The Method of Evaluation and Implementation of the Non-destructive Test on Aggregate denuded Concrete Structure for Irrigation and Drainage

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  • 骨材が露出した水利コンクリート構造物における非破壊試験の実施・評価方法
  • コツザイ ガ ロシュツ シタ スイリ コンクリート コウゾウブツ ニ オケル ヒハカイ シケン ノ ジッシ ヒョウカ ホウホウ

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Abstract

The surfaces of the servicing concrete structure for irrigation and drainage have the denuding aggregates. Various diagnoses can't be done properly by the test method for ultrasonic pulse velocity, because close adhesion between pulse terminal and aggregate denuded concrete surface is insufficient. In this research, the solution of this problem by coating method that mediated material is applied to the concrete was examined. As a result, the ultrarapid hardening cement and the epoxy clay were suitable as a mediated material, and the method to evaluate ultrasonic pulse velocity of the coated concrete by the mediated material were clarified. Moreover, the method to evaluate rebound number and impact points of the coated concrete by the mediated material was recommended.

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