The relationship between geotechnical index properties and the pore-size distribution of compacted clayey silts

URAL N.

Science and Engineering of Composite Materials, vol.22, no.6, pp.623-632, 2015 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 6
  • Publication Date: 2015
  • Doi Number: 10.1515/secm-2013-0302
  • Journal Name: Science and Engineering of Composite Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.623-632
  • Keywords: clay, mineralogy, pore-size distribution, scanning electron microscope, silt
  • Bilecik Şeyh Edebali University Affiliated: Yes

Abstract

© 2015 by De Gruyter.In this study, the relationships between geotechnical index properties and the pore-size distribution of compacted natural silt and artificial soil mixtures, namely, silt with two different clays and three different clay percentages (10%, 20%, and 40%), were examined and compared. Atterberg's limit tests, standard compaction tests, mercury intrusion porosimetry, X-ray diffraction, scanning electron microscopy (SEM) analysis, and Brunauer-Emmett-Teller specific surface analysis were conducted. The results show that the liquid limit, the cumulative pore volume, and specific surface area of artificially mixed soils increase with an increase in the percentage of clay. The cumulative pore volume and specific surface area with geotechnical index properties were compared. High correlation coefficients were observed between the specific areas and both the liquid limit and the plasticity index, as well as between the cumulative pore volume and both the clay percentage and the S coefficient. In addition, qualitative SEM analyses were conducted.