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Effect of the curing temperature on the creep of a hardened cement paste

Authors :: Jean-Benoît Laudet
Jean Sulem
Manh-Huyen Vu
Géotechnique (cermes)
Laboratoire Navier (navier umr 8205)
Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)
TOTAL Management Residual Gases Project
TOTAL FINA ELF
Source :: Cement and Concrete Research, Cement and Concrete Research, Elsevier, 2012, 42 (9), pp.1233-1241. ⟨10.1016/j.cemconres.2012.05.015⟩
Publication Year :: 2012
Publisher :: Elsevier BV, 2012.
Abstract: International audience; Uniaxial creep tests have been performed at ambient temperature on a saturated hardened class G cement paste hydrated at 60 degrees C and 90 degrees C. The results have shown that creep is enhanced at higher curing temperature. The visco-damage model of Challamel et al. (2005) has been extended and used to analyze the experimental results. The model parameters have been calibrated on the results of the creep tests performed at different stress levels for both curing temperatures. The model correctly reproduces the effect of the curing temperature on time dependent properties of the material. The enhanced creep at higher curing temperature is attributed to the development of more damage in cement paste and to significant weakening of the mechanical properties. (C) 2012 Elsevier Ltd. All rights reserved.