Study on bond properties of corroded NPR (negative Poisson's ratio) steel bar embedded in marine concrete

doi:10.1016/j.istruc.2023.105251

	Study on bond properties of corroded NPR (negative Poisson's ratio) steel bar embedded in marine concrete
	Zhou, Junhao 1; Shang, Huaishuai 1; Chen, Yu 2; Fan, Liang 3; Li, Yongsheng 4; Liu, Hao 4
	2023-11-01
发表期刊	STRUCTURES
ISSN	2352-0124
卷号	57 页码:12
通讯作者	Shang, Huaishuai(shanghuaishuai@aliyun.com)
摘要	In this work, 48 pull-out test specimens of 150 mm x 150 mm x 150 mm have been examined to assess the bond behavior between corroded NPR (negative Poisson' s ratio steel bar) and marine concrete with different anchorage bond length. Three variables are considered: two types of steel bar (NPR bar and HRB400 steel bar), theoretical corrosion ratio of steel bar (rho = 0, 1\% , 2\% , 3\% ), anchorage length (5 or 7 times of steel bar diameter). Experiment results showed that under the same extent of bars theoretical corrosion ratio and anchorage length, the bond between NPR and marine concrete exhibits lower value than that of HRB400. Moreover, as measured mass corrosion ratio increases, the bond strength of NPR and HRB400 embedded in marine concrete shows a trend of first rising and then falling. For NPR bas, the measured mass corrosion ratio corresponding to the peak value of bond strength is about 1.8 %. Furthermore, considering the condition of rho = 0, 1\% , 2\% , NPR bar specimens with anchorage length of 7d show slightly lower bond capacity than that of specimens with anchorage length of 5d due to the inhomogeneity of bond stress distribution of steel bar and surrounding concrete. Finally, the bond stress-slip constitutive model between two types of steel bars and marine concrete considering different working conditions has been proposed.
关键词	NPR steel bar Marine concrete Bond behavior Bond-slip constitutive model
DOI	10.1016/j.istruc.2023.105251
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation project[52378245] ; Major Basic Research Projects of Shandong Natural Science Foundation[ZR2022ZD33] ; Qingdao Science and Technology Benefiting the People Demonstration Special Project[23-2-8-cspz-9-nsh]
WOS研究方向	Engineering
WOS类目	Engineering, Civil
WOS记录号	WOS:001097671900001
出版者	ELSEVIER SCIENCE INC
WOS关键词	BEHAVIOR
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/183901
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Shang, Huaishuai
作者单位	1.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China 2.China Railway Construction Engn Second Constructio, Qingdao 266510, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 4.Qingdao AVIC Engn Testing Co Ltd, Qingdao 266033, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Junhao,Shang, Huaishuai,Chen, Yu,et al. Study on bond properties of corroded NPR (negative Poisson's ratio) steel bar embedded in marine concrete[J]. STRUCTURES,2023,57:12.
APA	Zhou, Junhao,Shang, Huaishuai,Chen, Yu,Fan, Liang,Li, Yongsheng,&Liu, Hao.(2023).Study on bond properties of corroded NPR (negative Poisson's ratio) steel bar embedded in marine concrete.STRUCTURES,57,12.
MLA	Zhou, Junhao,et al."Study on bond properties of corroded NPR (negative Poisson's ratio) steel bar embedded in marine concrete".STRUCTURES 57(2023):12.