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Proceedings Paper

Bridge concrete deteriorating diagnosis by infrared thermography
Author(s): Hiroki Shibata; Nobuhiro Fukuyama; Joji Sakuma; Jun Mochizuki; Yukinori Kimura
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Paper Abstract

Bridge is indispensable as social overhead capital. In the past, concrete construction was believed to be semi-permanent. Actually, however, concrete is deteriorated by various factors including seawater damage, annual temperature change, etc. Therefore, it is now obvious that maintenance and management are essential to keep performance of the bridge. In Japan, we had many reports of using infrared thermography for diagnosis of building, mainly for delamination of tile and mortar used for surface of the building for more than 10 years. In recent years, infrared thermogrephy is more actively used for delamination of surface of the bridge. Passive method is usually used for open-air concrete structure diagnosis, which utilizes intraday environmental temperature change and/or radiation energy emitted from the sun which create delta-T of delamination portion of the concrete structure. It is very important to take thermal image at right conditions. Otherwise, you may easily fall onto false diagnosis. In our presentation, many case examples and study of thermal data will be shown, which are taken at the right condition.

Paper Details

Date Published: 18 April 2006
PDF: 9 pages
Proc. SPIE 6205, Thermosense XXVIII, 62051K (18 April 2006); doi: 10.1117/12.665441
Show Author Affiliations
Hiroki Shibata, Nippon Avionics Co., Ltd. (Japan)
Nobuhiro Fukuyama, Nippon Avionics Co., Ltd. (Japan)
Joji Sakuma, Nippon Avionics Co., Ltd. (Japan)
Jun Mochizuki, Nippon Avionics Co., Ltd. (Japan)
Yukinori Kimura, Nippon Avionics Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 6205:
Thermosense XXVIII
Jonathan J. Miles; G. Raymond Peacock; Kathryn M. Knettel, Editor(s)

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