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Author:

Zhang, J. (Zhang, J..) | Zhong, B. (Zhong, B..) | Zhao, D. (Zhao, D..) | Dong, H. (Dong, H..)

Indexed by:

EI Scopus SCIE

Abstract:

Although recycled aggregate concrete (RAC) has been used in structural engineering, the application of brick-concrete recycled aggregate concrete (BCRC) in structural engineering remains limited. Bond-slip behavior is critical for the co-work between concrete and reinforcement bars. This study investigated the bond-slip behavior between BCRC and reinforcement bars through 45 pull-out tests. The variables studied include concrete type (natural aggregate concrete (NAC) and BCRC), recycled brick aggregate (RBA) replacement ratio (0 %, 25 %, and 50 %), concrete cylinder compressive strength (30 MPa and 40 MPa), concrete cover thickness (30 mm, 50 mm, and 68 mm), reinforcement diameter (8 mm, 14 mm, and 20 mm), bond length (5 d, 10 d, 15 d, and 20 d), stirrup ratio (0.5 %, 0.7 %, and 1.0 %), and reinforcement shape (deformed and plain). The results show that compared with NAC, the normalized ultimate bond strength of BCRC with RBA replacement ratios of 0 %, 25 %, and 50 % increased by 7.5 %, 3.6 %, and 19.2 %, respectively. As the cylinder compressive strength of BCRC increased from 30 MPa to 40 MPa, the ultimate bond strength increased by 24.5 %, and the ultimate slip decreased by 20.0 %. Based on the test data, a bond stress-slip model for BCRC was proposed, demonstrating high accuracy. The models proposed in this paper can provide a reference for the engineering structural design of BCRC. © 2024 Elsevier Ltd

Keyword:

Bond stress-slip model Hot-rolled ribbed bar Reinforced concrete Pull-out test Brick-concrete recycled aggregate

Author Community:

  • [ 1 ] [Zhang J.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 2 ] [Zhong B.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 3 ] [Zhao D.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 4 ] [Dong H.]Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing University of Technology, Beijing, China

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Source :

Construction and Building Materials

ISSN: 0950-0618

Year: 2024

Volume: 436

7 . 4 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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