Concrete sulfate-resistant corrosion inhibitor is an additive added during concrete mixing to resist the侵蚀 effects of sulfate and saline corrosive substances, enhancing the durability of concrete. It is known as concrete sulfate-resistant corrosion inhibitor. Abbreviated as sulfate-resistant additive, the execution standards are:JC/T1011-2016；1Adding a certain amount of sulfate-resistant corrosion inhibitor to silicate cement mortar or concrete can resist a certain concentration of SO2-4 in the environment.、Cl－、HCO-3、CO2、NH-4、Mg2+And erosion of mortars or concretes by other saline, pantothenic, groundwater, surface water, seawater, wastewater, saline soils, soluble rock salts, and other erosive substances.

Two: Dosage: By the weight of the binder6-8Section 3: Anti-Sulfate Corrosion Inhibitors Sulfates and magnesium salts in seawater or saline-alkaline environments can chemically erode and destroy cement concrete. Additionally, salts and sulfates can corrode and damage the steel reinforcement in concrete. Therefore, anti-corrosion measures are taken for concrete structures. KFS-1Type Concrete Antirust Agent is a admixture compounded of surface agent, inorganic salt, additive, and carrier. It is mixed with KFS-1 simultaneously in ordinary silicate cement.Type II Corrosion Inhibitor and Grade II Fly Ash, enhancing the sulfate resistance limit concentration (K) of cement.Value increased to 10,000～15000mg/lHigher by 4 than ordinary sulfate resisting cement～6The corrosion inhibitor also prevents the rusting of steel bars, exhibits frost-thaw resistance, enhances impermeability, and increases strength, making it suitable for the construction of concrete that withstands moderate to strong sulfate侵蚀 in coastal, port, and saline-alkaline areas.

[[Application Examples] 1

Corrosion inhibitor application in sulfuric acid electrolytic copper plant

Sulfuric acid vapor and condensates can cause severe corrosion to the concrete structures in electrolytic copper plants, leading to corrosive spalling, peeling, reduced strength, and reinforcement rusting, significantly shortening the lifespan of the buildings. To address this issue, a design solution was adopted in a certain engineering project.42.5Common cement of strength grade and 32.5Strength grade slag cement mixed with KFS-1Corrosion inhibitor, formulated for corrosion-resistant concrete. Ordinary cement mixed with KFS-1 for beams, columns, crane beams, and precast roof slabs.Type anti-corrosion agent, dosage of 8% by weight of cement％～12％(Substitution Rate for CementDesigned for C30Concrete. Foundation pillars, first floor columns, elevation 8.1mUpper Section, High PoolResin protective layer for sulfuric acid liquid ponds)Ground and similar applications use slag cement, KFS-1The dosage of the type of anti-corrosion agent is 8% by weight of cement.％～12％(Cement Substitution RateDesigned for C20～C25Concrete. Total width of four electrolytic cell rows: 18m90mThe entire workshop is 100Multiple m15m in lengthThe project was completed and put into operation in 3...After the New Year, the concrete edges, surface, and flatness are as good as new, with no signs of corrosion.

1Design Basis

Based on the content of the eroding material and the engineering environment, in accordance with domestic and international standards, as well asISOStandard erosion substances and degree of erosion, based on the degree of erosion by sulfates and other salts, and pantothenic acid, determine the construction parts of the electrolytic copper plant as moderately acidic corrosion and severe corrosion, select 42.5Common cement with strength grade and 32.5Slag cement mixed with KFS-1 strength gradeType E corrosion-resistant anti-erosion agent, formulated for use with corrosion-resistant concrete.

2Engineering concrete

（1Test Design and Results: Utilizing 42.5Common Portland cement, strength grade 32.5slag cement mixed with grade of intensity 8％～12％KFS-1Type Erosion-Resistant Corrosion Inhibitor, Medium Sand, Aggregate Particle Size 20～40mmCustom-mixed concrete, designed strength grade C20、C25、C30The design requirements and concrete mix ratio and strength for different parts of the workshop are shown in Table 1.Ordinary concrete mixed with a slump control of 40.～60mmThe concrete has good workability, high strength, and the average strength exceeds 135% of the designed strength grade.％。