TY  - JOUR
A1  - Nguyen-Tuan, Long
A1  - Lahmer, Tom
A1  - Datcheva, Maria
A1  - Stoimenova, Eugenia
A1  - Schanz, Tom
T1  - A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses
JF  - Computers and Geotechnics
N2  - A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2016
SP  - 23
EP  - 32
ER  - 
TY  - JOUR
A1  - Nguyen-Tuan, Long
A1  - Lahmer, Tom
A1  - Datcheva, Maria
A1  - Schanz, Tom
T1  - Global and local sensitivity analyses for coupled thermo‐hydro‐mechanical problems
JF  - International Journal for Numerical and Analytical Methods in Geomechanics
N2  - Global and local sensitivity analyses for coupled thermo‐hydro‐mechanical problems
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2016
ER  - 
TY  - JOUR
A1  - Knabe, Tina
A1  - Datcheva, Maria
A1  - Lahmer, Tom
A1  - Cotecchia, F.
A1  - Schanz, Tom
T1  - Identification of constitutive parameters of soil using an optimization strategy and statistical analysis
JF  - Computers and Geotechnics
N2  - Identification of constitutive parameters of soil using an optimization strategy and statistical analysis
KW  - Angewandte Mathematik
KW  - Stochastik
KW  - Strukturmechanik
Y1  - 2013
SP  - 143
EP  - 157
ER  - 
TY  - JOUR
A1  - Schanz, Tom
A1  - Tripathy, Snehasis
T1  - Swelling pressure of a divalent-rich bentonite: Diffuse double-layer theory revisited
JF  - Water Resources Research
N2  - Physicochemical forces are responsible for the swelling pressure development in saturated bentonites. In this paper, the swelling pressures of several compacted bentonite specimens for a range of dry density of 1.10–1.73 Mg/m3 were measured experimentally. The clay used was a divalent-rich Ca-Mg-bentonite with 12% exchangeable Na+ ions. The theoretical swelling pressure–dry density relationship for the bentonite was determined from the Gouy-Chapman diffuse double-layer theory. A comparison of experimental and theoretical results showed that the experimental swelling pressures are either smaller or greater than their theoretical counterparts within different dry density ranges. It is shown that for dry density of the clay less than about 1.55 Mg/m3, a possible dissociation of ions from the surface of the clay platelets contributed to the diffuse double-layer repulsion. At higher dry densities, the adsorptive forces due to surface and ion hydration dominated the swelling pressures of the clay. A comparison of the modified diffuse double-layer theory equations proposed in the literature to determine the swelling pressures of compacted bentonites and the experimental results for the clay in this study showed that the agreement between the calculated and experimental swelling pressure results is very good for dry densities less than 1.55 Mg/m3, whereas at higher dry densities the use of the equations was found to be limited.
KW  - Bentonit
KW  - Boden
KW  - Ton
KW  - Geochemical modeling; Soils; High-pressure behavior; bentonite; clays; expansive clays
Y1  - 2009
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170425-31592
ER  -