Effect of inter-particle strength on K0 correlation for granular materials

Jong-Sub Lee, G. Kim, I. Kim, D. Kim, B. Byun

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

2 Citations (Scopus)

Abstract

The coefficient of lateral earth pressure at rest K0 is an important state soil variable that is necessary to characterize the in-situ stress state of natural soil deposits. In this study, the values of K0 measured for various granular materials were analyzed and the effect of inter-particle strength on the K0-φ′ correlation was presented. The inter-particle strength was referred to as the surficial frictional resistance mobilized on the contact areas of adjacent soil particles. The measured K0 values indicated that denser and more angular materials tend to produce lower K0 values, likely due to the interlocking effect as postulated by the Jaky's K0 equation. It was also seen that neither the critical-state friction angle nor the peak friction angle for the Jaky's K0 equation produced close match to the measured K0 values. The use of peak friction angle in fact underestimated the values of K0. A new K0 correlation model based on the inter-particle strength analysis was presented. The effect of interlocking on the lateral effective stress was taken into account for the inter-particle strength K0 correlation model. It was shown that the inter-particle strength model well described the dependency of K0, a state variable, on the internal friction angle of soil, a strength parameter.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
PublisherAustralian Geomechanics Society
Pages1003-1007
Number of pages5
Volume2
ISBN (Electronic)9780994626127
Publication statusPublished - 2016
Externally publishedYes
Event5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 - Gold Coast, Australia
Duration: 2016 Sep 52016 Sep 9

Other

Other5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016
CountryAustralia
CityGold Coast
Period16/9/516/9/9

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ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics
  • Soil Science

Cite this

Lee, J-S., Kim, G., Kim, I., Kim, D., & Byun, B. (2016). Effect of inter-particle strength on K0 correlation for granular materials. In Proceedings of the 5th International Conference on Geotechnical and Geophysical Site Characterisation, ISC 2016 (Vol. 2, pp. 1003-1007). Australian Geomechanics Society.