FUNDAMENTAL STUDY ON IMPROVING IN MEASUREMENT AQURRACY OF THREE-DIMENSIONAL STRAIN DISTRIBUTION INSIDE CONCRETE UNDER COMPRESSION STRESS BY X-RAY CT

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  • X 線 CT による圧縮応力下のコンクリート内部の 3 次元ひずみ分布計測向上のための基礎研究
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Abstract

<p>Takayuki FUMOTO, Taijyu URA and Stephen A. HALL On the effective use of resources, the concrete should be made by mixing many kinds of material. Understanding the influences of the material qualities on properties of the concrete is necessary for a proper material mixture. One of the powerful tools for understanding those influences is a collaboration of an X ray computed tomography and a digital volume correlation for measuring displacement inside the concrete. We have been developing some techniques for applying to the concrete specimen. In this study, the strain distribution inside the specimens of concrete, paste and mortar with the coarse aggregate of different deformation resistance under the compressive stress were measured using our current techniques. As the results, it is cleared that our current technique shows the strain concentration area of a mortar part inside the specimen before a destruction. Moreover, It is necessary to further improvement of the current techniques for understanding the destruction process of mortar and concrete specimen in more detail.</p>

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