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。
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.
作者
赵永胜
张勤
张正
荀勇
Zhao Yongsheng;Zhang Qin;Zhang Zheng;Xun Yong(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China;College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China;School of Civil Engineering,Yancheng Institute of Technology,Yancheng 224051,China)
出处
《建筑结构》
CSCD
北大核心
2019年第23期118-122,共5页
Building Structure
基金
国家自然科学基金资助项目(51508154,51478408)
江苏省自然科学基金资助项目(BK20150803)
中国博士后科学基金面上项目(2015M581711)
住房和城乡建设部科技项目(2015-K4-012)
江苏省建设系统科技项目(2014ZD08)
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
chopped fiber
cement-based material
textile reinforced concrete(TRC)
sheet
flexural behavior
