The cracks on concrete Bridges affect the structure durability, and they are also the index that determines the durability state of concrete structures.
混凝土梁体上的裂缝对结构耐久性是有影响的，它也是决定混凝土结构耐久性状态的一个指标。
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.
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。
Due to the neglect of the durability of concrete structures in construction periods, serious problems exist now in many reinforced concrete highway Bridges which are still in use.
由于建设时期对混凝土结构耐久性问题认识的不足，许多现役混凝土公路桥梁存在着严重的耐久性问题。
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