Journal
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
Volume 133, Issue -, Pages 210-218Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijengsci.2018.09.009
Keywords
Reinforced concrete; Computer tomography; Finite element method; Micromechanics; Homogenization
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Funding
- Russian RFBR [18-33-00688]
- German DFG [BR 5199/3-1]
- Italian INdAM-GNFM
- Russian Department of Education and Science of the Russian Federation [14.Z50.31.0036]
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The paper focuses on the development of a methodology for quantitative characterization of a concrete containing polymer fibers and pores. Computed tomography (CT) characterization technique is used to provide input data for Finite Element Method (FEM) simulations and analytical modeling based on micromechanical homogenization via the compliance contribution tensor formalism. Effective elastic properties of reinforced concrete are obtained experimentally using compression testing, analytically in the framework of Non Interaction approximation and numerically performing direct FEM simulations on specimen with reconstructed microstructure. It is shown that CT produces results suitable for implementation in numerical and analytical models. The results of analytical and numerical modeling are in a good agreement with experimental measurements providing maximum discrepancy of similar to 2.5%. (C) 2018 Elsevier Ltd. All rights reserved.
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