破砕性材料の粒子特性と一次元圧縮特性  [in Japanese] GRAINS CHARACTERISTICS AND ONE-DIMENSIONAL COMPRESSION PROPERTIES OF CRUSHABLE SOILS  [in Japanese]

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Abstract

破砕性材料の粒子特性や圧縮特性を把握するため, 4種類の破砕性材料と, その比較として2種類の石英質の砂を用い, 顕微鏡による粒子形状の画像処理, 単粒子破砕試験, 一次元圧縮試験を行った. その結果, 破砕性材料の粒子特性として, 粒子形状が石英質の砂に比べ複雑であること, 単粒子破砕強度の分散が大きいことなどを確認した. そして, 一次元圧縮試験の結果から, 粒子強度の高い石英質の砂に比べ, 破砕性材料の降伏応力は低く, それ以下の応力域においても高い圧縮性を示すことがわかった. さらに, 一次元圧縮降伏応力は単粒子破砕強度と関連があること, 圧縮曲線の曲率は粒度分布や粒子形状に依存することが明らかとなった.

The one-dimensional compression test, single particle crushing test and observation by microscope were carried out for four kinds of crushable soil and two kinds of silica sand. The particle roughness and single particle crushing strength variability of crushable soils were larger than that of silica sands. It was proven that the yield stress of the crushable soil was lower than that of the silica sand. The yield stress was shown to be related at <i>d</i><sub>50</sub> single particle crushing strength. It was further shown that the curvature of a compression curve was dependent on the variance of single particle crushing strength.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 701, 343-355, 2002-03-21

    Japan Society of Civil Engineers

References:  30

Cited by:  11

Codes

  • NII Article ID (NAID)
    10008001892
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02897806
  • NDL Article ID
    6100891
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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