超音波によるアル骨反応進行コンクリート構造物の劣化程度推定方法に関する研究
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概要
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The purpose of this study is to propose the method for simply estimating the as degradation of the concrete which deteriorates by the alkali-aggregate reaction. The experiment did following 3 types. In experiment of 1, compression strength of the concrete by the cutting efficiency of the core-drill was estimated. In experiment of 2, the relationship between sound velocity by reflection method within ultrasonic method and compression strength of the concrete was examined. In experiment of 3, Individual as alkal-iaggregate reaction invasion was examined by the cutting of the core test-piece at the 5cm thickness cut section ,and by giving weighted point, as alkali-aggregate reaction progress of the whole cross section was obtained. From the result of the experiment of the above, by examining the gradient of the regression formula of sound velocity and strength, the degree of the degradation of the concrete structure which alkaliaggregate reaction violated clarified that it can be easilyjudged.
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