CPTU dissipation behavior of overconsolidated clay

W. J. Lee, T. J. Kim, S. I. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In normally clays and silts, excess pore pressures due to piezocone penetration show a monotonically decreasing response with time, but dissipation tests performed in heavily overconsolidated soils show dilatory behavior. Therefore, available solutions proposed for normally consolidated soils do not adequately evaluate the response of pore water pressure in overconsolidated soils. In order to predict the coefficient of consolidation in non-standard dissipation curve, the distribution characteristics of individual excess pore pressure components (Δu oct & Δu shear) are studied. The influence zones of the octahedral and shear components due to penetration are estimated by theoretical framework and experimental method. In this study, the predicted distribution results at OCR=10 and OCR=20 are compared by the piezocone penetration results in Korea University Calibration Chamber.

Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering
Subtitle of host publicationGeotechnology in Harmony with the Global Environment
Pages717-719
Number of pages3
Publication statusPublished - 2005
Event16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005 - Osaka, Japan
Duration: 2005 Sep 122005 Sep 16

Publication series

NameProceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment
Volume2

Other

Other16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment, ICSMGE 2005
CountryJapan
CityOsaka
Period05/9/1205/9/16

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

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