This study investigated the flexural performance of high performance fiber reinforced cementitious composite (HPFRCC), which used high strength steel fibers with volume fraction 8%. Under the third-point loading using a closed-loop, servo-controlled testing system (ASTM 1609), load-deflection curves were obtained. The major test variables include silica fume replacement ratio 15% and exposure termperature, ambient and 400°C. The flexural strength was similar to the compressive strength and the absorbed fracture energy was relatively greater than other typical HPFRCC materials. This may be a composite reaction of the strong bonding between steel fiber and matrix and high compressive strength of the matrix itself. Once the specimens were exposed to high temperature 400°C the flexural strength decreased.

• 김승원(강원대학교 토목공학과 박사과정) | Kim, Seung Won
• 조현명(강원대학교 토목건설공학과 석사과정) | Cho, Hyun Myung
• 슈만(강원대학교 토목건설공학과 석사과정) | Uprety Suman
• 이장용(강원대학교 토목건설공학과 석사과정)
• 주민관(강원대학교 사회기반시스템공학과 연구교수, 공학박사) | Ju, Min Kwan
• 박철우(강원대학교 사회기반시스템공학과 교수, 공학박사) | Park, Cheol Woo 교신저자