The influence of environmental pollution on cyclic swell and shrink behavior of Na-bentonite clay

Tuncan A., Tuncan M., Yalcin M.

EURO CERAMICS VIII, PTS 1-3, vol.264-268, pp.2461-2464, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 264-268
  • Publication Date: 2004
  • Doi Number: 10.4028/www.scientific.net/kem.264-268.2461
  • Journal Name: EURO CERAMICS VIII, PTS 1-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2461-2464
  • Keywords: Na-bentonite clay, swelling potential, swelling pressure, cyclic swelling and shrinking, cyclic wetting and drying, sanitary leachate, kerosene, saline water, clay microstructure
  • Anadolu University Affiliated: No

Abstract

This paper investigates the environmental pollution effects such as saline water, kerosene and sanitary leachate of cyclic wetting and drying on swell and shrink behaviour of compacted Na-bentonite clay. While the distilled water added Na-bentonite had the highest free swelling, saline water added Na-bentonite had the lowest free swelling among them. The experimental results showed that after each cycle, swelling and shrinking behaviour of compacted Na-bentonite clay were decreased. Honeycombe structure and random and more open flocculated structure dominated by large interdomain macrovoids and cavities were evident from salt water added Na-bentonite. Some domains and orientations were observed from distilled water added Na-bentonite micrographs. Aggregated and agglomerated structure were evident from kerosene added Na-bentonite micrographs.