Compressibility of a "tunable" clay-polymer composite

Bijoy Halder, Matthew Bishop, Angelica M. Palomino, Jong Sub Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

"Tunable" clay-polymer composites are designed to be modifiable in-situ through controlled manipulation of interparticle/interlayer spacings via the surrounding fluid chemistry. This study explores the one-dimensional consolidation behavior of "tunable" clay-polymer composites in low and high ionic concentration solutions. Both low and high ionic concentrations were selected to promote polymer molecule expanded and coiled conformation, respectively. Oedometer tests were carried out on pre-consolidated specimens derived from slurries (both composite and pure clay). Also, bender elements were employed to measure shear wave velocities during consolidation. A comparison between the resulting compression curves and shear wave results indicate that as ionic concentration increases, the coefficient of consolidation, compression index, swell index, and shear wave velocity of the composite increase compared to pure clay. These results are consistent with coiled conformation of the responsive polymer.

Original languageEnglish
Title of host publicationGeotechnical Special Publication
EditorsThomas L. Brandon, Richard J. Valentine
PublisherAmerican Society of Civil Engineers (ASCE)
Pages423-433
Number of pages11
EditionGSP 276
ISBN (Electronic)9780784480434
DOIs
Publication statusPublished - 2017
EventGeotechnical Frontiers 2017 - Orlando, United States
Duration: 2017 Mar 122017 Mar 15

Publication series

NameGeotechnical Special Publication
NumberGSP 276
Volume0
ISSN (Print)0895-0563

Conference

ConferenceGeotechnical Frontiers 2017
Country/TerritoryUnited States
CityOrlando
Period17/3/1217/3/15

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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