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Open AccessArticle
Study on the Bond Performance of Epoxy Resin Concrete with Steel Reinforcement
by
Peiqi Chen
Peiqi Chen 1,2,
Yueqiang Li
Yueqiang Li 1,2,
Xiaojie Zhou
Xiaojie Zhou
Prof. Dr. Xiaojie Zhou has been a Professor at the College of Civil Engineering, Tianjin
Chengjian [...]
Prof. Dr. Xiaojie Zhou has been a Professor at the College of Civil Engineering, Tianjin
Chengjian University since 2010. Before that, she worked at the university
starting in 1994. She worked as an assistant from 1994 to 1999, as a lecturer from
1999 to 2007, and as an Associate Professor for twelve years. She received a Master's degree
from 1998 to 2002 and a PhD from 2009 to 2015, majoring in Structural
Engineering. She is a member of the Tianjin Civil Engineering Society and has been
awarded the titles of Tianjin Teaching Master and Tianjin Excellent Teacher. She
has participated in leading scientific research projects, including research on
the seismic damage evolution mechanism and the design method of flexible connection
masonry filled wall frame structures; application research on the seismic
performance of fly ash self-insulated hollow block filled wall frame structures;
and research on the seismic performance of masonry infill walls in flexible
connection frame structures outside the plane. Her main research is directed toward the seismic resistance of engineering structures.
1,2,
Hao Wang
Hao Wang 1,2 and
Jie Li
Jie Li
Dr. Jie Li is an Associate Professor at the Tianjin Chengjian University. She has been a at Tianjin [...]
Dr. Jie Li is an Associate Professor at the Tianjin Chengjian University. She has been a postdoctoral
fellow at Tianjin University from 2021 to the present. She was selected as the
third-level candidate for the Tianjin "131" Innovative Talent Training Project. In addition, she
is a member of the Tianjin Seismological Society and a reviewer for journals
such as Advances in Structural Engineering and Structural Safety. She has led
and participated in many scientific research projects, such as the Numerical
Simulation Study on High-Performance Concrete Structures under Uncertain Close-Range
Explosion Action, the Seismic Performance Design of Steel-Tube High-Strength
Concrete Low-Yield Point Steel-Plate Shear Wall Structures, and the Strength
Prediction of Blast Resistance for High-Performance Fiber-Reinforced Concrete
Components. Her main research is directed toward stochastic finite element analysis,
component and structural strength prediction, and reliability calculation and analysis.
1,2,*
1
Tianjin Key Laboratory of Civil Buildings Protection and Reinforcement, Tianjin 300384, China
2
School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China
*
Author to whom correspondence should be addressed.
Buildings 2024, 14(9), 2905; https://doi.org/10.3390/buildings14092905 (registering DOI)
Submission received: 1 August 2024
/
Revised: 9 September 2024
/
Accepted: 10 September 2024
/
Published: 14 September 2024
Abstract
Abstract: Epoxy resin concrete, characterized by its superior mechanical properties, is frequently utilized for structural reinforcement and strengthening. However, its application in structural members remains limited. In this paper, the bond–slip behavior between steel reinforcement and epoxy resin concrete was investigated using a combination of experimental research and finite element analysis, with the objective of providing data support for substantiating the expanded use of epoxy resin concrete in structural members. The research methodology included 18 center-pullout tests and 14 finite element model calculations, focusing on the effects of variables such as epoxy resin concrete strength, steel reinforcement strength, steel reinforcement diameter and protective layer thickness on bond performance. The results reveal that the bond strength between epoxy resin concrete and steel reinforcement significantly surpasses that of ordinary concrete, being approximately 3.23 times higher given the equivalent strength level of the material; the improvement in the strength of both the epoxy resin concrete and steel reinforcement are observed to marginally increase the bond stress. Conversely, an increase in the diameter of the steel reinforcement and a reduction in the thickness of the protective layer of the concrete can lead to diminished bond stress and peak slip. Particularly, when the steel reinforcement strength is below 500 MPa, it tends to reach its yield strength and may even detach during the drawing process, indicating that the yielding of the steel reinforcement occurs before the loss of bond stress. In contrast, for a steel reinforcement strength exceeding 500 MPa, yielding does not precede bond stress loss, resulting in a distinct form of failure described as scraping plough type destruction. Compared to ordinary concrete, the peak of the epoxy resin concrete and steel reinforcement bond stress–slip curve is more pointed, indicating a rapid degradation to maximum bond stress and exhibiting a brittle nature. Overall, these peaks are sharper than those of ordinary concrete, indicating a rapid decline in bond stress post-peak, reflective of its brittle characteristics.
Share and Cite
MDPI and ACS Style
Chen, P.; Li, Y.; Zhou, X.; Wang, H.; Li, J.
Study on the Bond Performance of Epoxy Resin Concrete with Steel Reinforcement. Buildings 2024, 14, 2905.
https://doi.org/10.3390/buildings14092905
AMA Style
Chen P, Li Y, Zhou X, Wang H, Li J.
Study on the Bond Performance of Epoxy Resin Concrete with Steel Reinforcement. Buildings. 2024; 14(9):2905.
https://doi.org/10.3390/buildings14092905
Chicago/Turabian Style
Chen, Peiqi, Yueqiang Li, Xiaojie Zhou, Hao Wang, and Jie Li.
2024. "Study on the Bond Performance of Epoxy Resin Concrete with Steel Reinforcement" Buildings 14, no. 9: 2905.
https://doi.org/10.3390/buildings14092905
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