복합 유기섬유 혼입율 변화에 따른 고성능 콘크리트의 폭렬방지

다국어 초록 (Multilingual Abstract)

This study analyzed fire-resistant stability of high performance concrete according to the change of hybrid organic fiber. Firstly, from the flowing characteristics of the fresh concrete, all mixing conditions satisfied target range, the fluidity due to the increase of fiber was lowered to 20%, air content generally had no variation as the hybrid organic fiber contents is increased. From the characteristic of hardened concrete, the compressive strength showed the different tendencies, respectively according to fiber contents, in case of mixing with PP 0.025%, it was appeared to be increased by about 6.5% than plain. From the fire-resistant characteristic, it was over 0.1% in case of using PP alone and over 0.075% in case of using NY alone. But, in case of PP+NY, if it was over 0.05(0.025+0.025)%, spalling was appeared to be prevented, the smallest mass loss rate was appeared and the residual compressive strength rate also was appeared to be most excellent. Synthetically, considering the characteristic of the fresh concrete the mechanical characteristic and further the economical efficiency, the case of PP 0.025%+NY0.025% mixing is judged as the most efficient spalling prevention engineering method of high performance concrete.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험계획 및 방법
• 3. 실험결과 및 분석
• 4. 결론
• 감사의 글