| Research on the Anticorrosion Coating Under the Paved Layer for Highway Steel Box Bridge Deck |
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| 作者姓名： | SHEN Cheng-jin MING Tu-zhang HU Guang-wei OU Xue-mei GEN Ou |
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| 作者单位： | [1]School of Material Science ＆ Engineering, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China [2]Jiangsu Provincial Communication Planning and Design Institute, Nanjing, Jiangsu 210005, China |
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| 摘 要： | The corrosion of the anticorrosion coating and the defects of the asphalt concrete paved layer have been investigated on long-span steel box bridge decks. The anticorrosion coating lies in the midclle of two entirely different materials： a highway steel box bridge deck and a paved layer, which is used as anticorrosion and waterproof coating for the steel bridge deck. For our study, electrochemical corrosion and pull strength experiments have been selected for the investigation of the corrosion properties of inorganic zinc rich coating, epoxy zinc rich coating and arc sprayed zinc coating. The adhesive strength between the coatings and the panel, and the effect of the coating corrosion on the shear properties of the paved layers including cast asphalt, thermal asphalt mortar, epoxy asphalt and modified asphalt con- crete have been investigated. The results show that the adhesive strength between the coatings and the bridge panel is controlled by the method of pre-processing rust removal. Coating by sandblasting has stronger adhesive strength than coating by shot peening. The results also reveal that shear strength of the paved layer is affected by the corrosion product of zinc coating. The arc sprayed zinc coating has stronger shear strength than zinc rich coatings.
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| 关 键 词： | 金属材料 钢 合金 防蚀性 电气化学 |
| 收稿时间： | 2006-03-03 |
| 修稿时间： | 2006-04-05 |
Research on the Anticorrosion Coating Under the Paved Layer for Highway Steel Box Bridge Deck |
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| SHEN Cheng-jin MING Tu-zhang HU Guang-wei OU Xue-mei GEN Ou.Research on the Anticorrosion Coating Under the Paved Layer for Highway Steel Box Bridge Deck[J].Journal of China University of Mining and Technology,2006,16(4):429-432. |
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| Authors: | SHEN Cheng-jin MING Tu-zhang HU Guang-wei OU Xue-mei GEN Ou |
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| Affiliation: | 1. Department of Engineering Mechanics, South China University of Technology, Guangzhou, Guangdong, PR China;2. The Peac Institute of Multiscale Sciences, Chengdu, Sichuan, PR China;3. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan, PR China;4. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, PR China;5. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, PR China |
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| Abstract: | The corrosion of the anticorrosion coating and the defects of the asphalt concrete paved layer have been investigated on long-span steel box bridge decks. The anticorrosion coating lies in the middle of two entirely different materials: a highway steel box bridge deck and a paved layer, which is used as anticorrosion and waterproof coating for the steel bridge deck. For our study, electrochemical corrosion and pull strength experiments have been selected for the investigation of the corrosion properties of inorganic zinc rich coating, epoxy zinc rich coating and arc sprayed zinc coating. The adhesive strength between the coatings and the panel, and the effect of the coating corrosion on the shear properties of the paved layers including cast asphalt, thermal asphalt mortar, epoxy asphalt and modified asphalt concrete have been investigated. The results show that the adhesive strength between the coatings and the bridge panel is controlled by the method of pre-processing rust removal. Coating by sandblasting has stronger adhesive strength than coating by shot peening. The results also reveal that shear strength of the paved layer is affected by the corrosion product of zinc coating. The arc sprayed zinc coating has stronger shear strength than zinc rich coalings. |
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| Keywords: | steel bridge deck zinc coatings asphalt concrete paved layer |
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