Advanced search
1 file | 127.86 KB

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

Author
Organization
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.

Downloads

    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 127.86 KB

Citation

Please use this url to cite or link to this publication:

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.
@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},
}

Altmetric
View in Altmetric