A comparative assessment of microwave-based methods for moisture content characterization in stone materials

Piuzzi, Emanuele and Cannazza, Giuseppe and Cataldo, Andrea and De Benedetto, Egidio and De Giorgi, Lara and Frezza, Fabrizio and Leucci, Giovanni and Pisa, Stefano and Pittella, Erika and Prontera, Santo and Timpani, Fabrizio (2016) A comparative assessment of microwave-based methods for moisture content characterization in stone materials. Measurement (98). pp. 1-8. ISSN 0263-2241

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Abstract

In this work, the dielectric permittivity of pietra gentile and pietra leccese (two kinds of stone typically found in Cultural Heritage structures of Southern Italy), for different levels of moisture content, was characterized. Measurements were carried out by comparatively using three different probes as sensor (i.e., a patch resonator; an open-ended coaxial probe; and a standard WR90 waveguide) for increasing values of water content. Measurements were performed using a vector network analyzer and a time-domain reflectometer. The obtained laboratory results can be used to derive moisture content/relative dielectric permittivity calibration curves that could be employed, in practice, for noninvasive on-the-field moisture monitoring of pietra gentile- and pietra leccese-made Cultural Heritage structures.

Item Type: Article
Uncontrolled Keywords: Dielectric permittivity measurements, Patch resonator, Stone materials, Water content
Subjects: 600 Tecnologia - Scienze applicate
Depositing User: dottoressa Gaetana Marchesini
Date Deposited: 01 Dec 2016 14:27
Last Modified: 25 Jan 2017 08:38
URI: http://eprints.bice.rm.cnr.it/id/eprint/15661

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