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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

This report is an archived publication and may contain dated technical, contact, and link information
Publication Number: FHWA-HRT-08-035
Date: March 2008

LTPP Computed Parameter: Moisture Content


  1. Jiang, Y.J., and Tayabji, S.D. Analysis of Time Domain Reflectometry Data from LTPP Seasonal Monitoring Program Test Sections - Final Report, FHWA-RD-99-115, Federal Highway Administration, 1999.
  2. LTPP SMP (CD-ROM), Version 1.2, Federal Highway Administration, 2004.
  3. Rada, G.R., Elkins, G.E., Henderson, B., Sambeek, R.J., and Lopez, A., LTPP Seasonal Monitoring Program: Instrumentation Installation and Data Collection Guidelines, Report No. FWHA-RD-94-110, Federal Highway Administration, 1995.
  4. FHWA-LTPP Technical Support Services Contractor. LTPP Manual for Falling Weight Deflectometer Measurements Operational Field Guidelines, Federal Highway Administration, 2000.
  5. Klemunes, J.A. Determining Volumetric Moisture Using the Time Domain Reflectometry Response, M.S. Thesis, University of Maryland, 1995.
  6. Klemunes, J.A., Determining Soil Volumetric Moisture Content Using Time Domain Reflectometry, FHWA-RD-97-139, Federal Highway Administration, 1998.
  7. Roth, K., Schulin, R., Fl├╝hler, H., and Attinger, W. Calibration of Time Domain Reflectometry for Water Content Measurement Using a Composite Dielectric Approach, Water Resource Research, Vol. 26, No. 10, 1990.
  8. Topp, G.C., Davis, J.L., and Anna, A.P. Electromagnetic Determination of Soil Water Content: Measurement in Coaxial Transmission Lines, Water Resource Research, Vol. 16, No. 3, 1980.
  9. LTPP Information Management System, Database Scheme and QC specification for SMP_TDR_MANUAL_MOISTURE Tables-Draft Final, Federal Highway Administration, 2002.
  10. Das, B.M. Principles of Geotechnical Engineering, PWS Engineering: Boston, 1985.
  11. Lytton, R.L. Backcalculation of Pavement Layer Properties, Nondestructive Testing of Pavements and Backcalculation of Moduli. ASTM 1026. (A.J. Bush III and G.Y. Baladi, eds.), American Society of Testing Materials: Philadelphia, 1989, pp. 7-38.
  12. Shen, L.C., and Kong, J.A. Applied Electromagnetism, Brooks/Cole Engineering Division: Monterey, CA, 1983.
  13. Hashin, Z. Theory of Composite Materials, in Mechanics of Composite Materials, Pergamon Press: Oxford, UK,1969, pp. 201-242.
  14. Tummers, B. DataThief III manual v.1 b, http://www.datathief.org/, 2005.
  15. Interpretation of Manual TDR Traces. Long Term Pavement Performance Program Directive SM-28, FHWA, August 7, 1998.


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