Cyclic triaxial tests on saturated/unsaturated iron ore fines and sandy soils.

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Other Title
  • 飽和･不飽和状態にある鉄鉱粉と砂質土の繰返し三軸試験
  • ホウワ ・ フホウワ ジョウタイ ニ アル テッコウフン ト スナシツド ノ クリカエシ サンジク シケン

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Abstract

In order to investigate the liquefaction properties of iron ore fines and sandy soils under saturated and unsaturated conditions, a series of cyclic triaxial tests was conducted. Their liquefaction resistances under unsaturated condition were higher than those under saturated condition. The ratio of liquefaction resistance under unsaturated condition to that under saturated condition increased with the decrease in the degree of saturation, or with the increase in the volumetric strain due to compression of pore air, while their relationships for iron ore fines and Inagi sand were quantitatively different from those for Toyoura sand. By considering swelling potential due to reduction in effective stress, a new parameter called volumetric strain ratio was introduced, and more unique relationships could be obtained with the ratio of liquefaction resistance.

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 66 (6), 569-572, 2014

    Institute of Industrial Science The University of Tokyo

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