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Benhur and Vi(CA)2T, two toolboxes to model concrete as an heterogeneous material combining analytical and numerical approaches



Title: Benhur and Vi(CA)2T, two toolboxes to model concrete as an heterogeneous material combining analytical and numerical approaches
Author(s): Y. Le Pape, C. Toulemonde, R. Masson, J. El Gharib
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 147 - 154
Total Pages: 8
Nb references: 14
Language: English


Abstract: It is recognized that modelling concrete as an heterogeneous material is an arduous task due to several factors: (i) the wide range of shapes and scales from the smallest particles within the cement paste to the largest aggregates; (ii) scale separation, that is a main theoretical basis of upscaling techniques, is hardly retrieved since the basic principle for concrete formulation is the continuity of the sieving curve in order to obtain the best compact medium, (iii) even at the microscopic level, the cement paste and the so-called interface transition zone (ITZ) properties are still not characterized, (iv) each concrete is a kind of a prototype. However, considerable progress was achieved in the field of testing and numerical computation that allows to challenge accurately multiscale modelling. For practical purpose, modelling concrete as a true heterogeneous material should lead to: (i) a better understanding of the material behaviour; (ii) derivation of macroscopic properties; (iii) the possibility to optimize numerically new formulations. In order to address these questions, EDF Research and Development Division has been developing two toolboxes: Vi(CA)2T (Virtual Cement and Concrete Ageing Analysis Toolboxes) and BENHUR (Numerical Homogenized Concrete). This paper presents the current level of their developments.


Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00