Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 1999.04a
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- Pages.89-94
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- 1999
Improvement of Properties in High Strength Concrete Using Fly ash and Gypsum
플라이 애시 및 석고를 활용한 고강도용 콘크리트의 성능개선
Abstract
The workability of high strength concrete using high range water reducing admixture is varied rapidly according to elapsed time. For using the high strength concrete in situ, careful caution on workability is necessary. By using fly ash as a admixture, the slump loss of concrete can be reduced considerably, but the early strength of concrete used fly ash is smaller than that not used fly ash. For the purpose of elevating the utilization of fly ash on high strength concrete, the high fluidity retention and the strength development in early age are necessary in concrete used fly ash. In this study, to improve the fluidity retention and to acquire strength development on concrete used fly ash, the gypsum is applied.
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