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Title |
Effect of Fiber Volume Fraction on Bond Properties of Structural Synthetic Fiber in Polypropylene Fiber Reinforced Cement Composites
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Keywords |
부착강도 ; 계면인성 ; 폴리프로필렌섬유 ; 구조용 합성섬유 Bond strength ; Interface toughness ; Polypropylene fiber ; Structural synthetic fiber |
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Abstract |
The bond properties between polypropylene fiber reinforced cement composites and structural synthetic fiber have been investigated. in this paper. Three levels of polypropylene fibers volume fraction were used, 0.10%, 0.15%, and 0.20% in a series of Dog-bone pull out tests. The bond strength between structural synthetic fiber and polypropylene fiber reinforced cement composites increases with the volume fraction of polypropylene fiber, but the bond strength decreases above the amount of 0.20% by volume of polypropylene fiber reinforced cement composites. Also, the addition of polypropylene fiber a significant improved the interface toughness and the frictional resistance, The microstructure of structural synthetic fiber surface was investigated after the pullout test. The scratched of structural synthetic fiber increased with the polypropylene fiber volume fraction.
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