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

IMECH-IR > 流固耦合系统力学重点实验室

	Effect of fiber content and fiber length on the dynamic compressive properties of strain-hardening ultra-high performance concrete
	Zhang D1 ; Tu H(涂欢)1,2; Li Y 3; Weng YW 4
通讯作者	Tu, Huan(tuhuan@imech.ac.cn)
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
	2022-04-18
卷号	328 页码:10
ISSN	0950-0618
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.
关键词	Strain hardening ultra-high performance concrete PE fiber Dynamic properties Impact SHPB
DOI	10.1016/j.conbuildmat.2022.127024
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000773502700003
关键词[WOS]	ENGINEERED CEMENTITIOUS COMPOSITES ; REINFORCED CONCRETE ; MECHANICAL-PROPERTIES ; INCREASE FACTOR ; BEHAVIOR ; RESISTANCE
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
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
项目资助者	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
论文分区	一类
力学所作者排名	1
RpAuthor	Tu, Huan
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/88845
专题	流固耦合系统力学重点实验室
作者单位	1.Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China; 2.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; 3.Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China; 4.Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hong Kong, 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.

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