Creep of a C-S-H gel: a micromechanical approach.
An Acad Bras Cienc
; 82(1): 25-41, 2010 Mar.
Article
em En
| MEDLINE
| ID: mdl-20209241
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 relative sliding of the sheets. This paper proposes a micromechanical approach to estimate the macroscopic creep behavior rising from this microscopic mechanism. The asymptotic evolution of creep at both short- and long-term is especially investigated. More precisely, a non-vanishing initial elastic strain is retrieved. At long-term, a threshold on porosity appears. At lower porosities, the creep evolution admits an asymptotic strain. At higher porosities, it admits an asymptotic strain rate.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
An Acad Bras Cienc
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
França
País de publicação:
Brasil