| 刘克,张杰,李焰,于丰铠.钢筋混凝土实际海洋环境下的腐蚀[J].装备环境工程,2020,17(4):96-104. LIU Ke,ZHANG Jie,LI Yan,YU Feng-kai.Corrosion of Reinforced Concrete in Marine Environment[J].Equipment Environmental Engineering,2020,17(4):96-104. |
| 钢筋混凝土实际海洋环境下的腐蚀 |
| Corrosion of Reinforced Concrete in Marine Environment |
| 投稿时间：2019-04-10 修订日期：2019-05-05 |
| DOI：10.7643/issn.1672-9242.2020.04.016 |
| 中文关键词: 钢筋混凝土 生物腐蚀 氯离子 局部腐蚀 |
| 英文关键词:reinforced concrete biological corrosion chloride ion local corrosion |
| 基金项目:国家自然科学基金(41376003、41006054)；中国科学院战略性先导科技专项(A类)(XDA13040405) |
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| Author | Institution |
| LIU Ke | Key Laboratory of Marine Environment Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;School of Material Science and Engineering, China University of Petroleum, Qingdao 266580, China |
| ZHANG Jie | Key Laboratory of Marine Environment Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China |
| LI Yan | School of Material Science and Engineering, China University of Petroleum, Qingdao 266580, China |
| YU Feng-kai | Key Laboratory of Marine Environment Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Open Studio for Marine Corrosion and Protection, Pilot Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China |
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| 中文摘要: |
| 目的 研究钢筋混凝土在实际海洋环境中的腐蚀行为。方法 记录浸泡在青岛水域1 a时间内钢筋混凝土表面生物的附着情况，并通过XRD等测试手段分析海洋环境中的污损生物对混凝土基体表面组分腐蚀行为的影响。通过测试氯离子含量，监测钢筋在实际海洋环境下的临界氯离子含量，同时通过动电位极化，比较钢筋在海水中腐蚀1 a的点蚀电位和极化电阻等电化学参数，通过SEM观察钢筋表面腐蚀形貌，监测钢筋的腐蚀情况。结果 海洋污损生物导致重金属元素在混凝土表层富集，钢筋混凝土在实际海洋环境下的临界氯离子含量为0.375%，钢筋混凝土在实际海洋环境下180 d钝化状态消失，产生局部腐蚀。结论 海水中的生物主要是对混凝土表层的物质产生了影响，但并未对钢筋的腐蚀产生影响。导致钢筋产生腐蚀的主要因素在于氯离子的渗透。 |
| 英文摘要: |
| The paper aims to research the corrosion behavior of reinforced concrete in real marine environment. In this paper, the attachment of organisms on the surface of reinforced concrete immersed in seawater of Qingdao for one year was recorded, and the influences of fouling organism in marine environment on corrosion of the concrete matrix were tested and analyzed by means of XRD, etc. The critical chloride ion content of rebar in marine environment was monitored by measuring the chloride ion content. Simultaneously, the electrochemical parameters such as pitting potential and polarization resistance of steel bar immersed in seawater for one year was tested by potentiodynamic polarization. The corrosion morphology of rebar was observed by SEM to monitor the corrosion of the rebar. Marine fouling organisms resulted in the enrichment of heavy metal elements; the critical chloride ion content of reinforced concrete in the actual marine environment was 0.375%; the passivation state of reinforced concrete disappeared in the actual marine environment for 180 days, resulting in local corrosion. The organisms in seawater mainly affect the surface material of concrete, but have no effect on the corrosion of rebar. The main reason for the corrosion of rebar is the penetration of chloride ions. |
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