混杂纤维增强水泥基复合材料断裂性能研究
Research on Fracture Properties of Hybrid Fiber Reinforced Cementitious Composite Materials
关键词:
混杂FRCC;纤维比例;纤维类型;断裂性能
Key words:
Hybrid-FRCC; Fiber proportion; Fiber types; Fracture properties
刊期:
2016年第5期
DOI:
文章编号:
1000-4637(2016)05-49-04
基金项目:
国家自然科学基金(51308297、51578289);南京理工大学本科生科研训练立项资助
作者:
黄庆康, 孙巍巍, 董浩林,付金鑫, 冯志豪
单位:
南京理工大学土木工程系,210094)
摘要
摘 要:为了研究纤维对混杂纤维增强水泥基复合材料(简称:混杂FRCC)断裂性能的影响,进行了缺口梁的三点弯曲对比试验。试验结果表明,纤维的掺入可大幅度提升水泥基材的断裂能和断裂韧度;纤维比例对混杂FRCC的断裂能与断裂韧度有显著影响;在2.0%纤维总体积率条件下,SE-FRCC的断裂性能优于混杂FRCC;对混杂FRCC断裂性能的提升:PVA纤维<PP纤维<SE纤维。
Abstract: In order to study the influence of fiber on the fracture properties of hybrid fiber reinforced cementitious composite materials, the experiment of three point bending test for dapped-end beam was conduct. The results indicate that, the fracture energy and fracture toughness of cementitious materials can be remarkably improved by adding fiber; fiber proportion has a significant effects on the fracture energy and fracture toughness of hybrid-FRCC; under the condition of 2% fiber volume ratio, the fracture properties of SE-FRCC is superior to those of Hybrid-FRCC; that of FRCC is improved: PVA fiber<PP fiber<SE fiber.
结论
参考文献
引用本文
上一个: 聚丙烯纤维稻壳砂浆早期收缩裂缝试验研究
下一个: 型钢混凝土复合受扭构件滞回性能的研究
相关文件