改性聚丙烯纤维混凝土抗疲劳性能研究

Research on fatigue performance of modified polypropylene fiber in concrete

通过试验,研究了改性聚丙烯纤维对混凝土静力强度及疲劳性能的影响,结果表明,改性聚丙烯纤维掺加在混凝土中,混凝土的抗压强度变化不大,该纤维在混凝土中形成的乱向分布支撑体系,减少了裂纹的产生,提高了混凝土的劈裂抗拉、抗折以及弯曲疲劳性能。

This paper studied the static strength and the fatigue performance of modified polypropylene fiber in concrete by experiments, The results indicated that mixing a certain amount of modified polypropylene fiber into concrete has little intluence upon compressive strength of concrete, The modified polypropylene fibers in concrete offered a random-oriented supporting system to decrease shrinkage cracks, increased cleavage strength, flexural strength and flexural fatigue performance of concrete.