[1]刘昱清,董鹏,滕晓娟,等.基于X-ray uCT技术的钢筋锈胀特征分析[J].深圳大学学报理工版,2017,34(No.6(551-660)):583-588.
 Liu Yuqing,Dong Peng,Teng Xiaojuan,et al.Characterization of corrosion expansion feature of steel bar by means of X-ray μCT[J].Journal of Shenzhen University Science and Engineering,2017,34(No.6(551-660)):583-588.
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基于X-ray uCT技术的钢筋锈胀特征分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第34卷
期数:
2017年No.6(551-660)
页码:
583-588
栏目:
土木建筑工程
出版日期:
2017-11-30

文章信息/Info

Title:
Characterization of corrosion expansion feature of steel bar by means of X-ray μCT
作者:
刘昱清12董鹏2滕晓娟2贺林龙2洪舒贤2董必钦2邢锋12
1)中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨 150080; 2)深圳大学土木工程学院,广东省滨海土木工程耐久性重点实验室,广东深圳 518060
Author(s):
Liu Yuqing12 Dong Peng2 Teng Xiaojuan2 He Linlong2 Hong Shuxian2 Dong Biqin2 and Xing Feng12
1) Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin150080, Heilongjiang Province, P.R.China 2) School of Civil Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen518060, Guangdong Province, P.R China
关键词:
建筑材料混凝土钢筋腐蚀膨胀系数时变X射线层析成像
Keywords:
building materials concrete reinforcement corrosion expansion coefficient time variation X-ray computer microtomography
文献标志码:
A
摘要:
在传统的锈胀解析模型计算中,无法实现对膨胀系数进行时变假设. 利用X-ray μCT(X射线微观层析成像),对同一试块中钢筋腐蚀全过程进行追踪监测. 在现有研究基础上对钢筋腐蚀全过程的腐蚀膨胀系数时变规律进行了研究,实现了对腐蚀形貌的实时表征和对腐蚀产物体积、钢筋腐蚀体积的定量化计算. 结果表明:钢筋体积随着腐蚀过程呈下降趋势;腐蚀过程的膨胀系数逐渐增大,范围从1.98到5.87,曲线斜率与腐蚀物的体积变化率一致. 随着腐蚀的不断深化,腐蚀产物的组分也具有相应的时变性. 时变腐蚀膨胀系数呈现上升趋势,与腐蚀过程膨胀系数研究取值范围(2~6)相吻合.
Abstract:
In the traditional model of corrosion calculations, the time-dependent assumption of expansion coefficient cannot be realized. In this paper, we use X-ray computer microtomography (X-ray μCT) to trace the whole corrosion process of the specimen. Based on the existing research, the time-dependent feature of corrosion expansion coefficient is studied. The corresponding corrosion morphology is given and the volume of the corrosion product and the corrosion volume of the steel bar is calculated. The results show that the volume of the steel decreases with the corrosion process. The expansion coefficient in the corrosion process increases from 1.98 to 5.87, and the curve has the same trend with that of the volume changing rate. As the corrosion process continues, the components of the corrosion product also have the corresponding time variability. The time dependent corrosion expansion coefficient shows an increased trend, which is consistent with the value, which is between 2 and 6, of the expansion coefficient in corrosion process.

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更新日期/Last Update: 2017-10-10