地下室侧墙及顶板混凝土掺改性聚丙烯纤维的作用机理及其应用

Application and Mechanism of Modified Polypropylene Fiber Added in Concrete of Basements Sidewall and Floor Slab

大量试验研究表明,经过改性的聚丙烯(PP)纤维掺入混凝土中,可以显著改善混凝土的抗裂防渗及抗冲击等性能,从而提高混凝土的耐久性。目前,纤维增强混凝土技术已经成为混凝土应用和研究最重要的领域之一。文章论述了聚丙烯纤维的特点及其作用机理,以及聚丙烯纤维在实际工程中的应用情况。

A lot of researches show that modified polypropylene （PP） fiber can significantly improve the anticracking, impermeability and impact property of concrete. Then; the durability of concrete can be enhanced. Fiber-reinforced concrete technique has been one of the most important technologies at present. In this paper, the characteristics and mechanism of PP fiber has been discussed and the practical application of PP fiber has been analyzed.