Environmental geological and geotechnical investigations related to the potential use of Ankara clay as a compacted landfill liner material, Turkey


Met İ., Akgun H., Türkmenoğlu A. G.

ENVIRONMENTAL GEOLOGY, vol.47, pp.225-236, 2005 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47
  • Publication Date: 2005
  • Doi Number: 10.1007/s00254-004-1147-4
  • Journal Name: ENVIRONMENTAL GEOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.225-236
  • Keywords: Ankara clay, compacted clay liner, hydraulic conductivity, clay mineralogy, clay geotechnical index properties, Turkey, HYDRAULIC CONDUCTIVITY, PERMEABILITY

Abstract

Clay-bearing Upper Pliocene red clastics and Quaternary alluvial deposits occupy the Ankara basin. The clayey levels of the Upper Pliocene deposits, referred to as Ankara clay, is considered as a source for compacted clay liners due to their low coefficients of permeability and widespread distributions throughout Ankara. This study investigates the geological, geotechnical and mineralogical properties of the founding clayey soils at two sites of the Ankara region. The geotechnical index properties along with the hydraulic conductivities of the clayey soil samples collected from these sites were determined. A mathematical relation between the clay mineralogical content and hydraulic conductivity was established. The results of this investigation show that, from a geotechnical point of view, Ankara clay may be regarded as a highly suitable material for a compacted clay landfill liner given that its mineralogical compatibility with leachate is confirmed.