Accelerated curing and strength of soil−cement mixtures

• Komiya Kazuhito

  Chiba Institute of Technology

• Yamanobe Junichi

  Chemical Grouting Co., Ltd.

• Endo Munehito

  Chiba Institute of Technology

• Shiozawa Takuya

  Chiba Institute of Technology

抄録

In situ soil-cement mixing is frequently used to minimize soil liquefaction, enhance soil strength and reduce soil permeability. For quality assurance purposes, drill core samples are taken from the soil-cement mixtures and unconfined compressive strength tests are carried out 28 days after mixing and placement, which may delay construction works. Clearly, there is a need to accurately predict the strength of soil-cement mixtures early. In this study, we prepared soil-cement mixtures with different proportions of clay, silt, sand, cement and water. The as-prepared specimens were subsequently cured at standard and various temperature, pressure and time conditions. We then compared the strength characteristics of the as-prepared soil-cement specimens. Unconfined compressive strength increases between 24 h and 48 h of accelerated curing; however, increasing the curing temperature does not lead to increases in strength. Compressive strength slightly increases with the curing pressure. Finally, the compressive strength depends on the cement and fines content and W_Total/C of the soil-cement mixtures.

収録刊行物

• Japanese Geotechnical Society Special Publication

  Japanese Geotechnical Society Special Publication 1 (5), 12-16, 2015

  公益社団法人 地盤工学会

キーワード

• soil−cement
• unconfined compressive strength
• accelerated curing

詳細情報

• CRID: 1390282680741533440
• NII論文ID: 130005095785
• DOI: 10.3208/jgssp.jpn-18
• ISSN: 21888027
• Web Site: https://www.jstage.jst.go.jp/article/jgssp/1/5/1_JPN-18/_pdf
• 本文言語コード: en
• データソース種別:
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