少量のセメントを添加し再圧密した再構成海成粘土のせん断特性  [in Japanese] Undrained shear characteristics of reconstituted and reconsolidated marine clays with addition of a small amount of cement  [in Japanese]

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Abstract

海成粘土スラリーに少量のポルトランドセメントを添加し再圧密することによって,堆積過程のセメンテーションによる構造を有する自然粘土の非排水せん断特性を実験室で再現することを試みた。一軸圧縮強度の発現に必要な量よりも1~3%少ない添加率でセメントを粘土スラリーに添加し,再圧密後に3日から12日間養生した粘土試料の三軸CIU試験,<i>K</i><sub>0</sub>圧密圧縮伸張試験を行った結果,求められた非排水せん断特性はセメンテーションによる構造を有する不撹乱海成粘土の特性と類似していることがわかった。

The purpose of this study is to duplicate the undrained shear characteristics of natural aged clays, which have structures formed by cementation in the sedimentation process. The reconstituted marine clay slurries being added a small amount of the portland cement were reconsolidated and cured. The cement contents of clays were smaller than that is necessary for mobilizing the unconfined compression strength by 1-3%. According to the series of triaxial CIU tests and<i>K</i><sub>0</sub>-consolidated compression and extension tests, the reconsolidated and cured clay samples show the strength and deformation characteristics similar to undisturbed clay samples having structures formed by the cementation.

Journal

  • Japanese Geotechnical Journal

    Japanese Geotechnical Journal 9(1), 71-84, 2014

    The Japanese Geotechnical Society

Codes

  • NII Article ID (NAID)
    130004482954
  • Text Lang
    JPN
  • Data Source
    J-STAGE 
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