Quantitative electrical imaging of three-dimensional moisture flow in cement-based materials

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Danny Smyl
  • Milad Hallaji
  • Aku Seppänen
  • Mohammad Pour-Ghaz

Organisaatiot

  • North Carolina State University
  • WSP USA
  • University of Eastern Finland

Kuvaus

The presence of moisture significantly affects the mechanical, hydraulic, chemical, electrical, and thermal properties of cement-based and other porous materials, and therefore, methods for detecting and quantifying the moisture ingress in these materials are needed. Recent research studies have shown that the ingress of moisture in porous materials can be qualitatively imaged, with Electrical Impedance Tomography (EIT) an imaging modality which uses electrical measurements from object's surface to reconstruct the electrical conductivity distribution inside the object. The aim of this study is to investigate whether EIT could image the three-dimensional volumetric moisture content within cement based materials quantitatively. For this aim, we apply the so-called absolute imaging scheme to the EIT image reconstruction, and use an experimentally developed model for converting the electrical conductivity distribution to volumetric moisture content. The results of the experimental studies support the feasibility of EIT for quantitative imaging of three-dimensional moisture flows in cement-based materials. (C) 2016 Elsevier Ltd. All rights reserved.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1348-1358
Sivumäärä11
JulkaisuInternational Journal of Heat and Mass Transfer
Vuosikerta103
TilaJulkaistu - joulukuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 15877572