Instrumented dynamic cone penetrometer incorporated with time domain reflectometry

Geunwoo Park, Namsun Kim, Seonghun Kang, Sang Yeob Kim, Chulsang Yoo, Jong Sub Lee

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

In this study, an instrumented dynamic cone penetrometer incorporated with time domain reflectometry (IDPT) is developed to provide portable in-situ penetrometer for evaluation of ground strength and water content. The IDPT probe combines cone tip energy module with accelerometer and load cell, and time domain reflectometry (TDR) probe to simultaneously obtain transferred energy and water content. The IDPT is applied to embankment with dynamic cone penetrometer (DCP) and penetrometer incorporated with TDR probe (TDRP). In addition, the strength and water content of ground in rainfall conditions are characterized with time. Penetration indices of IDPT and DCP show similar trends in ground strength characterization, and volumetric water contents detected by IDPT and TDRP are almost identical. As water infiltrates the ground with time, the penetration index and volumetric water content increase. This study suggests that the IDPT may be effectively used for the simultaneous evaluation of ground strength and water content.

Original languageEnglish
Article number112337
JournalMeasurement: Journal of the International Measurement Confederation
Volume206
DOIs
Publication statusPublished - 2023 Jan

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2021R1A5A1032433).

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Dynamic cone penetrometer
  • Penetration index
  • Portable in-situ device
  • Time domain reflectometry (TDR)
  • Volumetric water content

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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