Evaluation of mechanical characteristics of volcanic soil "shirasu" with various fines content

Taichi Hyodo, Hirokazu Akagi, Suguru Yamada, Masayuki Hyodo

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

Abstract

Shirasu is a volcamic soil which is widely distributed in South Kyushu in Japan. It contains non plastic fines which was created by its fragment of coarse particles. In this study, a series of bender element tests on Shirasu was performed with varying its fines content. As a result, it was observed that the shear modulus of Shiarasu was decreased with increasing the fines content although void ratio decreased as fines content increased. However, it was found that there is a unique relationship between shear moduli of Shirasu and the equivalent granular void ratio, in which the proper contribution factor b for fines was assumed. Based on the findings in the study, an empirical formula to express the shear moduls of Shirasu with various fines content was developed as the function of the fines content, the equivalent granular void ratio and the effective confining stress.

Original languageEnglish
Title of host publication5th China-Japan Geotechnical Symposium
PublisherPeople's Communications Press
Pages149-155
Number of pages7
ISBN (Print)9787114105821
Publication statusPublished - 2013 Jan 1
Event5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering - Chengdu, China
Duration: 2013 May 182013 May 19

Publication series

Name5th China-Japan Geotechnical Symposium

Conference

Conference5th China-Japan Geotechnical Symposium: New Advances in Geotechnical Engineering
CountryChina
CityChengdu
Period13/5/1813/5/19

Keywords

  • Bender element test
  • Fines content
  • Shear modulus
  • Shirasu
  • Volcanic soil

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Hyodo, T., Akagi, H., Yamada, S., & Hyodo, M. (2013). Evaluation of mechanical characteristics of volcanic soil "shirasu" with various fines content. In 5th China-Japan Geotechnical Symposium (pp. 149-155). (5th China-Japan Geotechnical Symposium). People's Communications Press.