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노출온도에 따른 슬러리 충전 HPFRCC의 휨강도 특성

Flexural Strength Properties of High Performance Fiber Reinforced Cementitious Composite under High Temperature

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한국구조물진단유지관리공학회 (The Korea Institute For Structural Maintenance and Inspection)
초록

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.

저자
  • 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