凯泰（CTA）改性聚丙烯粗纤维在混凝土中的应用研究 北京中纺纤建科技有限公司，北京 100025 摘要：用钢纤维阻止硬化混凝土的开裂，提高混凝土韧性和抗冲击性能时，钢纤维存在易锈蚀、易结团、磨损机械、运输及施工困难等问题，尤其在潮湿工况下的海港工程、易于出现渗水的隧道工程、接触腐蚀气体等恶劣环境中，钢纤维的易锈蚀等缺陷严重影响了混凝土的耐久性，减少了工程的安全运行寿命。采用有机材料经特殊加工工艺制得的凯泰（CTA）改性聚丙烯粗纤维，为这些问题提供了一个全新的解决办法，在保证较好的工作性能及抗压强度下，与钢纤维相比用很少的掺加量，可以达到近似于钢纤维的增强增韧效果，特别是在恶劣条件下使用，对改善混凝土的耐久性更有重要意义。本文通过分析凯泰（CTA）改性聚丙烯粗纤维对喷射混凝土及高性能混凝土的性能影响，探讨了凯泰（CTA）改性聚丙烯粗纤维替代或部分替代钢纤维或钢丝网的可能性及应用前景。 关键词：钢纤维    凯泰（CTA）改性聚丙烯粗纤维    纤维混凝土    韧性    耐久性 A Study On The Application Of CTA Fiber In Concrete Jin Jian,Liu Lijun,Shi Xiaoxing Beijing CTA Fiber Co.,Ltd,Beijing 100025, China Abstract：When used to prevent the crack of hard concrete to appear ,steel fiber can improve toughness and impact resistance, But steel fiber tends to rust, tangle with each other and to be difficult to convey，construct，especially under the moist condition such as tunnel and maritime projects. These defect of steel fiber has a bad damage on the durability of the concrete. Therefore, We prepare CTA steel wire-like fiber by using organic materials and special technics to solve the problem. Under the precondition of the concrete having high performance , the concrete adding fewer CTA fiber, has as good effect as the the concrete adding steel fiber. This paper studies the influence of CTA steel wire-like fiber on the properties of shot concrete and high-performance concrete,and also discusses the possibility and the future of the CTA steel wire-like fiber partially replacing steel fiber or steel meshwork. Key words：steel fiber; CTA steel wire-like fiber; fiber concrete; toughness; durability 全文下载：凯泰（CTA）改性聚丙烯粗纤维在混凝土中的应用研究