On the basis of the following measures, the external protection of severely corroded parts and special parts is carried out with high structural durability.

　　1. 环氧涂层钢筋

　　1. Epoxy coated reinforcement

　　在锈蚀更严重的现浇墩中，采用环级配筋。

　　In the most seriously corroded cast-in-place pier, ring graded reinforcement is used.

　　涂层在施工中容易变形是一个缺点。环氧树脂钢筋的保护机制是建立在完全隔离胸腔和腐烂的基础上的在腐蚀介质基体上，环氧涂层的缺陷和接触层的铸态损伤容易导致弹性杆件的点状腐蚀。相应的行动。建设中维护薄膜的完整性是环氧涂层钢筋有效性的关键。

　　The coating is easy to deform in construction. The protection mechanism of epoxy reinforcement is based on the complete isolation of the chest and the rotten, and the defects of the epoxy coating and the as cast damage of the contact layer are easy to lead to the pitting corrosion of the elastic members. Corresponding actions. Maintaining the integrity of the membrane is the key to the effectiveness of epoxy coated steel bars.

　　根据桥梁规范，每米涂敷钢筋的涂敷量不得超过25mm。

　　In accordance with the bridge specification, the amount of reinforcement to be coated per meter shall not exceed 25 mm.

　　2.总面积不得超过钢筋表面积的0.1%。

　　2. The total area shall not exceed 0.1% of the reinforcement surface area.

　　制定环氧涂层钢筋的储存、运输、加工、安装等方面的详细规定和规章制度，采取必要的措施，尽量减少对环氧涂层的损坏。破环试涂应尽快修复。修复用环试涂应使用钢筋制造商提供的材料应在相对湿度小于85%的环境中进行。修复涂层的厚度不得小于180um。据美国媒体报道。混凝土浇筑、振动过程中可能会对胶环软涂层的钢材产生影响(共80%的损伤率发生在这里)

　　Formulate detailed regulations and rules and regulations on storage, transportation, processing and installation of epoxy coated reinforcement, and take necessary measures to minimize damage to epoxy coating. The damaged ring test coating shall be repaired as soon as possible. The ring test coating for repair shall be carried out in the environment with the relative humidity less than 85% using the materials provided by the reinforcement manufacturer. The thickness of repair coating shall not be less than 180um. According to American media. During the process of concrete pouring and vibration, it may affect the steel with soft coating of rubber ring (80% of the damage rate occurs here)

　　因此，在施工过程中，应在金属振捣器上涂上塑料或橡胶，并使岛群与钢筋直接接触，以减少准直损伤涂层。

　　Therefore, in the construction process, the metal vibrator should be coated with plastic or rubber, and the island group should be in direct contact with the reinforcement to reduce the collimation damage coating.

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　　The above is the relevant content introduced by Shandong cable tray manufacturer. For more information, please visit the website: http://www.sdhangfeng.com