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Title |
Properties on the Freeze-Thaw of Concrete Subjected to Seawater Attack
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Authors |
박광필 ; 김성수 ; 이승태 ; 김종필 ; 정호섭 |
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Keywords |
동결융해 ; 해수침식 ; 상대동탄성계수 ; 복합열화 ; 내구성 reeze-thaw action ; seawater attack ; relative dynamic modulus ; combined deterioration ; durability |
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Abstract |
In this study, deterioration degrees of concrete were investigated at laboratory under seawater attack and cycling freeze-thaw, which are major durability performance deterioration factors of concrete. Deteriorations of mixed concrete using Portland & blended cement were examined by instrumental analysis of changes in relative dynamic modulus of elasticity and compressive strength. After 520 cycles of freeze-thaw, relative dynamic modulus of elasticity and compressive strength of concrete mixed with normal Portland and LHC over 75% showed relatively low resistance of approximately 44% of those values of SRC. Concrete replaced with 50% fine powder of blast furnace slag showed the most excellent freeze-thaw resistance among the tested blended cement concrete.
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