Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays

Jun Hwan Lee, Kyungbum Seo

Research output: Contribution to conferencePaper

Abstract

The compressibility of clays is an important design consideration for constructions in soft clay deposits. The piezocone penetration test can be effectively used for characterizing mechanical states and depth profile of saturated clays. While various methods using piezocone penetration test results have been proposed, most of them have focused on the mobilization of the excess pore pressure and coefficient of consolidation. Little attention has been given to the assessment of compressibility. This is mainly because no volume change is measured during the penetration and dissipation process. In this study, the assessment of long-term compressibility for normally consolidated clays, as represented by the compression index, is explored. For this purpose, coupled correlation of time, volume change and stress is introduced. For verifying the methodology presented in this study, several case examples are adopted and used to compare measured and predicted results.

Original languageEnglish
Publication statusPublished - 2011 Dec 1
Event14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 - Hong Kong, China
Duration: 2011 May 232011 May 27

Other

Other14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
CountryChina
CityHong Kong
Period11/5/2311/5/27

Fingerprint

compressibility
Compressibility
dissipation
Clay
penetration test
clay
volume change
Clay deposits
Pore pressure
soft clay
Consolidation
pore pressure
mobilization
consolidation
penetration
compression
methodology
testing
case studies

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

Cite this

Lee, J. H., & Seo, K. (2011). Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays. Paper presented at 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, China.
Lee, Jun Hwan ; Seo, Kyungbum. / Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays. Paper presented at 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, China.
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Lee, JH & Seo, K 2011, 'Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays' Paper presented at 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, China, 11/5/23 - 11/5/27, .

Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays. / Lee, Jun Hwan; Seo, Kyungbum.

2011. Paper presented at 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, China.

Research output: Contribution to conferencePaper

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N2 - The compressibility of clays is an important design consideration for constructions in soft clay deposits. The piezocone penetration test can be effectively used for characterizing mechanical states and depth profile of saturated clays. While various methods using piezocone penetration test results have been proposed, most of them have focused on the mobilization of the excess pore pressure and coefficient of consolidation. Little attention has been given to the assessment of compressibility. This is mainly because no volume change is measured during the penetration and dissipation process. In this study, the assessment of long-term compressibility for normally consolidated clays, as represented by the compression index, is explored. For this purpose, coupled correlation of time, volume change and stress is introduced. For verifying the methodology presented in this study, several case examples are adopted and used to compare measured and predicted results.

AB - The compressibility of clays is an important design consideration for constructions in soft clay deposits. The piezocone penetration test can be effectively used for characterizing mechanical states and depth profile of saturated clays. While various methods using piezocone penetration test results have been proposed, most of them have focused on the mobilization of the excess pore pressure and coefficient of consolidation. Little attention has been given to the assessment of compressibility. This is mainly because no volume change is measured during the penetration and dissipation process. In this study, the assessment of long-term compressibility for normally consolidated clays, as represented by the compression index, is explored. For this purpose, coupled correlation of time, volume change and stress is introduced. For verifying the methodology presented in this study, several case examples are adopted and used to compare measured and predicted results.

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Lee JH, Seo K. Coupled correlation of long-term compressibility and PCPT dissipation results in NC clays. 2011. Paper presented at 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011, Hong Kong, China.