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Cement and Concrete Research (2012) in press
Time-dependent behaviour of hardened cement paste under isotropic loading
Vu Manh-Huyen 1, Jean Sulem 1, Siavash Ghabezloo ( ) 1, Laudet Jean-Benoît 2, Garnier André 2, Sylvine Guédon 3
(2012)

The experimental results of isotropic compression tests performed at 20°C and 90°C on a class G hardened cement paste hydrated at 90°C (Ghabezloo et al., 2008, Cem. Conc. Res. 38, 1424-1437) have been revisited considering time-dependent response. Within the frame of a viscoplastic model, the non-linear responses of the volumetric strains as observed in drained and undrained tests and of the pore pressure in undrained tests are analysed. The calibration of model parameters based on experimental data allows to study the effect of the test temperature on the viscous response of hardened cement paste showing that the creep is more pronounced for a higher test temperature. The effect of the hydration temperature on the time dependent behaviour is also studied by evaluating the model parameters for a cement paste hydrated at 60°C. The time-dependent deformations are more pronounced for hydration at a higher temperature.
1 :  Laboratoire Navier
Ecole des Ponts ParisTech – CNRS : UMR8205 – IFSTTAR
2 :  TOTAL-Scientific and Technical Center Jean Féger (CSTJF)
Total
3 :  Département Géotechnique, Eau et Risques (IFSTTAR/GER)
IFSTTAR – PRES Université Nantes Angers Le Mans [UNAM]
CERMES
Géotechnique
Physique/Mécanique/Mécanique des matériaux

Sciences de l'ingénieur/Mécanique/Mécanique des matériaux
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