Dehydration and strength properties of cement-mixed soils with a mechanical dehydration

Masaki Sano, Kouki Zen, Guangqi Chen, Kiyonobu Kasama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Authors have developed a technique called the cement-mixing and mechanical dehydration method (CMD) as one of recycling techniques for soft clay slurry. In the CMD procedure, soft clay mixed with cement is dehydrated with a high dehydration pressure for the purpose of increasing the strength. In order to develop the effective procedure of the CMD for achieving a high strength with a low dehydration pressure, the effect of controlling soil grains on the strength of clay produced by the CMD was investigated in this paper. The following conclusions are obtained: (1) The dehydration time required completing consolidation process decreases with increasing sand content. Therefore, mixing sand content into the cement-mixed and dehydrated specimen is effective for shortening dehydration time and increasing specimen dimension in the future development for the CMD. (2) The unconfined compressive strength of clay produced by the CMD is a unique function of the water-cement ratio and therefore it is possible to obtain a high strength specimen by decreasing water-cement ratio. (3)Based on the principal component analysis and the multiple linear regression analysis, a formula to estimate the unconfined compressive strength of clay produced by the CMD is proposed using the clay content, dry density and water-cement ratio.

Original languageEnglish
Title of host publicationGeotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09
Pages483-490
Number of pages8
DOIs
Publication statusPublished - Nov 16 2010
EventInternational Symposium on Ground Improvement Technologies and Case Histories, ISGI'09 - Singapore, Singapore
Duration: Dec 9 2009Dec 12 2009

Publication series

NameGeotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09

Other

OtherInternational Symposium on Ground Improvement Technologies and Case Histories, ISGI'09
CountrySingapore
CitySingapore
Period12/9/0912/12/09

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Cite this

Sano, M., Zen, K., Chen, G., & Kasama, K. (2010). Dehydration and strength properties of cement-mixed soils with a mechanical dehydration. In Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09 (pp. 483-490). (Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09). https://doi.org/10.3850/GI089