Combined TDR and P-Wave Velocity Measurements for the Determination of In Situ Soil Density--Experimental Study

This article presents a new and alternative nondestructive approach that measures soil density and water content. Specifically, it measures the dielectric permittivity and the P-wave velocity in soils as the water content is increased. These values are then related to the volumetric water content, porosity, and skeleton shear stiffness, necessary to back-calculate the density and water content of the tested soil specimens. This alternative approach does not require removal of soil and shows the potential of yielding accurate measurements of in situ density and water content. Results from the preliminary laboratory tests indicate that the measured density by the develop procedure has a difference of around 10% of the calculated density based on weight-volume measurements. Test results show a potential for developing a new device. Electronic equipment and sensors for the proposed device include a Time Domain Reflectometry (TDR) system, miniature piezoelectric accelerometers, signal conditioner system, and oscilloscope for data acquisition.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
• Authors:
  • Fratta, Dante
  • Alshibli, Khalid A
  • Tanner, William M
  • Roussel, Lynne
• Publication Date: 2005-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 553-563
• Serial:
  • Geotechnical Testing Journal
  • Volume: 28
  • Issue Number: 6
  • Publisher: ASTM International
  • ISSN: 0149-6115
  • EISSN: 1945-7545
  • Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html

Subject/Index Terms

• TRT Terms: Accelerometers; Backcalculation; Data collection; Electronic equipment; Experiments; In place density; Laboratory tests; Measurement; Moisture content; Nondestructive tests; Oscilloscopes; Porosity; Sensors; Soil tests; Testing equipment; Time domain reflectometers
• Uncontrolled Terms: Signal conditioner system; Soil density; Wave velocity
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01007276
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 15 2005 4:31PM