| 알칼리 자극제에 의한 고로수쇄슬래그의 활성화 특성 |
| 안지환, 조진상, 김형석, 한기석, 김환1 |
한국지질자원연구원 자원활용소재연구부
1서울대학교 재료공학부 |
| Activation Property of Blast furnace Slag by Alkaline Activator |
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| ABSTRACT |
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This paper examines the hydration and physical properties of alkali-blast furnace slag cement activated by Na$_2$SiO$_3$, Na$_2$CO$_3$, NaOH, Na$_2$SO$_4$. Four levels of Na$_2$O content in mixtures, 1, 3, 5, and 7 wt%, were investigated, and a W/S ratio 0.5 was used to prepare paste and mortar specimens. Compressive strength measurement of mortars was carried out adding alkali activated slag 30 wt% to OPC. The main hydration products with alkali activator kinds were C-S-H,C$_4$AH$_$13/, AFt and Al(OH)$_3$ etc. For using Na$_2$CO$_3$ activated slag, hydration ratio of slag was higher than that of different activators, and Na$_2$SO$_4$ activated slag mortar appeared the highest compressive strength values at 28 days with activator content of 5 and 7 wt%. |
| Key words:
Blast furnace slag, Alkali activated, Hydration, Strength |
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