LONG TERM OBSERVATION OF RC-BRIDGE USING CHANGES IN NATURAL FREQUENCY. NORDIC CONCRETE RESEARCH. PUBLICATION NO 7

Laboratory tests have shown that an early indication of deterioration seems possible by observing the relative change of eigenfrequencies. A relative change of about 25% was found in the very advanced stage of deterioration. Tests have been carried out in 1986-88 on a 3-span RC footbridge, to evaluate the accuracy when using a simple measurement of a well defined eigenfrequency to give a long term overall indication of deterioration or crack formation. It is concluded that the technique should be considered as a tool when evaluating structural integrity in simple RC structures. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08006377
• Corporate Authors:

  Nordic Concrete Federation

  Ingeniorernes, Kronprinsesgade 17 N
  Oslo 2,   Norway 
• Authors:
  • Askegaard, V
  • Mossing, P
• Publication Date: 1988-12

Media Info

• Features: References;
• Pagination: p. 20-27
• Serial:
  • Publication of: NORDIC CONCRETE FEDERATION
  • Publisher: NORDIC CONCRETE FEDERATION
  • ISSN: 0800-6377

Subject/Index Terms

• TRT Terms: Bridges; Cracking; Deflectographs; Detection and identification; Detectors; Deterioration; Equipment; Footbridges; Loads; Reinforced concrete; Tests
• ITRD Terms: 3455: Bridge; 5211: Cracking; 6187: Deflectograph; 9115: Detection; 5255: Deterioration; 3674: Equipment; 3475: Footbridge; 5567: Load; 4794: Reinforced concrete; 6255: Test
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00493283
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM