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Impact of sulfates on the mechanical and hydraulic behavior of a cement-clay mix

Gemmina Di Emidio UGent and Ramiro Verastegui Flores UGent (2011) Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks. p.1753-1756
abstract
Self-hardening cement-clay materials are regularly employed as vertical containment barriers to isolate polluted soils or in ground improvement technologies. In this study, a nondestructive technique is proposed as an alternative method to monitor the hardening of cement-treated clay and its hydraulic conductivity at the same time. For this purpose, bender elements were installed in a flexible wall hydraulic conductivity cell. In that way, the shear wave velocity, the small-strain shear modulus (G0) as well as the hydraulic conductivity of the same sample could be monitored at various time intervals. G0 is strongly influenced by interparticle cementation, therefore, an increase in G0 with time can be expected under normal curing conditions. However, interparticle cementation could be severely affected by contact with sulfates which can be present in polluted solutions and are particularly aggressive to cement, with a consequent possible decrease of G0. This behavior was demonstrated out of experimental work carried out on cement-treated kaolin clay. Monitoring of G0 was shown to provide valuable additional information to study the impact of sulfate attack on the mechanical and hydraulic behavior of a cement-clay mixture.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks
editor
Andreas Anagnostopoulos, Michael Pachakis and Christos Tsatsanifos
pages
1753 - 1756
publisher
IOS Press
conference name
15th European Conference on Soil Mechanics and Geotechnical Engineering
conference location
Athens, Greece
conference start
2011-09-12
conference end
2011-09-15
ISBN
9781607508007
DOI
10.3233/978-1-60750-801-4-1753
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2081515
handle
http://hdl.handle.net/1854/LU-2081515
date created
2012-04-05 14:24:23
date last changed
2016-12-19 15:37:30
@inproceedings{2081515,
  abstract     = {Self-hardening cement-clay materials are regularly employed as vertical containment barriers to isolate polluted soils or in ground improvement technologies. In this study, a nondestructive technique is proposed as an alternative method to monitor the hardening of cement-treated clay and its hydraulic conductivity at the same time. For this purpose, bender elements were installed in a flexible wall hydraulic conductivity cell. In that way, the shear wave velocity, the small-strain shear modulus (G0) as well as the hydraulic conductivity of the same sample could be monitored at various time intervals. G0 is strongly influenced by interparticle cementation, therefore, an increase in G0 with time can be expected under normal curing conditions. However, interparticle cementation could be severely affected by contact with sulfates which can be present in polluted solutions and are particularly aggressive to cement, with a consequent possible decrease of G0. This behavior was demonstrated out of experimental work carried out on cement-treated kaolin clay. Monitoring of G0 was shown to provide valuable additional information to study the impact of sulfate attack on the mechanical and hydraulic behavior of a cement-clay mixture.},
  author       = {Di Emidio, Gemmina and Verastegui Flores, Ramiro},
  booktitle    = {Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks},
  editor       = {Anagnostopoulos, Andreas  and Pachakis, Michael  and Tsatsanifos, Christos },
  isbn         = {9781607508007},
  language     = {eng},
  location     = {Athens, Greece},
  pages        = {1753--1756},
  publisher    = {IOS Press},
  title        = {Impact of sulfates on the mechanical and hydraulic behavior of a cement-clay mix},
  url          = {http://dx.doi.org/10.3233/978-1-60750-801-4-1753},
  year         = {2011},
}

Chicago
Di Emidio, Gemmina, and Ramiro Verastegui Flores. 2011. “Impact of Sulfates on the Mechanical and Hydraulic Behavior of a Cement-clay Mix.” In Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks, ed. Andreas Anagnostopoulos, Michael Pachakis, and Christos Tsatsanifos, 1753–1756. IOS Press.
APA
Di Emidio, G., & Verastegui Flores, R. (2011). Impact of sulfates on the mechanical and hydraulic behavior of a cement-clay mix. In A. Anagnostopoulos, M. Pachakis, & C. Tsatsanifos (Eds.), Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks (pp. 1753–1756). Presented at the 15th European Conference on Soil Mechanics and Geotechnical Engineering, IOS Press.
Vancouver
1.
Di Emidio G, Verastegui Flores R. Impact of sulfates on the mechanical and hydraulic behavior of a cement-clay mix. In: Anagnostopoulos A, Pachakis M, Tsatsanifos C, editors. Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks. IOS Press; 2011. p. 1753–6.
MLA
Di Emidio, Gemmina, and Ramiro Verastegui Flores. “Impact of Sulfates on the Mechanical and Hydraulic Behavior of a Cement-clay Mix.” Proceedings of the 15th European Conference on Soil Mechanics and Geotechnical Engineering : Geotechnics of Hard Soils : Weak Rocks. Ed. Andreas Anagnostopoulos, Michael Pachakis, & Christos Tsatsanifos. IOS Press, 2011. 1753–1756. Print.