ELECTROMAGNETIC PROPERTIES OF CONCRETE AT MICROWAVE FREQUENCY RANGE

Electromagnetic properties of hardened concrete specimens are measured over a microwave frequency range from 0.1 GHz to 20 GHz. The experimentally obtained values provide information about the behavior of concrete as a material in its interaction with electromagnetic waves. In addition to the frequency variation, the effect of different moisture contents on the electromagnetic properties are studied. Properties of mortar specimens and constituents of concrete--that is, coarse aggregates, sand, and cement--are also measured. An open-ended coaxial probe method is used for the measurement of real and imaginary parts of complex permittivity of concrete. The physical significance of the measured data in nondestructive testing, including penetration depth and detectability, is discussed and demonstrated through radar measurement results. The results of this research work will serve as a basis in applying wideband microwave imaging techniques for nondestructive testing of concrete using radar.

• Record URL:
  • http://www.concrete.org/Publications/InternationalConcreteAbstractsPortal.aspx.aspx?m=details&i=370
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
• Supplemental Notes:
  • Financial support by the U.S. Army Corps of Engineers Waterways Experiment Station in Vicksburg, Mississippi, through Contract #DACW39-92-K-0029 is acknowledged.
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Rhim, H C
  • Buyukozturk, O
• Publication Date: 1998-5

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 262-271
• Serial:
  • ACI Materials Journal
  • Volume: 95
  • Issue Number: 3
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-325X
  • Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx

Subject/Index Terms

• TRT Terms: Cement; Coarse aggregates; Concrete aggregates; Concrete hardening; Electromagnetic properties; Electromagnetic waves; Measuring methods; Measuring probes; Mortar; Nondestructive tests; Radar; Sand
• Uncontrolled Terms: Hardened concrete
• Old TRIS Terms: Microwave imaging; Probes
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I25: Design of Tunnels; I32: Concrete;

Filing Info

• Accession Number: 00751265
• Record Type: Publication
• Contract Numbers: DTFH61-93-C-00012
• Files: TRIS
• Created Date: Jul 20 1998 12:00AM