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Laboratory determination of coefficient of consolidation from pore water pressure measurement

Journal Article


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Abstract


  • ICE Publishing: all rights reserved. In the recent past, many studies have been carried out on the determination of coefficient of consolidation (cv) from the time (t)-deformation (d) data obtained from conventional consolidation tests. Several researchers have also proposed different curve fitting procedures for determining cv from the t-d data. It is anticipated that the cv values obtained from the t-d data may be influenced by initial and secondary compressions. Nevertheless, the pore water pressure data measured during the consolidation process will be independent of initial and secondary compressions. In this study, the conventional Asaoka (1978) method is extended to evaluate cv and end-of-primary (EOP) consolidation from the pore water pressure data measured from laboratory experiments. Laboratory experiments were carried out on the modified one-dimensional consolidation apparatus on different remoulded clay samples measuring pore water pressure during the consolidation process. The cv and EOP computed from the proposed approach have been compared with the results of the t-d data and found to be in good agreement.

UOW Authors


  •   Vinod, J S. (external author)
  •   Sridharan, A (external author)

Publication Date


  • 2015

Citation


  • Vinod, J. S. & Sridharan, A. (2015). Laboratory determination of coefficient of consolidation from pore water pressure measurement. Geotechnique Letters, 5 (4), 294-298.

Scopus Eid


  • 2-s2.0-84955585197

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6041&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5014

Number Of Pages


  • 4

Start Page


  • 294

End Page


  • 298

Volume


  • 5

Issue


  • 4

Abstract


  • ICE Publishing: all rights reserved. In the recent past, many studies have been carried out on the determination of coefficient of consolidation (cv) from the time (t)-deformation (d) data obtained from conventional consolidation tests. Several researchers have also proposed different curve fitting procedures for determining cv from the t-d data. It is anticipated that the cv values obtained from the t-d data may be influenced by initial and secondary compressions. Nevertheless, the pore water pressure data measured during the consolidation process will be independent of initial and secondary compressions. In this study, the conventional Asaoka (1978) method is extended to evaluate cv and end-of-primary (EOP) consolidation from the pore water pressure data measured from laboratory experiments. Laboratory experiments were carried out on the modified one-dimensional consolidation apparatus on different remoulded clay samples measuring pore water pressure during the consolidation process. The cv and EOP computed from the proposed approach have been compared with the results of the t-d data and found to be in good agreement.

UOW Authors


  •   Vinod, J S. (external author)
  •   Sridharan, A (external author)

Publication Date


  • 2015

Citation


  • Vinod, J. S. & Sridharan, A. (2015). Laboratory determination of coefficient of consolidation from pore water pressure measurement. Geotechnique Letters, 5 (4), 294-298.

Scopus Eid


  • 2-s2.0-84955585197

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=6041&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/5014

Number Of Pages


  • 4

Start Page


  • 294

End Page


  • 298

Volume


  • 5

Issue


  • 4