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主管单位 中华人民共和国
工业和信息化部
主办单位 中国材料研究学会
哈尔滨工业大学
主编 苑世剑 国际刊号ISSN 1005-0299 国内刊号CN 23-1345/TB

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引用本文:乔宏霞,巩位,高升,陈广峰,程千元.镁水泥混凝土中钢筋的电化学腐蚀研究[J].材料科学与工艺,2016,24(1):63-69.DOI:10.11951/j.issn.1005-0299.20160110.
QIAO Hongxia,GONG Wei,GAO Sheng,CHEN Guangfeng,CHENG Qianyuan.Electrochemical corrosion of steel bar in the magnesium cement concrete[J].Materials Science and Technology,2016,24(1):63-69.DOI:10.11951/j.issn.1005-0299.20160110.
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镁水泥混凝土中钢筋的电化学腐蚀研究
乔宏霞1,2,巩位1,高升3,陈广峰4,程千元1
(1.甘肃省土木工程防灾减灾重点实验室(兰州理工大学),兰州 730050;2.盐湖资源与化学重点实验室 (中国科学院青海盐湖研究所),西宁 810008;3. 中铁第一勘察设计院集团有限公司, 西安 710043;4.北京大学 地球与空间科学学院,北京 100871)
摘要:
为解决分布在西部盐湖地区出现的煤矿矿区钢材腐蚀问题,结合煤矿矿区实际环境,采用实验、理论分析等方法研究了镁水泥混凝土中钢筋的腐蚀.采用CS350电化学工作站,研究镁水泥混凝土中钢筋的电化学腐蚀,结合SEM微观实验和EDS元素扫描结果,对镁水泥混凝土中裸露钢筋腐蚀状况进行描述.研究表明:美加力涂层钢筋状态良好,未出现腐蚀状态;锌美特涂层钢筋出现了低腐蚀现象;而裸露钢筋表面出现了严重腐蚀.钢筋涂层防腐蚀性美加力涂层较好,锌美特涂层次之;涂层钢筋虽然防腐效果不同,但对裸露钢筋的防腐蚀性能有明显有利影响.
关键词:  镁水泥混凝土  涂层  钢筋  电化学腐蚀  极化曲线  交流阻抗
DOI:10.11951/j.issn.1005-0299.20160110
分类号:TU503
文献标识码:A
基金项目:国家自然科学基金项目(1,9);甘肃省自然科学基金资助项目(1310RJZA051).
Electrochemical corrosion of steel bar in the magnesium cement concrete
QIAO Hongxia1,2, GONG Wei1, GAO Sheng3, CHEN Guangfeng4, CHENG Qianyuan1
(1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province(Lanzhou University of Technology), Lanzhou 730050, China; 2.Key Laboratory of Salt Lake Resources and Chemistry(Qinghai Institute of Salt Lakes, Chinese Academy of Sciences), Xinning 810008, China; 3.China Railway First Survey & Design Institute Group LTD, Xi′an 710043, China; 4.School of Earth and Space Sciences, Peking University, Beijing 1000871, China)
Abstract:
In order to solve reinforced corrosion on coal mine area in the salt lake of the west, in combination with the practical environment of coal mine area, experiment and theory analysis methods were used to study the reinforced corrosion in magnesium cement concrete. By CS350 electrochemical workstation, a study on the electrochemical corrosion of reinforced in magnesium cement concrete was carried out. Combined with the SEM and EDS, status of bare reinforced corrosion in magnesium cement concrete was described. Results showed that state of steel bar with MAGNI coating was better, and did not produce corrosion; steel bar with ZINTEK coating resulted in phenomena of low corrosion; the corrosion of bare steel bar on surface was serious. The order from high to low anticorrosion performance of the coating is from MAGNI to ZINTEK coating. Anticorrosive effects of coating on steel bar are in very different level, but the coating positively affects anticorrosion performance of the steel bar.
Key words:  magnesium cement concrete  coating  steel bar  electrochemical corrosion  polarization curve  AC impedance

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