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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title Influence of Blended Activators on the Physical Properties of Alkali-activated Slag Mortar
Authors 김태완 ; 박현재 ; 서기영
Page pp.26-33
ISSN 1226-6205
Keywords 알칼리 활성화 슬래그 모르타르 ; 혼합 활성화제 ; 수산화계열 활성화제 ; 탄산나트륨 Alkali-activated slag mortar ; Blended activator ; Caustic alkalis ; Sodium carbonate
Abstract This paper reported on the effect of blended activator on the physical properties of alkali-activated slag mortar. Five different activators(caustic alkalis) were used: sodium hydroxide(NaOH, A Case), calsium hydroxide(Ca(OH)2, B Case), magnesium hydroxide(Mg(OH)2, C Case), aluminum hydroxide(Al(OH)3, D Case), and potassium hydroxide(KOH, E Case). We blended five caustic alkalis with sodium carbonate(Na2CO3). The dosage of five caustic alkalis was 3M and sodium carbonate was 1M, 2M and 3M. The result of flow and setting time was decrease as the dosage of sodium carbonate increase. But the compressive strength was increase as the dosage of sodium carbonate increase. It was shown that there is a good effect of blended caustic alkalis with sodium carbonate in alkali-activated slag mortar.