reinforced concrete protective layer 钢筋的混凝土保护层
To evaluate the full-span durability life of reinforced concrete structure, the expanding process of corrosive crack in protective layer concrete is studied in this paper.
为了对钢筋混凝土结构的耐久性全寿命进行评估，研究了保护层混凝土锈胀裂缝的扩展及过程。
Secondly , protective layer thickness is too thin to protect concrete reinforced bar and reduce durability.
保护层厚度不够导致钢筋外露引起锈蚀，降低了桥梁的耐久性；
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