Modelling the coupling between creep and internal swelling reactions in concrete structures

Author(s): O. Omikrine-Metalssi, J.-F. Seignol, S. Rigobert, F. Toutlemonde
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 717-725
Total Pages: 8
Language: English

A significant number of existing concrete dams are at present deteriorated by chemomechanical processes known as internal swelling reactions (ISR). These pathologies are responsible for cracking and expansion of the material which lead to degradation of the structures behaviour. Moreover, creep significantly affects concrete dams inducing increasing structural deformation over time. Modelling combined creep and ISR requires the determination of accessible parameters given by laboratory experiments and/or available in the literature or in the design codes. The elaborated model, presented in this paper, aims to integrate basic creep and ISR in concrete structures computation. Validation was first carried out by some 2D and 3D tests on simple cases for demonstrating the capacity of the developed model. Then, calculations of some types of structures subject to significant long term loads, such as dams, were carried out, and validation was performed by comparing the analytical results and the model calculations. In this paper, application of the model to the 3D simulation of ISR in a simple gravity dam is detailed.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00

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