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13 RI-1系钢筋阻锈剂钢筋锈阻蚀是钢筋混凝土结构在使用中遭受破坏的一个最主要的原因。海洋和沿海地区,盐碱地和盐湖区的构筑物中钢筋受到以氯盐为主的腐蚀。冶金、化工、印染、纺织和食品加工等部门的构筑物还受到多种腐蚀性介质的侵蚀。PI-1系钢筋阻锈剂是一种混凝土外加剂,它掺入混凝土中(在腐蚀环境严重的条件下,用高浓度的阻锈剂预浸钢筋)使钢筋钝化,改善和提高了混凝土自身的防护能力,从而防止了钢筋锈蚀,大大延长了钢筋混凝土构筑物的使用年限。其作用机理在于,阻锈剂使钢筋表面形成完整致密的纯化膜,当钝化膜一旦受到局部破坏(如Cl~-、SO_4~(2-)等侵蚀纯化膜),阻锈剂也可使钝化膜及时自动修复,从
13 RI-1 Steel Rust Corrosion Rebar Corrosion resistance is one of the main causes of damage to reinforced concrete structures during use. In marine and coastal areas, rebars in structures on saline-alkaline and salt lake areas are subject to chloride-based corrosion. Structures in the metallurgical, chemical, printing, dyeing, textile, and food processing industries are also eroded by a variety of corrosive media. PI-1 steel corrosion inhibitor is a concrete admixture. It is incorporated into concrete (under high corrosive conditions, pre-impregnated with a high concentration of rust inhibitor) to passivate the steel, improving and improving the concrete. Its own protection capabilities prevent corrosion of steel bars and greatly extend the service life of reinforced concrete structures. The mechanism of action is that the rust inhibitor forms a complete and dense purification membrane on the surface of the steel bar. Once the passive membrane is subjected to local destruction (such as Cl~-, SO4~(2-), etc.), the corrosion inhibitor can also be used. Passivation film is automatically repaired in time from