钢筋锈蚀是影响钢筋混凝土结构耐久性的最主要因素,应当采取积极有效的防护措施改善混凝土中的钢筋锈蚀问题。混凝土中引起钢筋锈蚀的氯离子主要源于外渗和内掺两种方式,各有不同的腐蚀机理。本文分析了钢筋混凝土的腐蚀原因,并提出相应的防护措施,保证混凝土结构的服役寿命。 Corrosion of steel bars is the most important factor affecting the durability of reinforced concrete structures. Active and effective protective measures should be taken to improve the corrosion of steel bars in concrete. Chloride ions that cause corrosion of steel bars in concrete mainly come from the two modes of extravasation and internal doping, each with different corrosion mechanisms. This paper analyzes the corrosion of reinforced concrete, and put forward the corresponding protective measures to ensure the service life of concrete structures.