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Recent advances in modeling DEF effects



Author(s): J.-F. Seignol, O. Omikrine-Metalssi and F. Toutlemonde
Paper category: conference
Book title: Crack Control of Mass Concrete and Related Issues concerning Early-Age of Concrete Structures
Editor(s): F. Toutlemonde and J.-M. Torrenti
Print ISBN: 978-2-35158-125-4
e-ISBN: 978-2-35158-126-1
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 55 - 68
Total Pages: 14
Language: English


Abstract: This paper describes the last advances in a computational modelling of the mechanical effects of delayed ettringite formation (DEF) in concrete structures. DEF is a pathology which may occur in concretes submitted to high temperature at early age. It is responsible for strains, cracking and material mechanical properties degradation. First, chemo-mechanical model developed for the simulation of expansive internal reaction consequences in concrete structures is presented. The second section focuses on the coupling between early-age thermal history and DEF intensity. Finally the model is applied to the re-assessment of a real bridge structure.


Online publication: 2012-07-20
Publication Type: full_text
Public price (Euros): 0.00