Micromechanical Modeling of the Elastic Modulus of the ITZ of Concrete

Title: Micromechanical Modeling of the Elastic Modulus of the ITZ of Concrete
Author(s): A.H. Barbosa, A.M.P. Carneiro
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-108-7
e-ISBN: 978-2-35158-109-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 101 - 111
Total Pages: 11
Nb references: 19
Language: English

Abstract: The knowledge of the elastic modulus of concrete is important when it is applied as a structural material. The concrete has been assumed as a composite material of three phases, when the interfacial transition zone is considered as a phase of concrete. Concrete can be modeled and its elastic modulus is determined from the elastic properties of the components, as well as their respective volume fractions. The study was developed by analyzing the evolution of the elastic modulus of the ITZ over time, and these curves were obtained from experimental data. For modeling, we used the three phase sphere model [Chr79]. The properties of the interfacial transition zone are determined by inverse analysis. The presented results of the analysis with consideration of the time variation of elastic modulus of ITZ are shown to be agreement with the experimental data, wheras the analysis based on a two phase model, ignoring the ITZ, disagreed.

Online publication: 2010-12-02
Publication type : full_text
Public price (Euros): 0.00