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규산나트륨을 알칼리 자극제로 사용한 알칼리 활성 슬래그 콘크리트의 강도 특성
송진규(Song Jin-Kyu),이강석(Lee Kang-Seok),양근혁(Yang Keun-Hyeok),한선애(Han Sun-Ae) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
This study investigated the strength development of alkali-activated slag concrete, which used ground granulated blast furnace slag(GGBS) as a source material, based on the mix proportions for alkali activated(AA) mortar from previous research. Alkali-activated slag concrete exhibited excellent early strength development, and the strength was about 1.5 to 3 times higher than ordinary portland cement(OPC) at age 1day and 3days. As strength property with mixing condition, the compressive strength was higher as water-to-binder(W/B) ratio was lower. Although the early strength was higher as the value of alkali quality coefficient QA was higher, the relationship did not continue in the long-term age. The equation proposed from investigation of AA mortar was applied to alkali-activated slag concrete with a slight modification and without additional variable analysis process, and the compressive strength predicted by this modified equation at 28days corresponded well with experimental results.