（1 江苏大学土木工程与力学学院， 镇江 212013； 2 河海大学土木与交通学院， 南京 210098；3 盐城工学院土木工程学院， 盐城 224051）

［摘要］为研究掺入短切纤维的玄武岩纤维织物网增强细骨料混凝土薄板的受弯性能，对掺量为0%，5%，6-5%，8%的短切耐碱玻璃纤维增强混凝土基体的抗压、抗折及劈拉等力学性能进行了测试，并对掺入短切纤维的玄武岩纤维网增强混凝土薄板的受弯性能进行了试验研究。研究结果表明：短切纤维能有效改善细骨料混凝土基材的强度和韧性，但掺量过高对其增强效果不利。掺入短切纤维后，玄武岩纤维网增强混凝土薄板的开裂荷载、极限荷载、延性及韧性等均有不同程度的提高，但掺量过高时薄板的延性和韧性会有所下降。

［关键词］短切纤维； 水泥基材料； 织物网增强混凝土； 薄板； 受弯性能

中图分类号：TU528-572， TU375-203文献标识码：A文章编号：1002-848X(2019)23-0118-05

Flexural behavior of textile reinforced concrete sheets with chopped fibers

Zhao Yongsheng1, Zhang Qin2, Zhang Zheng1, Xun Yong1，3

（1 Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China;2 College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China; 3 School of Civil Engineering, Yancheng Institute of Technology, Yancheng 224051, China)

Abstract:To study the flexural behavior of basalt textile reinforced fine aggregate concrete (BTRC) sheets with chopped fibers, the mechanical properties such as compressive, flexural and splitting strength of concrete matrix reinforced with chopped alkali-resistant glass fibers (fiber content is 0%, 5%, 6-5% or 8% of the cement mass) were tested. The flexural behaviors of BTRC sheets with chopped fibers were tested. The study results show that chopped fibers can effectively improve the strength and toughness of fine aggregate concrete, but the excessive amount of chopped fibers is not conducive to its reinforcement effect. After adding chopped fibers, the cracking load, ultimate load, ductility and toughness of BTRC sheets are increased to some extent, but the ductility and toughness of the sheets will be decreased when the content is too high.

Keywords:chopped fiber; cement-based material; textile reinforced concrete(TRC); sheet; flexural behavior