원문정보
Fire Enduring Properties of Concrete Made with the Various Types and Maximum Sized of Coarse Aggregate
초록
영어
This study investigates spalling properties of high performance concrete, W/B 25%, made with maximum sized coarse aggregate and lightweight aggregate, adding ratio of polypropylene(PP) fiber. Test results showed that increase of the fiber content but decrease of the maximum sized aggregate inclined the fluidity of fresh concrete. Especially, fluidity was inclined in the case that
the maximum size of aggregate was 25mm. For the properties of harden concrete, the compressive and tensile strength due to increase of PP fiber content is similar tendency. The result showed that the spalling is prevented When the ratio of PP fiber was 0.10% on 20mm of the aggregate size, and residual compressive strength on 0.15% of PP fiber content was opposite
tendency to the aggregate size. There was no spalling without the fiber caused by the inner pore of aggregate in the case that lightweight aggregate was 4~6mm.
목차
1. 서론
2. 실험계획 및 방법
2.1 실험계획
2.2 사용재료
2.3 실험방법
3. 실험결과 및 분석
3.1 굳지않은 콘크리트의 특성
3.2 경화 콘크리트의 특성
3.3 내화 실험
4. 결론
참고문헌