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発表 FACTORS INFLUENCING CHLORIDE PENETRATION RESISTANCE OF CONCRETE IN LABORATORY ACCELERATED AND OUTDOOR EXPOSURE TESTS

作成年度 2015 年度
論文名 FACTORS INFLUENCING CHLORIDE PENETRATION RESISTANCE OF CONCRETE IN LABORATORY ACCELERATED AND OUTDOOR EXPOSURE TESTS
論文名(和訳)
論文副題
発表会 The Fifth International Conference on Construction Materials
誌名 Proceedings of the ConMat'15 Conference
巻・号・回
発表年月日 2015/08/19 ~ 2015/08/21
所属研究室/機関名 著者名(英名)
iMaRRCEisuke Nakamura
iMaRRCTsuyoshi Ishii
iMaRRCHiroshi Watanabe
抄録
An experimental investigation was performed to study factors influencing the chloride penetration resistance of concrete in laboratory-accelerated and outdoor exposure tests. Concrete specimens fabricated with and without supplementary cementitious materials (SCMs) were employed for the rapid chloride migration test, immersion test, and outdoor exposure test. The experimental results obtained from the rapid chloride migration test and immersion test indicated that mixing SCMs contributed to improving the chloride penetration resistance of concrete. Additionally, the rapid chloride migration test was found useful for clarifying the time-dependent development of the chloride penetration resistance of concrete containing SCMs. On the other hand, chloride profiles of the concrete specimens that had been exposed near a coastline in Japan for approximately two years were influenced by carbonation of the specimen surface. The concrete specimens containing high-volume SCMs showed greater chloride penetration than did those made only with ordinary Portland cement. It should be noted that this adverse effect due to the use of high-volume SCMs was not predictable in the conventional laboratory-accelerated tests.
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