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

Amer A. Al-Rawas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 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

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

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