Evaluation on Spalling Properties of Polypropylene Fiber reinforced Concrete by Restrained Ring-type Test

구속 링형 시험에 의한 PP섬유 혼입 콘크리트의 폭렬 특성 평가

In this study, the spalling properties of Polypropylene reinforced concrete were evaluated by the restrained ring-type test. As a result of the experiment with the fiber mixture ratio set at 0, 0.15 vol.%, The PP fiber reinforced specimen showed lower water vapor pressure as a whole than the Plain specimen, but the restraint stress was measured to be higher. This is thought to be due to the fact that higher thermal stresses were applied in the PP fiber reinforced test specimen.