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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Geopolymer cements and geopolymer resins are newly advanced mineral binders that are used in order to reduce the carbon dioxide generation that accompanies cement production. The effect of additives on the compressive strength of geopolymerized class-F fly ash was investigated. Blast furnace slag, calcium hydroxide($Ca(OH)_2$), and silica fume powders were added to fly ash. A geopolymeric reaction was initiated by adding a solution of water glass and sodium hydroxide(NaOH) to the powder mixtures. The compressive strength of pure fly ash cured at room temperature for 28 days was found to be as low as 291 $kgf/cm^{-2}$, which was not a suitable value for use in engineering materials. On the contrary, addition of 20 wt% and 40 wt% of blast furnace slag powders to fly ash increased the compressive strength to 458 $kgf/cm^{-2}$ and 750 $kgf/cm^{-2}$, respectively. 5 wt% addition of $Ca(OH)_2$ increased the compressive strength up to 640 $kgf/cm^{-2}$; further addition of $Ca(OH)_2$ further increased the compressive strength. When 2 wt% of silica fume was added, the compressive strength increased to 577 $kgf/cm^{-2}$; the maximum strength was obtained at 6 wt% addition of silica fume. It was confirmed that the addition of CaO and $SiO_2$ to the fly ash powders was effective at increasing the compressive strength of geopolymerized fly ash.
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참고문헌 (14)
참고문헌 신청
P. Duxson / 2007 / Cement Concr. Res 37(12):1590
J. Temuujin / 2008 / J. Hazard. Mater 164(2-3):634
J. Davidovits / 1994 / Proceedings of 1st International Conference on Alkaline Cement and Concrete, Scientific Research Institute on Binders and Materials :131
손세구 / 2008 / Preparation and its Characteristics of Fly Ash-based Geopolymeric Mortar using Low Grade Silica Waste / 한국세라믹학회지 45(7):395~400
김진태 / 2010 / 알루미노 실리케이트계 지오폴리머의 압축강도에 미치는 알카리 활성화제의 영향 / 한국세라믹학회지 47(3):216~222
J. Temuujin / 2008 / J. Hazard. Mater 164(2-3):634
J. Davidovits / 1994 / Proceedings of 1st International Conference on Alkaline Cement and Concrete, Scientific Research Institute on Binders and Materials :131
손세구 / 2008 / Preparation and its Characteristics of Fly Ash-based Geopolymeric Mortar using Low Grade Silica Waste / 한국세라믹학회지 45(7):395~400
김진태 / 2010 / 알루미노 실리케이트계 지오폴리머의 압축강도에 미치는 알카리 활성화제의 영향 / 한국세라믹학회지 47(3):216~222
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