Early strength superplasticizer early strength superplasticizer was synthesized by the chemical type of non-entraining superplasticizer. Chemical Name: naphthalene sulfonate formaldehyde condensate, it is for the cement particle dispersion has a strong effect on the state of preparation of the crowd of concrete and there was a strong, in-situ and precast concrete high-strength requirements, there is a good use of effects, fully enhance and improve various properties of concrete, cement for common good applicability. Can be used for roads, bridges, dams, ports, tunnels, power engineering and water conservancy facilities engineering, industrial and civil construction, prefabricated steam curing and nature conservation, etc. Homogeneity Item Index Item Index Appearance brown powder-like toner PH value 7-9 Moisture fineness ≤10% 0.315mm sieve residue ≤12% paste fluidity 210mm ≤30 seconds defoaming time the physical and mechanical properties of concrete experiments Item Factory Specifications national standard water rates (%) ≥15 ≥12 QINSHUI rate ratio (%) ≤40 ≤90 difference between gas content (%) ≤3.0 ≤3.0 setting time (min) Initial setting -60 to + 120 -90 to + 120 final setting compressive strength ratio (%) of not less than 1d 145 140 3d 140 130 7d 130 125 shrinkage ratio (%) 28d 120 120 28d ≤128 ≤135 no corrosion of steel corrosion effects should no description of the steel 1. corrosion of technical performance cementitious material content is 0.5-1.5%, the amount of water reduction rate of 12-28%, early strength, enhance the role of clear, concrete strength increased by 60-130%, 3 days, 7 days strength can be increase 40-60%, 28 days strength can be increased by 20-40%, the late strength is still improved. 2. Keep the same concrete strength and slump comparable concrete without superplasticizer cement savings of 15-20%. 3. The incorporation of this product can greatly improve the workability of concrete, providing the mechanical properties of concrete, so that compressive, tensile strength, flexural strength, elastic modulus, and late strength of concrete has increased accordingly. 4. This product has a good variety of cement applicability. Such as: Portland cement, ordinary portland cement, slag cement, pozzolan cement. 5. Use in high-strength concrete, flowing concrete, early strength concrete, steam curing concrete precast, prestressed concrete. 6. This product has powder and liquid, liquid solids content of 40 ± 2%, density ≥1.22g / ml, dosage of 1.5-30%, other performance indicators unchanged. 7. FDA as a masterbatch with other components of composite additives formulated with different characteristics (such as early strength superplasticizer, retarding water reducer, pumping antifreeze and pumping water reducer, etc.), the country to meet the different engineering category, construction technology, construction technology and temperature conditions requirements. Application Technical Requirements 1. powder as a percentage of cementitious material calculations, the liquid product by solid content conversion usage, moisture from the mix subtracted out. 2. After using mixed better method, an appropriate extension of the mixing time in order to facilitate uniform. The liquid should be used and stored at a temperature above 15 ℃ conditions, avoiding the sodium sulfate crystals. Packaging and storage 1. The powder product within the plastic bags with a double bag, 25kg, 250kg big drum of liquid packaging or packaging agreement. 2. The rain and moisture, placed in ventilated and dry place. 3. valid for two years, extended after passing concrete experiments can continue to use.