混杂纤维UHPC的性能研究
Study on performance of hybrid fiber UHPC
关键词：
玄武岩纤维（BF）；钢纤维（SF）；力学性能；耐久性能；超高性能混凝土（UHPC）
Key words：
Basalt fiber(BF); Steel fiber(SF); Mechanical property; Durability; Ultra-high performance concrete(UHPC)
刊期：
2025年第6期
DOI：
10.19761/j.1000-4637.2025.06.047.06
文章编号：
基金项目：
国家自然科学基金项目（201011603）。
作者：
於亚辉1，孙有松1，康爱红2，*，吴正光2，刘 海2，董 虎2
单位：
1.江苏瑞沃建设集团有限公司，江苏 扬州225600；2.扬州大学 建筑科学与工程学院， 江苏 扬州225127
摘要
摘 要：研究了钢纤维（SF）与玄武岩纤维（BF）混掺对超高性能混凝土（UHPC）工作性、力学性能和耐久性能的影响。结果表明：掺入纤维会降低UHPC的流动性，与空白组相比，2.0%SF组UHPC的流动度降低了29.03%，1.5%BF+0.5%SF组UHPC的流动度降低了43.55%；SF与BF按适宜比例混杂，可以优化UHPC内部的微观结构，从而提高UHPC的力学性能和耐久性能，其中，0.5%BF+1.5%SF组UHPC的综合性能最佳。
Abstract: The influence of mixing steel fiber(SF) and basalt fiber(BF) on the workability, mechanical properties, and durability of ultra-high performance concrete(UHPC) was studied. The results indicate that the addition of fibers can reduce the fluidity of UHPC. Compared with the blank group, the fluidity of the 2.0%SF group UHPC decreases by 29.03%, and the fluidity of the 1.5%BF+0.5%SF group UHPC decreases by 43.55%. Mixing SF and BF in appropriate proportions can optimize the microstructure inside UHPC, thereby improving its mechanical properties and durability. Among them, the 0.5%BF+1.5%SF group of UHPC has the best comprehensive performance.
结论
SF与BF按适宜比例混杂，虽然对UHPC的工作性有一定的不利影响，但是可以产生协同作用，充分发挥各自优势，优化UHPC内部的微观结构，从而提高UHPC的力学性能和耐久性能。其中，0.5%BF+1.5%SF的掺量组合的综合性能相对较好，尤其是在提高抗折强度和劈裂抗拉强度方面有显著效果。
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引用本文
於亚辉,孙有松,康爱红,等.混杂纤维UHPC的性能研究[J].混凝土与水泥制品,2025(6):47-52.
YU Y H,SUN Y S,KANG A H,et al.Study on performance of hybrid fiber UHPC[J].China Concrete and Cement Products,2025(6):47-52.
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