Performance assessment of a bentonite-sand mixture for nuclear waste isolation at the potential Akkuyu Nuclear Waste Disposal Site, southern Turkey


Akgun H. , Ada M., Kockar M. K.

ENVIRONMENTAL EARTH SCIENCES, cilt.73, ss.6101-6116, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 73
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s12665-014-3837-x
  • Dergi Adı: ENVIRONMENTAL EARTH SCIENCES
  • Sayfa Sayıları: ss.6101-6116

Özet

This study assesses the geotechnical performance of a compacted bentonite-sand mixture with a bentonite content ranging from 15 to 30 % by weight to be used as a material component in a waste sealing system. Geotechnical laboratory tests such as compaction, falling head permeability, swelling, unconfined compression and shear strength tests were conducted to select an optimum mixture which eventually led to a recommendation to select an optimum bentonite-sand mixture possessing a bentonite content of 30 % for the isolation of underground waste disposal facilities. Bentonite-sand seal design was performed for the optimum seal selected as a function of the axial stress applied to the seal and seal length-to-radius ratio.