Study of the Gap Parameters of Cement Mortar Specimens Based on X-ray Tomography

Authors

  • András Kovács
    Affiliation
    Institute of Materials Engineering, Faculty of Engineering, University of Pannonia, Egyetem Street 10., H-8200 Veszprém, Hungary
https://doi.org/10.3311/PPch.38379

Abstract

Concrete is one of the most widely used structural materials next to steel. This justifies a detailed study of the material structure to understand the influence of the production parameters on the properties of the concrete. The pore structure of concretes has a major influence on their practical use, as it impacts their resistance to environmental degradation (e.g., frost resistance). In the present study, I have investigated concrete and cement mortar specimens with different water-cement ratios using micro-CT (or micro X-ray tomography) to determine the pore structure and the pore gap parameters of the specimens. It can be concluded that with an increasing water-cement ratio the overall porosity of the samples and the number of large pores (1 mm3) show a decreasing trend, in contrast, the gap parameter shows an enhancing trend. It can also be concluded that any pore-forming additives cause significant changes in the structure.

Keywords:

concrete, w/c ratio, gap parameter, X-ray tomography, micro-CT

Citation data from Crossref and Scopus

Published Online

2024-11-21

How to Cite

Kovács, A. “Study of the Gap Parameters of Cement Mortar Specimens Based on X-ray Tomography”, Periodica Polytechnica Chemical Engineering, 68(4), pp. 523–530, 2024. https://doi.org/10.3311/PPch.38379

Issue

Section

Articles