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A FEM Multiscale Homogenization Procedure using Nanoindentation for High Performance Concrete

نویسندگان

  • Aïssa Asroun LGC, Department of Civil Engineering, Djillali Liabès University, Rue Kadi Benkadi, Sidi-Bel-Abbès, 22000, Algeria
  • Boussad Abbès GRESPI, University of Reims Champagne-Ardenne, UFR SEN, Campus Moulin de la Housse, Reims, 51687, France
  • Fazilay Abbès GRESPI, University of Reims Champagne-Ardenne, UFR SEN, Campus Moulin de la Housse, Reims, 51687, France
  • Rim Benkabou LGC, Department of Civil Engineering, Djillali Liabès University, Rue Kadi Benkadi, Sidi-Bel-Abbès, 22000, Algeria

چکیده

This paper aims to develop a numerical multiscale homogenization method for prediction of elasto-viscoplastic properties of a high performance concrete (HPC). The homogenization procedure is separated into two-levels according to the microstructure of the HPC: the mortar or matrix level and the concrete level. The elasto-viscoplastic behavior of individual microstructural phases of the matrix are identified from nanoindentation data using an inverse identification method. The micromechanical results are then used as input parameters for numerical elasto-viscoplastic homogenization at microscale. The mortar level is analyzed with numerical homogenization by using the finite element simulation to predict the overall elasto-viscoplastic properties of HPC. The results are compared with macroscopic experimental and analytical results from the literature showing a good agreement.

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