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J. Korean Ceram. Soc. > Volume 40(10); 2003 > Article
Journal of the Korean Ceramic Society 2003;40(10): 1005.
doi: https://doi.org/10.4191/kcers.2003.40.10.1005
알칼리 자극제에 의한 고로수쇄슬래그의 활성화 특성
안지환, 조진상, 김형석, 한기석, 김환1
한국지질자원연구원 자원활용소재연구부
1서울대학교 재료공학부
Activation Property of Blast furnace Slag by Alkaline Activator
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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