초고성능 섬유보강 콘크리트의 초저온 노출시 역학적 거동 및 자기치유 성능 평가

초록

In this paper the compressive, tensile tests and preliminary flexural test and SEM image analysis were performed after inducing micro-cracks on the flexural specimens to examine the mechanical properties and self-healing capacity of ultra-high-performance fiber-reinforced concrete (UHP-FRC) at three temperature conditions: ambient temperature, cryogenic temperature (- 170℃), and recovered ambient temperature. Test results found that the mechanical properties of UHP-FRC were significantly enhanced and micro-cracks formed on the surface of specimens were fully cured during 28 days moisture curing.