Mechanical properties of coral-silt composite soils evaluated on the basis of skeletal structure of coral gravels

• Watabe Yoichi

  Soil Mechanics and Geo-environment Group, Port and Airport Research Institute

• Kaneko Takashi

  Soil Mechanics and Geo-environment Group, Port and Airport Research Institute

• Sassa Shinji

  Soil Dynamics Group, Port and Airport Research Institute

Abstract

Coral gravel soils, which are composite soils consisting of finger-coral fragments and silt matrix, are often found in coastal regions of sub-tropical islands. In this study, for reconstituted soils with various coral gravel fractions up to 44% that was the densest package, a series of triaxial CU-bar and CD tests was conducted to study determination method for soil design parameters in consideration of interaction between soil skeleton consisted of coral fragments and silt matrix. The soil parameters were significantly influenced by volumetric percentage of coral fragments in association with particle interaction and particle crush, when the percentage was larger than 20% for the coral gravel soils examined in this study.

Journal

• Japanese Geotechnical Society Special Publication

  Japanese Geotechnical Society Special Publication 2 (14), 547-551, 2016

  The Japanese Geotechnical Society

Keywords

• coral gravel soil
• triaxial test
• soil skeleton
• particle crush

Details

• CRID: 1390001205764048000
• NII Article ID: 130005123874
• DOI: 10.3208/jgssp.jpn-089
• ISSN: 21888027
• Web Site: https://www.jstage.jst.go.jp/article/jgssp/2/14/2_JPN-089/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed