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Monitoring the impact of sulfate attack on a cement-clay mix

Gemmina Di Emidio UGent and Ramiro Verastegui Flores UGent (2012) Geotechnical Special Publication. p.910-919
abstract
Cement-clay mixtures are regularly employed as cut-off walls to isolate polluted soils or in ground improvement technologies. In this research, an alternative method to monitor the mechanical and hydraulic behavior of cement-clay mixtures is proposed. Bender elements were installed in a hydraulic conductivity cell, to monitor simultaneously the small-strain shear modulus (G0) and the hydraulic conductivity of a cement-treated kaolin clay mixed with blast furnace slag cement. During permeation with deionized water, an increase of G0 with time was observed, due to cement hydration (hardening). Conversely, after permeation with a sulfate solution, a sudden decrease of G0 and a gradual increase of the hydraulic conductivity were noticed. The interparticle cementation of the mixture was probably affected by contact with sulfates, which are particularly aggressive to cement. Monitoring of G0 was shown to provide valuable additional information to study the impact of sulfate attack on the mechanical and hydraulic behavior of cement-clay mixtures.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Geotechnical Special Publication
editor
Kyle Ph D Rollins and Dimitrios, PhD, PE Zekkos
issue title
Geotechnical Engineering State of the Art and Practice: Keynote Lectures from GeoCongress 2012
pages
910 - 919
publisher
ASCE
place of publication
Virginia, USA
conference name
State of the Art and Practice in Geotechnical Engineering (GeoCongress - 2012)
conference location
Oakland, CA, USA
conference start
2012-03-25
conference end
2012-03-29
ISBN
9780784412138
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2081499
handle
http://hdl.handle.net/1854/LU-2081499
date created
2012-04-05 14:09:25
date last changed
2012-04-06 09:26:02
@inproceedings{2081499,
  abstract     = {Cement-clay mixtures are regularly employed as cut-off walls to isolate polluted soils or in ground improvement technologies. In this research, an alternative method to monitor the mechanical and hydraulic  behavior of cement-clay mixtures is proposed. Bender elements were installed in a hydraulic conductivity cell, to monitor simultaneously the small-strain shear modulus (G0) and the hydraulic conductivity of a cement-treated kaolin clay mixed with blast furnace slag cement. During permeation with deionized water, an increase of G0 with time was observed, due to cement hydration (hardening). Conversely, after permeation with a sulfate solution, a sudden decrease of G0 and a gradual increase of the hydraulic conductivity were noticed. The interparticle cementation of the mixture was probably affected by contact with sulfates, which are particularly aggressive to cement. Monitoring of G0 was shown to provide valuable additional information to study the impact of sulfate attack on the  mechanical and hydraulic behavior of cement-clay mixtures.},
  author       = {Di Emidio, Gemmina and Verastegui Flores, Ramiro},
  booktitle    = {Geotechnical Special Publication},
  editor       = {Rollins, Kyle Ph D and Zekkos,  Dimitrios, PhD, PE},
  isbn         = {9780784412138},
  language     = {eng},
  location     = {Oakland, CA, USA},
  pages        = {910--919},
  publisher    = {ASCE},
  title        = {Monitoring the impact of sulfate attack on a cement-clay mix},
  year         = {2012},
}

Chicago
Di Emidio, Gemmina, and Ramiro Verastegui Flores. 2012. “Monitoring the Impact of Sulfate Attack on a Cement-clay Mix.” In Geotechnical Special Publication, ed. Kyle Ph D Rollins and Dimitrios, PhD, PE Zekkos, 910–919. Virginia, USA: ASCE.
APA
Di Emidio, G., & Verastegui Flores, R. (2012). Monitoring the impact of sulfate attack on a cement-clay mix. In K. P. D. Rollins & D., PhD, PE Zekkos (Eds.), Geotechnical Special Publication (pp. 910–919). Presented at the State of the Art and Practice in Geotechnical Engineering (GeoCongress - 2012), Virginia, USA: ASCE.
Vancouver
1.
Di Emidio G, Verastegui Flores R. Monitoring the impact of sulfate attack on a cement-clay mix. In: Rollins KPD, Zekkos D, PhD, PE, editors. Geotechnical Special Publication. Virginia, USA: ASCE; 2012. p. 910–9.
MLA
Di Emidio, Gemmina, and Ramiro Verastegui Flores. “Monitoring the Impact of Sulfate Attack on a Cement-clay Mix.” Geotechnical Special Publication. Ed. Kyle Ph D Rollins & Dimitrios, PhD, PE Zekkos. Virginia, USA: ASCE, 2012. 910–919. Print.