ベントナイト・ペーストの粘弾性

DOI Web Site

書誌事項

タイトル別名
  • Viscoelastic Properties of Bentonite Pastes
  • ベントナイト ペースト ノ ネンダンセイ

この論文をさがす

説明

Viscoelastic properties of several kinds of bentonite pastes were measured under constant shearing stresses by the use of a cone-and-plate type viscometer. It was found that the paste had two threshold values of shearing stress which were named“lower limit”and“upper limit, ” and that the viscoelastic behavior appeared markedly between these two limits. Below the lower limit of stress no deformation was observed. The bentonite in swelling liquids showed the viscoelastic behavior is different from that in non-swelling liquids. The upper limit was assumed to be a value above which local breakdown of the structure of paste occurs. This upper limit was compared with the critical value obtained from a uniaxial compression test and that from a direct shear test used in soil mechanics. The upper limit σ2* was found to be related to the shear fracture, and was experssed experimentally by the following equation:<br>σ2*=A·exp (k·c)<br>where c is the concentration of bentonite and A and k are constants. σ2* takes a higher value in swelling liquids than in non-swelling liquids.

収録刊行物

  • 材料試験

    材料試験 11 (104), 285-288, 1962

    公益社団法人 日本材料学会

詳細情報 詳細情報について

問題の指摘

ページトップへ