Advanced direct shear testing for collapsible soils with water content and matric suction measurement

D. Hormdee, H. Ochiai, N. Yasufuku

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


At natural, in-situ water content, collapsible soils have high strength and relatively high void-ratio with low compressibility. These soils could easily collapse when wet. If the differential deformations and slope stability effects have been neglected in the design and construction processes, they could cause damage to constructions. Therefore, the identification of collapsible soils with estimation of the collapse potential and shear strength become major components in appropriate engineering for these moisture-sensitive soil sites. To deal with shear strength of unsaturated soil or collapsible soil, the direct shear box apparatus for measuring in water content with matric suction must be modified. The electrical sensors for water content measurement are installed near the shear plane. Due to low friction material, Teflon sheets are then used as a spacer to control the water content of the specimen during testing.

Original languageEnglish
Pages (from-to)2281-2290
Number of pages10
JournalGeotechnical Special Publication
Issue number130-142
Publication statusPublished - Apr 26 2005
EventGeo-Frontiers 2005 - Austin, TX, United States
Duration: Jan 24 2005Jan 26 2005

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


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