锈蚀钢筋混凝土粘结滑移性能综述

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Abstract Based on a large number of studies at home and abroad, this paper summarizes the bond performance between corroded steel bars and concrete from three aspects: the experimental method of steel corrosion, the bond strength of corroded steel bars and the bond stress slip constitutive relationship of corroded steel bars. First of all, the advantages and disadvantages of natural corrosion, artificial climate simulation and electrified accelerated corrosion test are analyzed. In the aspect of bond strength of corroded steel bars, the factors influencing bond strength of corroded steel bars are summarized, and the degradation models of bond strength at home and abroad are described in detail. In the aspect of bond stress-slip constitutive model of corroded steel bars, the bond slip constitutive model of corroded steel bars is elaborated from two aspects of monotonic and cyclic reverse load. It should be pointed out that there are a lot of researches on bond stress-slip constitutive model of corroded steel bars based on monotonic load at present, but there are relatively few researches under cyclic reverse load. At last, the shortcomings and research trends of this research direction are analyzed. It is pointed out that the prediction model of bond force based on the width of rust expansion crack is more practical, but the related model research is less. The existing research is mostly based on the pull-out specimen with strong external constraints, the failure mode is pull-out failure, and the research of bond performance under the split failure mode is less, but the actual situation is less Cleavage is the most common failure mode in engineering, so the bond performance under Cleavage mode should be the research focus.

Key words： corrosion test method bond strength constitutive relation monotonic load reciprocating load

Published: 08 January 2021

CLC number:

TU528

Fund:This work was financially supported by the National Key R&D Program of China (2019YFC1509302), the Natural Science Foundation of China (51678475), Science and Technology Plan Project of Xi'an, China (2019113813CXSF016SF026), Education Department Industrialization Project of Shaanxi Province, China (18JC020).

About author:: Shansuo Zheng, professor and doctoral supervisor of School of Civil Engineering, Xi'an University of Architecture and Technology. In July 1983, he graduated from the former Xi'an Institute of Metallurgical Architecture with a bachelor's degree in industrial and civil architecture; in December 1990, he graduated from the university with a master's degree in structural enginee-ring; in June 2000, he graduated from Xi'an University of Building Science and Technology with a doctor's degree in structural engineering; from October 2000 to February 2003, he worked in the post doctoral station of engineering mechanics of Xi'an Jiaotong University. Mainly engaged in steel and concrete composite structure, concrete structure, steel structure, steel structure and its earthquake resistance, building (structure) structure reliability evaluation, earthquake damage prediction and other research work. There are 9 first and second prizes in science and technology at provincial and ministerial level, 48 national invention patents, 30 national software copyrights, 357 academic papers (214 of which are included in SCI and EI), 14 books edited, 1 national specification participated and 1 enterprise standard formulated.Jianjun Yang graduated from Panzhihua University with a bachelor's degree in civil engineering in July 2018. At present, he is a master's degree student in the School of Civil Engineering, Xi'an University of Architecture and Technology, under the guidance of Professor Zheng Shansuo. At present, the main research field is the earthquake resistance of engineering structures.

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Cite this article:

ZHENG Shansuo,YANG Jianjun,ZHENG Yue, et al. Review of Research on Bond-Slip of Corroded Reinforced Concrete[J]. Materials Reports, 2020, 34(Z2): 221-226.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2020/V34/IZ2/221

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