摘要
通过应力诱导平板开裂试验,研究不同掺量剑麻纤维、耐碱玻璃纤维及两者1∶1混杂纤维增强自密实轻骨料混凝土早期抗裂性能.结果表明:3种掺入方式均能有效抑制自密实轻骨料混凝土裂缝的产生与扩展,随着纤维掺量的增加,早期抗裂性能逐渐提升,当掺量达到2.0kg/m3时,可视裂缝基本消失.混杂纤维协同工作产生的阻裂效果优于单掺情况,综合考虑自密实轻骨料混凝土的力学、工作性能和早期抗裂性能,得出混杂纤维的适宜掺量为1.0kg/m3.
The early crack resistance of sisal fiber,alkali-resistant glass fiber and both 1∶1 hybrid fiber reinforced self-compacting lightweight aggregate concrete(SCLC)with different content were studied by stress-induced plate cracking test.The results show that the three kinds of incorporation methods can effectively inhibit the crack generation and expansion in SCLC.As the fiber content increases,the early crack resistance is gradually increased.When the content reaches 2.0 kg/m3,the visible crack basically disappears.Cooperatively working hybrid fibers produce better crack resistance than single blends.Considering the mechanical properties,working performance and early crack resistance of SCLC,the suitable blending content of hybrid fiber is 1.0 kg/m3.
作者
董健苗
曹嘉威
王留阳
余浪
王慧敏
DONG Jianmiao;CAO Jiawei;WANG Liuyang;YU Lang;WANG Huimin(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China)
出处
《广西科技大学学报》
2020年第2期32-38,共7页
Journal of Guangxi University of Science and Technology
基金
广西科技厅科技攻关项目(桂科攻1114016-6)
广西科技大学研究生核心课程建设项目(0310019412)资助.
