Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete

doi:10.1016/j.conbuildmat.2022.127024

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete
	Zhang D 4; Tu H(涂欢)3,4; Li Y 2; Weng YW 1
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2022-04-18
卷号	328 页码:10
关键词	Strain hardening ultra-high performance concrete PE fiber Dynamic properties Impact SHPB
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2022.127024
通讯作者	Tu, Huan(tuhuan@imech.ac.cn)
英文摘要	Strain-hardening ultra-high performance concrete (SH-UHPC) exhibits excellent mechanical properties at the quasi-static state and becomes a promising material for protective structures exposed to impact or blast threats. But its performance under loads with high magnitude and short duration remains unanswered. The focus of this study is to investigate the dynamic compressive properties of SH-UHPC under high strain rates, which are achieved by split Hopkinson pressure bar (SHPB) tests. SH-UHPC with different fiber contents of 1, 1.5, and 2 vol % and different fiber lengths of 6, 12, and 18 mm are tested. The considered strain rate ranges from 180 s-1 to ~& nbsp;300 s(-1). The results show that SH-UHPC exhibits good impact resistance in terms of integrity. Samples could remain good integrity at a strain rate of 240 s(-1). The key parameters to measure the dynamic properties, i.e. energy absorption, dynamic compressive strength, and dynamic increase factor (DIF) of SH-UHPC show strain rate sensitivity and all of them increase with strain rate. Increasing fiber content leads to a slight improvement of the impact resistance of SH-UHPC while reducing fiber length impairs the impact resistance. Empirical DIF relations of SH-UHPC are firstly proposed in this study.
分类号	一类
资助项目	College of Civil Engineering of Fuzhou University[JCYJ20200823110420001] ; National Natural Science of China ; Shenzhen Science and Technology Innovation Commission ; Department of Building and Real Estate of The Hong Kong Polytechnic University
WOS关键词	ENGINEERED CEMENTITIOUS COMPOSITES ; REINFORCED CONCRETE ; MECHANICAL-PROPERTIES ; INCREASE FACTOR ; BEHAVIOR ; RESISTANCE
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000773502700003
资助机构	College of Civil Engineering of Fuzhou University ; National Natural Science of China ; Shenzhen Science and Technology Innovation Commission ; Department of Building and Real Estate of The Hong Kong Polytechnic University
其他责任者	Tu, Huan
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88844]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hong Kong, Peoples R China 2.Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China; 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; 4.Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China;
推荐引用方式 GB/T 7714	Zhang D,Tu H,Li Y,et al. Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,328:10.
APA	Zhang D,涂欢,Li Y,&Weng YW.(2022).Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete.CONSTRUCTION AND BUILDING MATERIALS,328,10.
MLA	Zhang D,et al."Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete".CONSTRUCTION AND BUILDING MATERIALS 328(2022):10.