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Keywords |
염해 ; 동결융해 ; 표면스케일링 ; 고로슬래그 미분말 ; 3성분계 콘크리트 ; Salt damage ; Freezing-thawing ; Surface scaling ; Ground granulated blast-furnace slag ; Ternary concrete |
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Abstract |
This study presents the experimental results of frost durability including resistance to freezing-thawing and surface scaling of concrete. Mixing design was proportioned with the various water - binder ratio between 0.37 and 0.47 and three different binder compositions corresponding to Type I cement without any supplementary cementitious materials (OPC), Tyre Ⅱ cement with 50% blast-furnace slag replacement (BFS50), and ternary cement with Type Ⅲ cement, 15% fly ash, and 35% slag replacement (BFS35%+FA 15%). Test results showed that the mixing design with BFS50% and BFS35%+FA15% exhibited higher durability factor than that made with OPC only. Finally. the use of blend cement containing slag can be used effectively in terms of frost durability of the concrete exposed to severe condition under coastal environment like as flying salt. sea water spray. etc.
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