Assessment of crushed shales for use as compacted landfill liners

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The possibility of using crushed shales as landfill liners is investigated in this study. Two types of shales were studied by performing the following laboratory tests: hydraulic conductivity, compaction, swelling, consolidation, X-ray diffraction (XRD), scanning electron microscope (SEM) and chemical analysis. For both compacted shales, the hydraulic conductivity was in order of 10-7 cm/s or less which satisfies the specifications for landfill liners. The results of XRD and SEM support the low values of the hydraulic conductivity. Because of the dominant presence of low-activity kaolinite, there was no significant change in the hydraulic conductivity when the compacted shales are exposed to calcium chloride solution. The compressibility of the compacted clay was low and no serious post-construction settlement is expected. The shear strength of the compacted shales was within the usual expected range for earthen liners and, therefore, should pose no challenges with respect to shear strength. The crushed shales also satisfy the other criteria related to Atterberg limits and grain size.

Original languageEnglish
Pages (from-to)271-281
Number of pages11
JournalEngineering Geology
Volume80
Issue number3-4
DOIs
Publication statusPublished - Aug 30 2005

Fingerprint

landfill liner
Hydraulic conductivity
Land fill
hydraulic conductivity
Shear strength
shear strength
Electron microscopes
X-ray diffraction
Scanning
Atterberg limit
X ray diffraction
electron
Calcium chloride
Kaolinite
liner
compressibility
Compressibility
Consolidation
chemical analysis
swelling

Keywords

  • Compressibility
  • Hydraulic conductivity
  • Landfill liners
  • Oman
  • Shales
  • Shear strength

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Assessment of crushed shales for use as compacted landfill liners. / Mohamedzein, Yahia E A; Al-Rawas, Amer A.; Al-Aghbari, Mohammed Y.; Qatan, Ahmed; Al-Rawas, Abdul Hamid.

In: Engineering Geology, Vol. 80, No. 3-4, 30.08.2005, p. 271-281.

Research output: Contribution to journalArticle

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