Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)
- 2007.04a
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- Pages.71-74
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- 2007
Fundamental Properties of High Strength Concrete Depending on the Elaine of Cement Particle Classifying
입도분급 시멘트의 분말도 변화에 따른 고강도 콘크리트의 기초적 특성
Abstract
This study investigates the fundamental properties of high strength concrete made with various blame values of cement, manufactured by the particle screening method in a pulverizing process. Test showed that concrete using lower blame of cement, such as large particle (L) and both ordinary and large particle (OL), increased the fluidity of fresh concrete. As tine progressive, it was noticeable that the specimens using ordinary cement (OPC) gradually decreased the fluidity, but the other specimens showed the sudden decline until 30 minutes, which is followed by a gradual decrease after 60 minutes. For the setting time, higher blaine of cement accelerated the initial and final setting time, especially concrete using minute size of cement (M) was 10 hours faster than OPC. Compressive strength of L exhibited similar value at 1 days as to that of strength in OPC at 3 days. Importantly, the specimens using M also revealed the similar strength value, regardless of curing temperature between