High-strengthening of cement-treated clay by mechanical dehydration

Kiyonobu Kasama, Kouki Zen, Kiyoharu Iwataki

研究成果: ジャーナルへの寄稿学術誌査読

25 被引用数 (Scopus)

抄録

A technique called the cement-mixing and mechanical dehydration method (CMD) as one of recycling techniques for soft clay slurry is developed. In order to evaluate the effectiveness of the CMD for increasing the strength of soft clay, a series of unconfined compression tests and several durability tests were performed together with the literature review of unconfined compressive strength in cement-treated soils. Moreover, a series of constant strain rate consolidation tests were also performed to evaluate the effects of cement content and dehydration speed on the permeability of cement-treated clay. The following conclusions are obtained: 1) Literature review and theoretical considerations on the shear strength of cement-treated soils show that an additional treatment for the purpose of increasing the density of cement-treated specimen is effective for increasing the shear strength of cement-treated soil. 2) The mechanical dehydration of soft clay with high pressure is accelerated by cement mixing, where the coefficient of consolidation of cement-treated clay increases as the cement content increases. 3) The high-strength specimen having the unconfined compressive strength of more than 20 MPa can be created from soft clay treated by the CMD with the cement content of over 20% and the dehydration pressure of 20 MPa.

本文言語英語
ページ(範囲)171-184
ページ数14
ジャーナルSoils and Foundations
47
2
DOI
出版ステータス出版済み - 2007

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 地盤工学および土木地質学

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