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| Titel |
Determination, by using GPR, of the volumetric water content in structures, sub-structures, foundations and soil – ongoing activities in Working Project 2.5 of COST Action TU1208 |
| VerfasserIn |
Fabio Tosti, Evert Slob |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250111215
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| Publikation (Nr.) |
 EGU/EGU2015-15199.pdf |
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| Zusammenfassung |
| This work will endeavour to review the current status of research activities carried out
in Working Project 2.5 “Determination, by using GPR, of the volumetric water
content in structures, sub-structures, foundations and soil” within the framework of
Working Group 2 “GPR surveying of pavements, bridges, tunnels and buildings;
underground utility and void sensing” of the COST (European COoperation in Science and
Technology) Action TU1208 “Civil Engineering Applications of Ground Penetrating
Radar” (www.GPRadar.eu). Overall, the Project includes 55 Participants from over
21 countries representing 33 Institutions. By considering the type of Institution, a
percentage of 64% (35 units) comes from the academic world, while Research
Centres and Companies include, respectively, the 27% (15 units) and 9% (5 units) of
Institutions. Geographically speaking, Europe is the continent most represented with
18 out of 21 countries, followed by Africa (2 countries) and Asia (1 country). In
more details and according to the Europe sub-regions classification provided by
the United Nations, Southern Europe includes 39% of countries, Western Europe
27%, while Northern and Eastern Europe are equally present with 17% of countries
each.
Relying on the main purpose of Working Project 2.5, namely, the ground-penetrating
radar-based evaluation of volumetric water content in structures, substructures , foundations,
and soils, four main issues have been overall addressed over the first two years of
activities. The first one, has been related to provide a comprehensive state of the art
on the topic, due to the wide-ranging applications covered in the main disciplines
of civil engineering, differently demanding. In this regard, two main publications
reviewing the state of the art have been produced [1,2]. Secondly, discussions among
Working Group Chairs and other Working Project Leaders have been undertaken
and encouraged to avoid the risk of overlapping amongst similar topics from other
Working Projects which directly could have dealt with moisture evaluation. As a
result, independent and complementary targets have been singled out. To cite a few,
interesting exchange of views took place in both the First and Second Action General
Meetings of Rome and Vienna, respectively, in July 2013 and May 2014. In addition, a
questionnaire with a relevant list of topics together with the identification of test
scenarios for advanced comparison of inspection procedures have gathered invaluable
information on the main expertises, fields of application, and equipments managed by the
Project participants. The heterogeneous scenario outlined consequently, has indeed
represented the third main issue to address. According to the Participants responses,
roads were found to be the main target investigated (53%) so far, followed by soil
materials (21%). In line with this, asphalt and compacted loose materials gathered the
main interest among the main constituent materials with, respectively, 39% and
22%, as well as organic soils (22%). In this framework, the intermediate scale of
investigation s, i.e., 0.01 m2 < s < 100 m2, was found to be the most used
for surveying. Finally, the fourth issue has been focused at avoiding the research
to get blocked by ensuring a continuous updating of the latest results in moisture
assessment using ground-penetrating radar achieved by Project 2.5 Participants
[3-9].
Acknowledgements
The authors would like to thank COST, for funding the COST Action TU1208 “Civil
Engineering Applications of Ground Penetrating Radar”.
References
[1] Tosti, F., Determination, by using GPR, of the volumetric water content in structures,
substructures, foundations and soil. State of the art and open issues. Proceedings of the 1st
COST Action General Meeting TU1208, Rome, Italy, 22-24 July 2013, pp. 99-105. ISBN:
978-88-548-6190-9.
[2] Tosti, F., Slob, E.C., Determination, by using GPR, of the volumetric water content in
structures, substructures, foundations and soil. In. “Civil Engineering applications of Ground
Penetrating Radar”, Springer ed., 2015.
[3] De Coster A., Tran A.P. and Lambot S. Information content in frequency-dependent,
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[4] De Coster A., Tran A.P. and Lambot S. Impact of the antenna offset and the number of
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[9] Mourmeaux N., Tran A.P. and Lambot S. Soil permittivity and conductivity
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Brussels, Belgium. |
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