Determination of Volumetric Water Content of Concrete Using Ground-penetrating Radar

A large number of reinforced or prestressed concrete pathologies require the presence of water to develop. In this context, the quantification of water content is an important phase for the diagnosis of concrete. Propagation of electromagnetic waves is controlled by its electromagnetic properties, mainly influenced by the presence of water in the case of concrete. The authors propose to use the direct transmitter–receiver radar wave to determine the moisture of the cover concrete. The Wide Angle Reflection Refraction measurement technique is used to obtain the speed of the direct wave. A method is used to extract the group and the phase velocity of this wave. It is shown that the speed is not dependent to the frequency between 300 MHz and 1.2 GHz in these testing conditions. By using 2 different concretes partially saturated, it is shown there is a linear relation, independent of the concrete, between the volume water content and the propagation velocity of the direct wave on the one hand and its attenuation on the other hand.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier
• Authors:
  • Klysz, G
  • Balayssac, J-P
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 1164-1171
• Serial:
  • Cement and Concrete Research
  • Volume: 37
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Concrete construction; Corrosion; Durability; Electromagnetic properties; Electromagnetic waves; Ground penetrating radar; Moisture content; Prestressed concrete; Reinforced concrete; Structural analysis
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01076972
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 27 2007 7:07AM