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author:

Zhang, Xiaochen (Zhang, Xiaochen.) [1] | Wu, Xiangguo (Wu, Xiangguo.) [2] | Zhang, Xuesen (Zhang, Xuesen.) [3] | Wang, Long (Wang, Long.) [4] | Tang, Yunchao (Tang, Yunchao.) [5] | Qiu, Faqiang (Qiu, Faqiang.) [6]

Indexed by:

EI Scopus SCIE

Abstract:

The ductility of reinforced concrete structures is often determined by the ductility of post-yield deformed rebar. However, to date, few studies have been conducted on the bond behavior of post-yield deformed rebars embedded in ultra-high performance concrete (UHPC). Therefore, a pull-out test was conducted to investigate the effects of the cover, embedded length, and steel fiber on the bond behaviors between UHPC, and pre-and post-yield deformed rebars. The test results showed that a 50% increase in the bond strength could be obtained when the cover was increased from 1d to 2d, where d is the diameter of the deformed rebar. As the anchorage length was increased from 2.5d to 5d, the bond strength decreased by approximately 50%. Meanwhile, the bond strength increased by 126% with an increase in steel fiber content from 0 to 2%. To predict the bond strength of the pre-and post-yield deformed rebar embedded in UHPC, a modified thick-walled cylinder model was pro-posed. Subsequently, the distribution of the bond stress along the embedded length was revealed, and the po-sition function was provided. Finally, the bond stress-slip model including the anchorage position function provides an insight into the bond stress between UHPC and deformed rebars.

Keyword:

Bond behaviors Bond strength model Bond stress distribution Deformed rebar Ultra -high performance concrete

Community:

  • [ 1 ] [Zhang, Xiaochen]Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
  • [ 2 ] [Wang, Long]Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
  • [ 3 ] [Wu, Xiangguo]Fuzhou Univ, Coll Civil Engn, Fuzhou 350108, Peoples R China
  • [ 4 ] [Wu, Xiangguo]Harbin Inst Technol, Minist Educ, Key Lab Struct Dynam Behav & Control, Harbin 150090, Peoples R China
  • [ 5 ] [Wu, Xiangguo]CGN New Holdings Co Ltd, Beijing 100070, Peoples R China
  • [ 6 ] [Tang, Yunchao]Zhongkai Univ Agr & Engn, Coll Urban & Rural Construct, Guangzhou 510225, Peoples R China
  • [ 7 ] [Tang, Yunchao]Guangxi Univ, Sch Civil Engn & Architecture, Guangxi Key Lab Disaster Prevent & Engn Safety, Nanning 530004, Peoples R China
  • [ 8 ] [Tang, Yunchao]JianYan Test Grp Co Ltd, Xiamen 361004, Peoples R China

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Source :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

Year: 2022

Volume: 341

7 . 4

JCR@2022

7 . 4 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:91

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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