원문정보
The Fire Resistance Properties of the High Strength Concrete with Various Contents of Nylon and Polypropylene Fibers
초록
영어
This study investigated the fire resistance properties of high strength concrete due to the various mixing ratios of nylon and PP fibers. Ahead, on the fresh concrete, All of the changing fiber contents satisfied 700±100mm on slump flow and 3.0±1.0% on air content. The compressive strength of all were about 70MPa, and tensile strength was about 9% of the compressive
strength. However, there was not definite tendency due to change of fiber content. On the spalling properties after fire test, spalling and scaling occurrence on below 0.03% of fiber content, and spalling was prevented on above 0.04% of fiber content. The residual compressive strength was above 30% on more 0.03% of fiber content. Especially, it was about 59% in the case
that nylon and PP fiber was used concurrently on 0.05% of fiber content. Totally, the spalling was prevented on 0.04% of fiber content, but 0.05% of fiber content was the best condition considering safety and economic.
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
4. 결론
참고문헌