Fast time domain reflectometry (TDR) measurement approach for investigating the liquefaction of soils

Scheuermann, A., Hubner, C., Wienbroer, H., Rebstock, D. and Huber, G. (2010) Fast time domain reflectometry (TDR) measurement approach for investigating the liquefaction of soils. Measurement Science and Technology, 21 2: 025104.1-025104.11. doi:10.1088/0957-0233/21/2/025104


Author Scheuermann, A.
Hubner, C.
Wienbroer, H.
Rebstock, D.
Huber, G.
Title Fast time domain reflectometry (TDR) measurement approach for investigating the liquefaction of soils
Journal name Measurement Science and Technology   Check publisher's open access policy
ISSN 0957-0233
1361-6501
Publication date 2010-02
Sub-type Article (original research)
DOI 10.1088/0957-0233/21/2/025104
Volume 21
Issue 2
Start page 025104.1
End page 025104.11
Total pages 11
Editor Peter Hauptmann
Place of publication Bristol, England
Publisher IOP Publishing
Collection year 2011
Language eng
Abstract Time domain reflectometry (TDR) was used for the spatial observation of transient density changes in a laboratory shake-box apparatus. Shake-box experiments are conducted to investigate the liquefaction of soils due to seismic excitation. As a sensor, a flat ribbon cable was placed within a water saturated sand column two metres in height. In the experiment, the soil column was excited at its base with a sinusoidal signal with low frequencies and moderate amplitudes. During the tests, TDR measurements were conducted with a repetition rate of 30 s(-1). Temporal density changes during the liquefaction and reconsolidation process of the quartz sand along the sensor could be shown through signal analysis. The mean porosities calculated from the relative dielectric permittivity using a soil-specific calibration function could be determined with an RMSD-value of 0.02 compared to the porosities determined from the height of the sample. With the metrological set-up for the TDR measurements being used, fast temporal changes in the density profile could be qualitatively visualized indicating the movement of the reconsolidation front during the liquefaction.
Keyword time domain reflectometry
density measurement
spatial and temporal changes
soil liquefaction
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 025104

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2011 Collection
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 7 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 07 Feb 2010, 00:02:33 EST