Application example: Field Velocity Resistivity Probe (FVRP) for predicting pore pressure parameter B

Jong-Sub Lee, Hyung Koo Yoon

Research output: Contribution to journalArticle

Abstract

Even though the pore pressure parameter B is essential to understand the soil condition, directly obtaining this value in a field test is difficult. The objective of this study is to propose a method for deducing B based on the elastic wave velocity measured in the field. In this study, the Field Velocity Resistivity Probe (FVRP), which has already been introduced in “Journal of Soil Dynamic and Earthquake Engineering” is selected to demonstrate the extension of the application. The wave propagation theory is applied, and B is rewritten in terms of the bulk moduli of the skeleton (Ksk), grain (Kg), and mixture (Kmix). This high-sensitivity parameter is ordered as Kmix, Kg, and Ksk. The bulk moduli of the skeleton and grain are determined by referring to a previously performed study, and the bulk modulus of the mixture is calculated using the compressional and shear wave velocity. B is close to unity with the average B value being calculated to be 0.9867. Even though the site is completely saturated, the reason for the small B value is the characteristic of the soil, which is highly compacted and in a consolidated condition. This result demonstrates that it is possible to determine B in the field through the elastic wave velocity, and the applicability of FVRP is excellent.

Original languageEnglish
Pages (from-to)214-217
Number of pages4
JournalSoil Dynamics and Earthquake Engineering
Volume107
DOIs
Publication statusPublished - 2018 Apr 1

Keywords

  • Bulk modulus
  • Elastic wave velocity
  • Field test
  • Field velocity resistivity probe (FVRP)
  • Pore pressure parameter B

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology
  • Soil Science

Fingerprint Dive into the research topics of 'Application example: Field Velocity Resistivity Probe (FVRP) for predicting pore pressure parameter B'. Together they form a unique fingerprint.

  • Cite this