ACOUSTIC EMISSION TECHNIQUES APPLIED TO CIVIL ENGINEERING STRUCTURES

LES TECHNIQUES D'EMISSION ACOUSTIQUE APPLIQUEES AUX OUVRAGES DE GENIE CIVIL

Acoustic emission techniques have been employed: for the surveillance of civil engineering structures already in use with a view to detecting the failure of prestressing cables and the development of cracks in the concrete; to study the mechanism of the development of cracks in concrete using laboratory specimens. Special equipment was produced for the surveillance of civil engineering structures; the initial results obtained showed that the techniques were not yet sufficiently reliable and were unable to provide definite information on the development of structural degradations. The use of acoustic emission to study the development of cracks in concrete led to the definition of the dimensions of a faulty zone in a specimen subjected to tensile stress. On the other hand it was not possible to identify the different physical processes associated with the development of both very small and large cracks. Further research needs to be carried out if the technique is to be used for the systematic surveillance of civil engineering structures. This article first appeared in French in the: bull liaison lab ponts chauss, Paris, 1985-09/10, V139, 93-8. (TRRL)

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • LALOUX, R
  • ROBERT, J L
• Publication Date: 1986-4

Media Info

• Features: Figures; References;
• Pagination: 11 p.
• Serial:
  • TRRL TRANSLATION
  • Issue Number: 3279
  • Publisher: Transport and Road Research Laboratory (TRRL)

Subject/Index Terms

• TRT Terms: Acoustic emission tests; Cables; Civil engineering; Concrete; Cracking; Failure; Prestressing; Testing
• Uncontrolled Terms: Concrete cracking
• ITRD Terms: 4530: Cable; 5211: Cracking; 9115: Detection; 3355: Engineering structure; 5520: Failure; 6226: In situ; 6237: Laboratory (not an organization); 4796: Prestressed concrete; 6251: Sample (mater); 6120: Sensor; 6748: Sound; 9101: Surveillance; 6255: Test; 8538: Translation; 6767: Wave; 4520: Wire
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00465184
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: 3279
• Files: ITRD, TRIS
• Created Date: Jan 31 1988 12:00AM