Characterization of two natural zeolites for geotechnical and geoenvironmental applications

Yukselen-Aksoy Y.

APPLIED CLAY SCIENCE, cilt.50, sa.1, ss.130-136, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.clay.2010.07.015
  • Dergi Adı: APPLIED CLAY SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.130-136
  • Anahtar Kelimeler: Consistency limits, Compressibility, Hydraulic conductivity, Shear strength, Swelling potential, Zeolite, PERMEABLE REACTIVE BARRIER, LANDFILL LINER, EXCHANGE, SURFACE, SOILS
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

This paper reports the findings of experimental studies on two natural zeolitic soils. Engineering properties (e.g., grain size, specific gravity, compressibility, hydraulic conductivity, swelling behavior and shear strength) were determined in order to assess their suitability for geotechnical and geoenvironmental applications. The two zeolite-rich tuff samples investigated were mainly composed of clinoptilolite. The results show that the cation exchange capacities are 60.5 and 57.2 mEq/100 g, which are below the theoretical reported values. Compression index values obtained reveal that the zeolitic soils are not highly compressible. The modified free swell indexes of the zeolitic samples are around 2.0, suggesting that they have low swelling potential. The drained residual friction angles indicate that the zeolitic soils have relatively high internal friction angles (34 degrees and 36.5 degrees for Z-1 and Z-2, respectively). Based on the results obtained, it was concluded that zeolites are mechanically stable materials that are suitable for embankment materials and landfill liner applications. (C) 2010 Elsevier B.V. All rights reserved.