低掺量纤维混凝土增强抗裂性能试验研究

Experimental study on crack resistance reinforcement of low doping fiber concrete

针对改性聚丙烯纤维与钢纤维在混凝土中混合应用技术问题,结合钢—聚丙烯混合纤维混凝土抗裂、基本性能与基准混凝土进行了对比试验研究。试验结果表明,混合纤维混凝土明显改善混凝土抗压、抗折性能,提高混凝土抵抗早期收缩裂缝的能力,有利于提高混凝土结构的耐久性。

Cope with the application technical problem of mixing with modified polypropylene fiber and steel fiber in concrete,incorporate mixture＇s crack resistance and fundamental characteristic＇s reinforcement, and compare with steel-polypropylene fiber concrete and common concrete through contrast test.Experimental results indicate that compressive strength and folding strength of mixed fiber concrete have been increased.On the other hand, the early shrinkage cracks resistance and endurance of concrete structure have been strengthened.