A Study on the Effectiveness of Heat Infrared Imaging Method for Monitoring the Physical Condition of the Mortar Walls

  • Yoshioka Ryouhei (Graduate School of Science and Technology, Nagasaki University) ;
  • Tachiiri Kaoru (Department of Geography, University of British Columbia) ;
  • Asari Kimihiro (Graduate School of Science and Technology, Nagasaki University) ;
  • Gotoh Keinosuke (Graduate School of Science and Technology, Nagasaki University)
  • Published : 2004.10.01

Abstract

In Japan for protecting the slides of steep sloped areas covering the face of slopes by sprayed mortar became popular since 1970s. But, these mortar walls are getting older now. In this background, this study aims to find ways to develop a diagnostic technique of these faces of slope without physically contacting or destroying them. In doing so, we have used heat infrared imaging processing method and developed a simulation model to predict the weak portion of the wall. The results revealed that, by following the model vacuum of mortar wall can be detected having thickness up to 15cm.

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