G-900 environmentally friendly corrosion inhibitor I. Introduction: t concrete corrosion inhibitor, rust inhibitor is complex. With less water, rust and other functions, and its main function is to inhibit, prevent or delay the process of electrochemical corrosion of reinforcing steel, postpone "salt damage" occurs and slows its pace of development. Use rust inhibitor in reinforced concrete can improve its durability, so as to prolong the life of purpose structures in chloride environment, extend the structure about three times the corrosion cycle. Our survey showed that industrial buildings, generally less than the design life requirements of life, usually reinforced concrete industrial plants, with an average of about 20 years showed significant steel corrosion damage and corrosion, plant in 5 to 10 years can be severe corrosion destruction, it takes a lot of money to repair. Japan, the U.S. and other countries as early as the 70s of the last century had begun legislative applications. Promoting the application of rust inhibitor, in environmental protection, resource conservation, social and economic aspects are very important. Second, the scope: It can be widely used in a variety of reinforced concrete structures, especially in the coastal city structures reinforced concrete, marine engineering, the use of de-icing salt concrete pavement engineering, the use of sea sand concrete projects. Third, the technical indicators: (Executive Standard: YB/T9231-2009) Inspection Item Specification test results of individual judgment steel rods salt water immersion test potential 0 ~ 250mv no rust, no corrosion potential of steel bars is -182 ~ 177mv qualified electrochemical Comprehensive Test current is less than 150μA current 74μA qualified clotting time difference -120 to +120 +30 min initial setting passing final setting -120 to +120 +25 compressive strength ratio (by test specimen and the reference specimen ratio%) 7d ≥ 90 115 Qualified 28d ≥ 90 109 Fourth, content and technology Description: Volume: 5% (cement amount). Fifth, packaging and storage of product powder 25 kg / bag, construction temperature -5 ℃ ~ 40 ℃, should be stored in a dry, cool place, shelf life of 12 months.