不同种类聚丙烯纤维混凝土性能对比试验

针对路面水泥混凝土的性能要求,对比研究了四种聚丙烯纤维对水泥混凝土性能的影响。结果表明,四种聚丙烯纤维对混凝土强度、韧性、耐磨性及渗透性均有不同程度的改善;聚丙烯单丝纤维能够提高混凝土的抗冻性,并且优于其他三种纤维;某些聚丙烯纤维不但没有改善混凝土的抗冻性,还使抗冻性下降;在选用聚丙烯纤维时,应根据不同的使用目的进行选择。

Comparative Experiment on Concrete Performance of Different Kinds of Polypropylene Fiber

For the performance demands of pavement cement concrete, comparative study the influence of four kinds of polypropylene fiber on the performance of cement concrete. Results show that, four kinds of polypropylene fiber on concrete strength, toughness, abrasion and permeability all have different degrees of improvement. Polypropylene single-silk fiber can improve concrete freeze resistance, and is better than other three fibers. Some polypropylene fiber not improve concrete freeze resistance, and make it decreased. Polypropylene fiber should be chosen according to different purpose when using it.