Journal Published Online: 01 January 1986
Volume 8, Issue 2

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.

Author Information

Najjar, WS
Cornell University, Ithaca, NY
Aderhold, HC
Cornell University, Ithaca, NY
Hover, KC
Cornell University, Ithaca, NY
Pages: 7
Price: $25.00
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Stock #: CCA10063J
ISSN: 0149-6123
DOI: 10.1520/CCA10063J