The factors controlling the expansive nature of the soils and rocks of Northern Oman

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

The factors controlling the expansive nature of the soils and rocks in Northern Oman were studied. Basic geotechnical data from over 40 sites were collected and using empirical relationships, swelling potentials were identified. A laboratory testing program was carried out using undisturbed samples from these swell pressures up to 3.5 MPa, and swell percent values up to 30 were measured. The clay minerals and cations of these samples were determined and Na-smectite was identified as being the main clay-mineral present. Microfabric studies showed generally dense clay matrices. However, these swelling materials exist as impersistent bands with non-swelling soils and rocks which makes prediction of the ground heave problematic.

Original languageEnglish
Pages (from-to)327-350
Number of pages24
JournalEngineering Geology
Volume53
Issue number3-4
DOIs
Publication statusPublished - Jul 1999

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swell
Clay minerals
swelling
Swelling
clay mineral
Rocks
Soils
heave
rock
smectite
Clay
soil
cation
Positive ions
clay
matrix
Testing
prediction
programme
material

Keywords

  • Cations
  • Expansive soils and rocks
  • Microfabric
  • Mineralogy
  • Oman
  • Swell percent
  • Swell pressure
  • Swelling potential

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

The factors controlling the expansive nature of the soils and rocks of Northern Oman. / Al-Rawas, Amer A.

In: Engineering Geology, Vol. 53, No. 3-4, 07.1999, p. 327-350.

Research output: Contribution to journalArticle

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