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[VI-639] Introducing a portable near-infrared ray meter to civil construction

*Toshihiro Kotsuki¹, Koji Matsunaga¹, Rie Sasaoka¹, Takashi Obara¹, Katsutoshi Fujisaki¹, Michitaka Okamoto¹, Mai Masutani¹, Ken Adachi² (1. Kajima Corporation, 2. West Nippon Expressway Company Limited)

Keywords:Information and communication technology, Near-infrared ray, Near-infrared ray_