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Studia Geotechnica et Mechanica

The Journal of Wroclaw University of Technology

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2083-831X
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Microstructure Characterization by Means of X-ray Micro-CT and Nanoindentation Measurements

Magdalena Rajczakowska
  • Wrocław University of Technology, Faculty of Civil Engineering, Institute of Geotechnics and Hydrotechnics, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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/ Damian Stefaniuk
  • Wrocław University of Technology, Faculty of Civil Engineering, Institute of Geotechnics and Hydrotechnics, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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/ Dariusz Łydżba
  • Wrocław University of Technology, Faculty of Civil Engineering, Institute of Geotechnics and Hydrotechnics, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Published Online: 2015-03-27 | DOI: https://doi.org/10.1515/sgem-2015-0009

Abstract

The aim of this paper is to present an example of the material microstructure characterization with the use of X-ray micro-CT and nanoindentation measurements. Firstly, the current scope of application of the aforementioned techniques is provided within different fields of science. Then, background of each of the methods is presented. The methodology of X-ray micro-CT is described with the emphasis on the Beer’s law formulation. In addition, the basics of the nanoindentation technique are outlined and major formulas for the hardness and Young’s modulus calculation are given. Finally, example results for a concrete sample are presented. The microstructure of the selected material is firstly characterized in terms of geometry using the results from the microtomograhy measurements, e.g., porosity and attenuation profiles, pore and aggregate size distribution, shape factor of pores, etc. Next, the results of the nanoindentation tests are provided, namely the hardness and Young’s modulus versus the height of the sample. The influence of the number of tests and statistical analysis on the final results is underlined.

Keywords: micro-CT; nanoindentation; microstructure; composite

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About the article

Published Online: 2015-03-27

Published in Print: 2015-03-01


Citation Information: Studia Geotechnica et Mechanica, ISSN (Online) 2083-831X, ISSN (Print) 0137-6365, DOI: https://doi.org/10.1515/sgem-2015-0009.

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© by Magdalena Rajczakowska. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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