SciELO journals
Browse
1/1
12 files

Characterization of test specimens produced in reduced size for X-ray microtomography (µ-CT) tests

dataset
posted on 2017-12-05, 09:53 authored by E. E. BERNARDES, A. G. DE MAGALHÃES, W. L. VASCONCELOS, E. V. M. CARRASCO, E. H. M. NUNES, L. B. DE LIMA

Abstract The need to use reduced sample sizes, in order to attain improved spatial resolution in (µ-CT) tests applied in Portland cement composites, makes researchers perform the fractionation of materials to obtain samples with dimensions compatible with the capacity of the scanning equipment, which might cause alterations in the microstructure under analysis. Therefore, a test specimen (TS) with dimensions compatible with the scanning capacity of a microtomography system that operates with an X-ray tube and voltage ranging from 20 to 100 kV was proposed. Axial compression strength tests were made and their total porosity was assessed by an apparent density and solid fraction density ratio, which were obtained by means of mercury and helium pycnometry and µ-CT technique, respectively. The adoption of that TS has shown to be viable for providing a sample with a higher level of representation.

History

Usage metrics

    Revista IBRACON de Estruturas e Materiais

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC