• Proceedings of the Korea Concrete Institute Conference
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• 1997.04a
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• pp.118-123
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• 1997

The strength development of Flyash concrete containing various amount of Flyash (0, 10, 30, 50%) using as a cement replacement material was investigated two types of curing conditions, namely water curing at $21^{\cire}C$ and steam curing at $25^{\cire}C$ were adopted for this work, in water curing the strength development of Flyash concrete was always inferior to that of OPC (Ordinary Portland Cement) concrete at early ages, although the differences were dependant up percentage of Flyash. The strength of Flyash concrete based on equivalent strength development at 28 days was also tested and the results exhibited that the strength was improved at early days, specially, the concrete containing 30% of Flyash, in steam curing for the same mix(270kg/$\textrm{cm}^2$) the strength of Flyash concrete similar to that of OPC concrete, in other words. Flyash was strongly influenced by curing temperature in the strength development.

• Magazine of the Korea Concrete Institute
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• v.10 no.1
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• pp.101-108
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• 1998

시멘트 대체재로 사용하는 플라이애쉬(0, 10 , 30 ,50 %)를 혼입한 콘크리트의강도발현을 관찰하기 위해 각각 21$^{\circ}C$에서 수중양생과 85$^{\circ}C$에서 증기양생방법을 채택하여 실험하였다. 수중양생한 보통 콘크리트는 플라이애쉬 혼입량이 증가할수록 조기재령에서는 낮게 강도발현을 하였으나. 28일 압축강도를 기준으로 하여 물.시멘트비를 변화한 배합비(결합재량 증가)의 실험결과는 조기강도발현이 향상되었다. 특히 플라이애쉬를 30%혼입한 콘크리트는 우수하게 강도발현을 하였다. 그리고 동일한 28일 압축강도를 갖는 배합비(결합재량 증가)에서 증기양생한 플라이애쉬콘크리트는 보통콘크리트보다 강도발현이 비슷하거나 향상되었으며, 양생온도는 플라이애쉬콘크리트의 강도발현에 많은 영향을 미치는 것으로 관찰되었다.