沿海混凝土桥梁的腐蚀与防护

Corrosion and Protection of Coastal Concrete Bridges

沿海钢筋混凝土与预应力混凝土桥梁易受渗入到钢筋表面的氯盐腐蚀 ,影响结构的耐久性。为了提高耐久性 ,针对混凝土桥梁阐述了在设计和施工中亟宜采用的防氯盐腐蚀的基本措施 ,以及在恶劣环境下的重要工程所宜采用的特殊防护措施。实践表明 ,采取这些措施能有效地延长结构的使用寿命 。

The coastal reinforced or prestressed concrete bridges are always liable to chloride corrosion permeating on the reinforcement therein and durability of the structures is thus degraded. To improve the durability, essential measures against the corrosion that are suitably adopted in design and construction of the concrete bridges, and special measures suitable for use on important structures in vile environment are described. Practice proves that all these measures can effectively and significantly extend the service life of the structures.