凍結融解作用を受けたコンクリート内部の微細きれつの定量化と損傷度評価への応用

概要

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This paper presents a study on statistical feature of internal cracks developed within frost-damaged concrete. Concrete specimens were observed for internal cracking by means of digital microscope after they were subjected to a series of rapid freezing-and-thawing cycles. The intensity of cracking was estimated by means of the intersections of traverse line and cracks. The agreement of shapes between normal distribution and observed histogram of intersects was verified. Furthermore, the expedience of using intersections for quantification as well as applying a probability distribution to the estimation of cracks was substantiated. Consequent findings might provide useful information for assessing the feature of damaged concrete due to freezing and thawing.
Japan Concrete Instituteの論文