섬유보강 콘크리트의 내화도에 따른 압축강도의 특성에 관한 연구 = A Study on the Properties of the Compressive Strength with Fire Resistance of Fiber Reinforced Concrete

다국어 초록 (Multilingual Abstract)

This paper is a experimental study to understand the properties of compressive strength according to fire resistance of fiber reinforced concrete mixed with fiber reinforcement.
The materials for fiber reinforcement are polypropylene fiber, steel fiber, and cellulose fiber, a natural fiber.
Destructive and non-destructive test are conducted to compute the material age classified compressive strength of each reinforced fiber. Fire resistance experiment was conducted by destructive and non-destructive experiment after fire resistance experiments at 300, 600, and 900 degree on 180 days material aged specimen.
The conclusions generated by the experiment of compressive strength and fiber resistance according to the material ages of the concrete which is fiber reinforced are as follows:
1) Fiber reinforced concrete presented low strength compared with non-reinforced one from destructive compressive strength test.
2) Fiber reinforced concrete except cellulose fiber generally presented a little bit low strength compared with non-reinforced one from non-destructive compressive strength test.
3) Steel fiber rose 7.8% polypropylene fiber rose 3.2% and sellulose fiber rose 30.5% compared with non-reinforced concrete at 300 degree from destructive compressive strength experiment after fire resistence experiment. Cellulose fiber reinforced concrete was appeared most excellent in fire resistence as 23.6% higher strenth than any other fiber reinforced concrete.
4) Cellylose fiber reinforced conctete rose 14.6% compared with fiber non-reinforced concrete from the non-destructive compressive strength experiment after fire resistence experiment at 300 degree.