Sodium Naphthalene Formaldehyde

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Sodium Naphthalene Formaldehyde: SNF-5 is a naphthalene based superplasticizer. This product is made by industrial Naphthalene, Beta-sulphonate, Formaldehyde and Alkali via sulphuration, hydrolyzation, condensation and neutralization reactions. It belongs to non-air-entraining superplasticizer. SNF-5 is non-poisonous, odorless, non-flammable and non-corrosive to steel bars. Homogeneity indexes: Testing Item Total Solid Fineness 0.315mm residue on sieve % PH Value Sodium Sulfate % Liquidity of Cement Paste mm Enterprise Standard ≥92 ≤5 7－9 ≤5.0 ≥240 Note: standard blend dosage: 0.75％ for powder (as cement amount) Performance indexes of concrete mixed with SNF-5: Inspection Items Inspection Criteria Actual Results First Grade Qualified Water Reducing Rate (%, >) 12 10 20 Ratio of Bleeding Rate(%,<) 90 95 15 Air content(%) ＜3.0 ＜4.0 2.0 Diffrence of Set Time (min) Intial －90～＋120 -55 Final -42 Ratio of compressive strength(%) 1d ＞140 ＞130 156 3d ＞130 ＞120 152 7d ＞125 ＞115 146 28d ＞120 ＞110 138 Ratio of Shrinkage (%) 90d ＜135 82 Steel-bar Corrosion None None

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Hangzhou Lans Concrete Admixture Inc

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