Thermal-mechanical behavior of compacted GMZ Bentonite - École des Ponts ParisTech Access content directly
Journal Articles Soils and Foundations Year : 2011

Thermal-mechanical behavior of compacted GMZ Bentonite

Yu-Jun Cui
Connectez-vous pour contacter l'auteur
Anh Minh A.M. Tang
Li-Xin Qian
  • Function : Author
  • PersonId : 863452
Wei-Min Ye
  • Function : Author
  • PersonId : 863451
Bao Chen
  • Function : Author
  • PersonId : 863453

Abstract

The THM behavior of compacted GMZ bentonite has been investigated using a suction-temperature controlled isotropic cell. The results obtained were compared with the existing results on other reference bentonites (MX80, FEBEX, FoCa, and Kunigel-V1). It has been observed that the coefficient of thermal expansion of the compacted GMZ bentonite is 2 x 10-4°C-1, similar to the values of compacted MX80 and FEBEX bentonites. The heating tests of the GMZ bentonite also show that the suction is an important parameter that governs the thermal volumetric behavior of unsaturated soils. Unlike temperature, suction has a significant effect on the compressibility parameters. Examination of the mineralogy of various bentonites showed that a good correlation can be generally established between the montmorillonite content and the cations exchange capacity (CEC) or the specific surface area (S). Nevertheless, both the basic geotechnical properties and the swelling potential seem to depend not only on the montmorillonite content but also on other factors such as the nature of base exchangeable cations. The quartz content of the GMZ bentonite is relatively high (11.7%). This could explain its relatively large values of thermal conductivity.

Domains

Materials
Fichier principal
Vignette du fichier
Cui_et_al-SandF2011-HAL.pdf (292.19 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-00655766 , version 1 (02-01-2012)

Identifiers

  • HAL Id : hal-00655766 , version 1

Cite

Yu-Jun Cui, Anh Minh A.M. Tang, Li-Xin Qian, Wei-Min Ye, Bao Chen. Thermal-mechanical behavior of compacted GMZ Bentonite. Soils and Foundations, 2011, 51 (6), pp.1065-1074. ⟨hal-00655766⟩
4674 View
1117 Download

Share

Gmail Facebook X LinkedIn More