摘要
玄武岩纤维是一种目前被广泛研究应用的新型纤维增强材料。采用超细短切玄武岩纤维制作了不同纤维含量的玄武岩纤维增强混凝土(BFRC)试件,并采用霍普金森压杆(SHPB)开展了不同应变率的冲击压缩试验,分析纤维掺量和加载速率对试件动态力学性能的影响。试验结果表明:玄武岩纤维的掺入对试件动态强度的增强效不佳,但却能很好地提高试件的抗变形能力。另外,试件的强度和峰值变形都具有明显的应变率效应。
Basalt fiber is a new type of high-performance fibers and it is widely studied and used in civil engineering.In this paper a super-thin basalt fiber was used and the samples of basalt fiber reinforced concrete（BFRC） were made,then the impact compressive experiments were con-ducted by SHPB and the factor of fiber content and loading velocity were study.The experimental result show that the super-short basalt fiber could increase the limit formation and change the failure modes of the sample,but it did not enhanced the strength of the concrete.The result also showed the limit load and deformation increase as the loading rate and it show that the BFRC have strain rate effect.
出处
《混凝土》
CAS
CSCD
北大核心
2011年第2期92-94,共3页
Concrete
基金
江西省自然科学基金项目(2008GQC0050)
华东交通大学博士科研启动项目(01307001)
关键词
动态力学性能
强度
变形
应变率
dynamic mechanics behavior
strength
deformation
strain rate
