CRACK WIDTH EVALUATION OF COLUMN MEMBERS USING HIGH RESOLUTION IMAGES WITH DIFFERENT BRIGHTNESS

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  • 明るさの異なる高解像度画像を用いた柱部材のひび割れ幅評価

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Abstract

<p>The purpose of this study is to establish an efficient method for investigating the damage state of concrete. To achieve this purpose, a basic study on the measurement method of concrete crack width using high-resolution photographs was conducted on a damaged RC column specimen. We then examined the effect of shutter speed, which makes the difference in the light intensity that affects image quality. For cracks with a visual measurement value of 0.30mm or more, the average accuracy of the image measurement value was 1.13, which was generally good.</p>

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