COUPLINGS BETWEEN CREEP AND DAMAGE: ROLE OF THE FRACTURE CRITERION

Author(s):Cyrille Dunant, Adrien Hilaire
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-170-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages:362-371
Total Pages: 10
Language : English

Abstract: Couplings between creep and damage have to be considered to study the serviceability of
concrete structures. This problem is of fundamental importance for structures exposed to
relatively high loads over long time scales, e. g. ASR loads. Numerical simulations are
performed via the AMIE framework. An appropriate algorithm is proposed and implemented
to consider creep-damage couplings. Three-points bending tests on concrete notched beams
are modelled and analysed. This kind of structures exhibits a snap-back instability. It is
highlighted that the post-peak softening response is dependent on the fracture criterion and on
the rate of loading. An experimental campaign to distinguish between proposed criteria has
been launched: beams are tested under different loading rates.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00