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国际多尺度计算工程期刊
影响因子: 1.016 5年影响因子: 1.194 SJR: 0.452 SNIP: 0.68 CiteScore™: 1.18

ISSN 打印: 1543-1649
ISSN 在线: 1940-4352

国际多尺度计算工程期刊

DOI: 10.1615/IntJMultCompEng.v8.i4.10
pages 357-368

Creep of a C-S-H Gel: Micromechanical Approach

Julien Sanahuja
Lafarge Centre de Recherche, 95 rue du Montmurier, BP 15, 38291 Saint-Quentin Fallavier cedex, France; Presently at EDF R&D, Departement MMC, Site des Renardieres, Avenue des Renardieres, E´cuelles, 77818 Moret sur Loing cedex, France
Luc Dormieux
LMSGC, Institut Navier, Ecole Nationale des Ponts et Chaussees

ABSTRACT

Both clays and calcium silicate hydrates (the main hydration products of Portland cements) exhibit a microstructure made up of lamellar particles. The microscopic mechanism responsible for the macroscopic creep of such materials is often described as the sliding of the sheets one onto the other. This paper proposes a micromechanical approach to estimate the macroscopic creep behavior rising from this microscopic mechanism. The asymptotic evolution of effective creep at both short and large times is especially investigated. The influence of the shape of the particles is also quantitatively discussed.

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