According to field structural testing and environmental analysis, the main factor, which causes reinforcement corrosion, is due to construction quality of concrete protection layer.

经现场结构检测与环境分析，发现混凝土保护层的施工质量及偏差是引起目前钢筋腐蚀的主要原因。

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The corrosion principle of anchor bolt was analyzed, and the engineering protection measures adopted in rock and soil reinforcement process for the anchor bolt were also discussed.

对锚杆锈蚀原理进行了分析，并探讨了锚杆在岩土加固过程中所采用的工程防护措施。

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Corrosion protection of steel reinforcement depends on density, quality and thickness of concrete cover (see 4.4) and cracking (see 7.3).

钢筋的防腐取决于的钢筋密度，质量和混凝土保护层的厚度(见4.4)以及裂缝(见7.3)。

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