Minnesota Department of Transportation
United States
Salinity compensation of a TDT instrument using slope
correction
(1:45 pm)
R. McFarlane
E.S.I. Inc.
Canada
2:00 pm to 2:30 pm Break
2:30 pm to 3:45 pm

SUBGRADE MONITORING

Session Chair: Timo Heimovaara

Determining Frost Depth in Pavement Systems Using a Multi-Segment Time Domain Reflectometry Probe (2:30 pm) R. Roberson and J. Siekmeier
Minnesota Department of Transportation
United States
Continuous measurements of liquid water content and in density in snow using TDR (2:45 pm)

Martin Schneebeli and Peter Waldner
Swiss Federal Institute for Snow and Avalanche Research
Switzerland

Christof Huebner and Alexander Brandelik
Forschungszentrum Karlsruhe
Germany

Frank Rau
University of Freiburg

Water Content and Density of Soil Insitu by the Purdue TDR Method (3:00 pm) V. Drnevich, S. Siddiqui, J. Lovell and Q. Yi
Purdue University
United States
Effects of Testing Large Particle-Sized Materials (3:15 pm) V. Drnevich, J. Lovell and Q. Yi
Purdue University
United States
Temperature Effects on Dielectric Constant Determined by Time Domain Reflectometry (3:30 pm) V. Drnevich, X. Yu, J. Lovell and J. Tishmack
Purdue University
United States
3:45 pm to 4:00 pm Break
4:00 pm to 5:00 pm

OPTICAL TDR AND STRUCTURAL MONITORING

Session Chair: Charles Dowding

OTDR distributed sensing of liquid hydrocarbons using polymer-clad optical fibers (4:00 pm) J. Buerck, S. Roth, K. Kramer and H. Mathieu
Karlsruhe Research Center
Germany
Quasi Distributed OTDR Crack Sensor for Reinforced Concrete Structures (4:15 pm) C.Z. Gu and F. Ansari
University of Illinois
United States
An overview of corrosion damage detection in steel bridge strands using TDR (4:30 pm)

W. Liu, R. Hunsperger & M. Chajes
University of Delaware
United States

E. Kunz
VETEK Systems, Corp.

Distributed Fibre Optic Sensors for the Detection of Liquid Spills (4:45 pm) Allistair MacLean, Chris Moran, Walter Johnstone and Brian Culshaw
Univeristy of Strathclyde, Scotland
Dan Marsh and Geoff Andrews
PINACL Communications, Wales