Investigation of moisture content and distribution with radar and active thermography

Title: Investigation of moisture content and distribution with radar and active thermography
Author(s): C. Maierhofer, J. Wöstmann, C. Trela, M. Röllig
Paper category : conference
Book title: RILEM Symposium on On Site Assessment of Concrete, Masonry and Timber Structures - SACoMaTiS 2008
Editor(s): L. Binda, M. di Prisco, R. Felicetti
Print-ISBN: 978-2-35158-061-5
e-ISBN: 978-2-35158-075-2
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 411 - 420
Total Pages: 10
Nb references: 19
Language: English

Abstract: Very often, the origin of damage is enhanced moisture content either at the surface or inside the wall and structural elements of the building. This damage has not only an influence on the durability but might lead to spalling of brick and mortar and is thus relevant for the safety of the structure.
The assessment of moisture damage requires the application of non-destructive testing methods covering large areas of the surface and volume and giving quantitative data of periodic investigation. Although several methods are available, there is a lack of information concerning the application, interpretation and quantification of methodologies and data.
In this paper, applications of radar and active thermography will be presented. Laboratory and case studies will be described concerning the determination of moisture content and moisture distribution parallel as well as perpendicular to the surface. The most relevant parameters having an influence on measurement limits and accuracy (electrical and thermal material properties, measurement parameters) will be described. Future needs for modifications of methods and new guidelines and recommendations will be outlined.

Online publication: 2009-05-26
Publication type : full_text
Public price (Euros): 0.00