Effect of polypropylene high strength wire on durability of concrete|Tengzhou Junchi Textile Co., Ltd.PP yarn

    Polypropylene high strength wire is mainly a material to improve the durability of concrete, if the anti-fatigue performance as a pavement bridge concrete durability indicators, the understanding of course is correct. In addition, the improved effect of polypropylene high strength wire on concrete performance includes the improvement of the quality of the surface concrete by reducing the bleeding of the concrete, thereby improving the wear resistance of the concrete and the significant improvement in the barrier effect Of the anti-leakage performance. Porcelain high strength wire on the other durability indicators such as anti-permeability, anti-freeze and anti-salt, chemical resistance and other adverse effects, but the degree of improvement remains to be further studied.
    ① polypropylene high-strength wire can eliminate or reduce the number of concrete cracks in the concrete and scale, this effect can not only effectively prevent the plastic cracking of concrete, the performance of hardened concrete is also very useful.
    ② Although the high strength of polypropylene fiber can not make the hardening concrete quasi-static load strength has improved significantly, but by improving the impact resistance of concrete and anti-fatigue performance, so that the use of concrete pavement deck to improve performance.
    ③ Because of the difference in fiber fineness, elastic modulus and other properties, the effect and mechanism of polypropylene high strength wire and steel fiber on concrete performance are different, and both have their own strengths.
    ④ due to the reasons for the evaluation of the test method, the indoor small specimen can not fully demonstrate the use of polypropylene high strength wire in the actual effect of the project, resulting in the actual use of polypropylene high strength wire underestimated.