THE APPLICATION OF NEUTRON RADIOGRAPHY TO THE STUDY OF MICROCRACKING IN CONCRETE

Radiography of concrete specimens using a neutron flux as the penetrating radiation has been used to identify and study microcracking. The key to the technique is the partial impregnation of the microcracks with a medium with a high neutron attenuation capacity, so as to result in a sharp contrast between the cracks and the surrounding solid mass. Gadolinium has been used as the neutron-attenuating contrast agent, which is applied in the form of an aqueous solution of gadolinium nitrate. The resulting radiographs are compared with more conventional X-ray studies of the same specimens. Neutron radiography appears to be more effective than X-radiography for the identification of cracking.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3528769
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Najjar, W S
  • Aderhold, H C
  • Hover, K C
• Publication Date: 1986

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 103-109
• Serial:
  • Cement, Concrete and Aggregates
  • Volume: 8
  • Issue Number: 2
  • Publisher: American Society for Testing and Materials (ASTM)
  • ISSN: 0149-6123
  • Serial URL: http://journalsip.astm.org/JOURNALS/CEMENT/cca_home.html

Subject/Index Terms

• TRT Terms: Concrete; Microcracking; Neutrons; Radiography
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00474636
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 31 1988 12:00AM