Estimation of soil-water characteristics using liquid limit state

S. G. Sung, In Mo Lee, G. C. Cho, L. N. Reddi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In order to suggest a procedure for estimating the generalised soil-water characteristic curves of natural soils, modified pressure cell extractor tests were carried out on soil specimens at various void ratios, which were compressed from liquid limit state. The main conclusions from this study are summarised below: (a) The modified pres sure cell extractor allows determination of the soil-water characteristic curves of deformable soils. The compression and unsaturation processes can be performed in succession using the same cell, so specimen disturbance can be avoided. The volume change of deformable soils can be measured directly. (b) The residual soils used in this study showed significant volume change due to matric suction. The soil-water characteristic curves corrected for volume change have higher air-entry values, flatter slopes, better correlation, and a narrower gap among themselves, compared with the uncorrected curves. These results highlight the importance of volume change correction when soil-water characteristic curves are obtained in deformable soils. (c) For the residual soils used in this study, the normalised constituent parameters of soil-water characteristic curves have a linear relationship with the normalised void ratio, showing the validity of the reference state approach in estimating soil-water characteristic curves for natural soils. Finally, an empirical procedure was provided for the estimation of generalised soil-water characteristic curves using liquid limit state as a reference state.

Original languageEnglish
Pages (from-to)569-573
Number of pages5
JournalGeotechnique
Volume55
Issue number7
DOIs
Publication statusPublished - 2005 Sep 1

Fingerprint

liquid limit
soil water
Soils
volume change
Liquids
Water
residual soil
soil
void ratio
suction
compression
disturbance
air

Keywords

  • Soil/structure interactions
  • Suction

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Geotechnical Engineering and Engineering Geology

Cite this

Estimation of soil-water characteristics using liquid limit state. / Sung, S. G.; Lee, In Mo; Cho, G. C.; Reddi, L. N.

In: Geotechnique, Vol. 55, No. 7, 01.09.2005, p. 569-573.

Research output: Contribution to journalArticle

Sung, S. G. ; Lee, In Mo ; Cho, G. C. ; Reddi, L. N. / Estimation of soil-water characteristics using liquid limit state. In: Geotechnique. 2005 ; Vol. 55, No. 7. pp. 569-573.
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