고인성 섬유보강 시멘트 모르터의 직접인장성능 = Direct Tensile Properties of Multiple-Cracking Type HPFRCCs

다국어 초록 (Multilingual Abstract)

The synthetic fibers such as polyvilyl-alcohol(PVA) fiber are poised as a low cost alternative for reinforcement in structural applications. It has been reported that synthetic fiber in cement composites can control restrained tensile stresses and cracks and increase toughness, resistance to impact, corrosion, fatigue and durability. High performance fiber reinforced cementitious composite(HPFRCC) shows ultra high ductile behavior in the hardened state, because of the fiber bridging properties. In this study, it was proposed a direct tensile testing machine(DTTM) to be simple and to be applied to HPFRCC, and examined the tensile properties of HPFRCC by this machine. As a results, it was confirmed that a direct tensile test of HPFRCC could be certainly carried out DTTM to be developed in this study. Also, tensile strength and yield strength of HPFRCC were similar regardless of specimens thickness. And, all specimens revealed the stable strain-hardening behavior and multiple cracking in flexible and tensile loads. But, deviation of strain at ultimate tensile strength increased with the increase of specimen thickness.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 1축 직접인장시험과 시험장치의 제안
• 3. 인장성능과 치수효과 검증에 관한 실험
• 4. 결론
• 참고문헌