硅酸盐通报2025，Vol.44Issue(7)：2378-2387,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1296
SMAF-FRCC抗折性能及循环加载性能研究
Flexural Properties and Cyclic Loading Performance of SMAF-FRCC
徐龙飞 1刘世玺 2李艳杰 1杨令强1
作者信息
- 1. 济南大学土木建筑学院,济南 250022
- 2. 济南水务集团有限公司,济南 250013
- 折叠
摘要
Abstract
Superelastic shape memory alloy fibers(SMAF)were randomly interspersed within a modified polypropylene(PP)fiber-reinforced cementitious composite(FRCC)mixture to fabricate self-centering shape memory alloy fiber reinforced cementitious composite(SMAF-FRCC)composite beam specimens.This study investigated the effects of the diameter,content,and length of SMAF on the flexural strength,self-centering performance,and energy dissipation capacity of SMAF-FRCC composite beam specimens.The results demonstrate that the addition of SMAF significantly improves the flexural strength,self-centering performance,and energy dissipation capacity of the composite beam specimens,enhancing the material's ductility and toughness.Among them,When the length of SMAF is 25 mm and the content is 0.50％(volume fraction),flexural strength of the specimens is the highest,which is increased by 21.84％compared with the control group.When the length of SMAF is 20 mm and the content is 0.75％(volume fraction),the self-centering performance of the specimen is the best as a whole.In the last cycle of the cyclic loading flexural test,the self-centering ratio is increased by 19.57％compared with the control group.The study provides experimental evidence for the future development of SMAF-FRCC smart material systems with crack self-healing and deflection self-centering capabilities.关键词
纤维增强水泥基复合材料/形状记忆合金纤维/超弹性/抗折强度/自定心/耗能Key words
fiber-reinforced cementitious composite/shape memory alloy fiber/superelasticity/flexural strength/self-centering/energy dissipation分类
建筑与水利引用本文复制引用
徐龙飞,刘世玺,李艳杰,杨令强..SMAF-FRCC抗折性能及循环加载性能研究[J].硅酸盐通报,2025,44(7):2378-2387,10.
