不同腐蚀形态不锈钢-碳钢复合钢筋力学性能

华建民; 胡国松; 王斐; 薛暄译; 王能

doi:10.13204/j.gyjzG22112002

不同腐蚀形态不锈钢-碳钢复合钢筋力学性能

doi: 10.13204/j.gyjzG22112002

华建民^1,2,
胡国松¹,
王斐^1, ,,
薛暄译^1,2,
王能³

1. 重庆大学土木工程学院, 重庆 400045;
2. 重庆大学山地城镇建设与新技术教育部重点实验室, 重庆 400045;
3. 重庆大学管理科学与房地产学院, 重庆 400045

基金项目:

国家自然科学基金青年科学基金项目(52108115)。

详细信息

作者简介:
华建民,男,1974年出生,博士,教授,hjm191@163.com。

通讯作者:
王斐,女,1997年出生,博士研究生,feiwang_cqu@163.com。

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出版历程
- 收稿日期: 2022-11-20

Mechanical Properties of Stainless-Clad Bimetallic Steel Bars with Different Corrosion Forms

HUA Jianmin^1,2,
HU Guosong¹,
WANG Fei^{1
, ,},
XUE Xuanyi^1,2,
WANG Neng³

1. School of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing 400045, China;
3. School of Management Science and Real Estate, Chongqing University, Chongqing 400045, China

摘要

摘要: 不锈钢-碳钢复合钢筋是一种由碳钢芯筋和不锈钢覆层组成的新型耐腐蚀钢筋。通过热轧等工艺实现两者的冶金结合,使其兼有芯筋的强度和覆层的耐腐蚀性能,在实际工程中有广阔的应用前景。以S30408不锈钢-HRB400碳钢复合钢筋为研究对象,根据钢筋真实服役状态设计了均匀腐蚀、覆层破损腐蚀和非均匀腐蚀三种腐蚀类型。通过电流加速腐蚀试验得到了三种腐蚀形态的不锈钢-碳钢复合钢筋试样,并对以上试样进行单调拉伸试验。研究表明:腐蚀导致不锈钢-碳钢复合钢筋力学性能呈线性下降。腐蚀后试件的应力-应变曲线形态也发生改变。其中,覆层破损腐蚀试样的屈服平台消失最早发生。通过预测模型定量地描述了三种腐蚀形态的不锈钢-碳钢复合钢筋的力学性能和韧性的演化规律,并可以预测任一腐蚀程度下三种腐蚀形态的不锈钢-碳钢复合钢筋的力学性能和韧性。最后根据试验结果和GB/T 1499.2—2018的要求,建议不锈钢-碳钢复合钢筋的腐蚀程度限制在10.7%以内,以保证结构的服役性能。
- 不锈钢-碳钢复合钢筋 /
- 腐蚀形态 /
- 力学性能 /
- 韧性
Abstract: The stainless-clad bimetallic steel bar (SCBSB) is a new type of weather-resistant steel bar composed of carbon steel core bars and stainless-steel cladding. The metallurgical combination of the two is realized through hot rolling and other processes, so that it has both the strength of the core bar and the corrosion resistance of the cladding, which has broad prospects in practical engineering applications. Taking SCBSB which is consisted with the S304 stainless steel as the cladding and the HRB400 carbon steel bar as the substrate as the research object, according to the actual service state of reinforcement, three types of corrosion are designed, that’s, uniform corrosion, damaged cladding corrosion and non-uniform corrosion. Three types of corrosion forms of SCBSB samples were obtained by electrochemical accelerated corrosion test. Then the tensile test was performed on the above samples. The research had shown that the mechanical properties of SCBSB decreased linearly due to corrosion. The characteristic of stress-strain curve also changed after three forms of corrosion, of which the disappearance of the yield platform of the damaged cladding corrosion sample occurred first. The evolution law of mechanical properties and toughness of SCBSB with three corrosion forms was quantitatively described by prediction models, which could predict the mechanical properties and toughness of SCBSB with three corrosion forms at any degree of corrosion. Finally, according to the test results and the requirements of GB/T 1499.2—2018, the paper suggested that the corrosion degree of SCBSB should be controlled below 10.7% to ensure the service performance of the structure.
- stainless-clad bimetallic steel bars /
- corrosion form /
- mechanical properties /
- toughness

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参考文献(23)

[1]	金伟良,钟小平.结构全寿命的耐久性与安全性、适用性的关系[J].建筑结构学报,2009,30(6):1-7.
[2]	钟小平,金伟良.钢筋混凝土结构基于耐久性的可靠度设计方法[J].土木工程学报,2016,49(5):31-39.
[3]	XUN W, YE D H, et al. Corrosion characteristics of S23043 duplex stainless steel bars [J]. Construction and Building Materials,2018(178):135-143.
[4]	冯光岩,金祖权,熊传胜,等.海洋潮汐区暴露700 d带裂缝混凝土中耐蚀钢筋的锈蚀行为[J].材料导报,2020,34(8):8064-8070.
[5]	陆春华,赵羽习,金伟良.锈蚀钢筋混凝土保护层锈胀开裂时间的预测模型 [J].建筑结构学报,2010,31(2):85-92.
[6]	付传清,何家豪,金贤玉,等.带横向荷载裂缝钢筋混凝土梁的钢筋锈蚀形态研究[J].建筑结构学报,2019,40(1):123-131.
[7]	MOHAMED A R, HILAL E H, TAMER E M,et al. Durability of basalt FRP reinforcing bars in alkaline solution and moist concrete environments [J/OL].Construction and Building Materials,2020(243)[2022-11-20].https://doi.org/10.1016/j.conbuildmat.2020.118258.
[8]	顾兴宇, 沈新, 李海涛. 高模量玄武岩纤维-钢丝复合筋的力学性能[J]. 长沙理工大学学报(自然科学版),2010, 7(3): 19-24.
[9]	董志强,吴刚.FRP筋增强混凝土结构耐久性能研究进展[J].土木工程学报,2019,52(10):1-19 ,29.
[10]	CHEN Y, DAVALOS J F, RAY I, et al. Accelerated aging tests for evaluations of durability performance of FRP reinforcing bars for concrete structures [J]. Composite Structures, 2007, 78(1): 101-111.
[11]	ZHOU Z D, QIAO P Z. Bond behavior of epoxy-coated rebar in ultra-high performance concrete [J]. Construction and Building Materials, 2018,182:406-417.
[12]	董伟. 环氧涂层钢筋在海工混凝土结构中的腐蚀行为研究[D].西安:长安大学,2019.
[13]	吕钊,李伟华,宗成中.海洋环境下混凝土桥梁涂层防护技术的研究与进展[J].公路交通科技,2010(增刊1):130-134.
[14]	JYOTI B,SAMANTHA L, et al.Accelerated pitting corrosion test of 304 stainless steel using ASTM G48: experimental investigation and concomitant challenges [J].Journal of Loss Prevention in the Process Industries,2017(47):10-21.
[15]	向勇,黄玲,曾麟芳,等. 耐腐蚀不锈钢覆层钢筋的开发和应用前景[C]//第十一届中国钢铁年会论文集.北京:2017:141-146.
[16]	HUA J M, WANG F, HUANG L P, et al. Experimental study on mechanical properties of corroded stainless-clad bimetallic steel bars [J/OL]. Construction and Building Materials, 2021, 287[2022-11-20].https://doi.org/10.1016/j.conbuildmat.2021.123019.
[17]	HUA J M, WANG F, XIANG Y, et al. Mechanical properties of stainless-clad bimetallic steel bars exposed to elevated temperatures [J/OL]. Fire Safety Journal, 2022. 127[2022-11-20].https://doi.org/10.1016/j.firesaf.2021.103521.
[18]	华建民, 王斐, 薛暄译,等. 高温后不锈钢-碳钢复合钢筋低周疲劳性能[J]. 哈尔滨工业大学学报, 2022, 54(4):150-160.
[19]	YUAN Y S, JI Y. Modeling corroded section configuration of steel bar in concrete structure [J].Construction and Building Materials, 2009,23(6):2461-2466.
[20]	中华人民共和国住房和城乡建设部.普通混凝土长期性能和耐久性能试验方法标准:GB/T 50082—2009[S]. 北京:中国建筑工业出版社,2009.
[21]	中华人民共和国国家质量监督检验检疫总局.金属材料拉伸试验第1部分:室温试验方法: GB/T 228.1—2010[S].北京:中国标准出版社,2010.
[22]	中华人民共和国国家质量监督检验检疫总局.钢筋混凝土用钢第2部分:热轧带肋钢筋: GB/T 1499.2—2018[S].北京: 中国标准出版社,2018.
[23]	TANG F J, LIN Z B, et al.Three-dimensional corrosion pit measurement and statistical mechanical degradation analysis of deformed steel bars subjected to accelerated corrosion [J].Construction and Building Materials, 2014,70:104-117.