This product is an industrial surfactant, a variety of composite materials early strength agent, plasticizing agents, enhancers and other preparation of non-chlorine salt early strength superplasticizer, which is characterized by significant early strength enhancement, there are certain plastic entraining effects of cheap content less easy to use. In concrete reinforced concrete, prestressed concrete projects and components used in the construction period can be shortened to improve the template venue turnover, reduce energy consumption, save cement winter construction can improve the ability of anti-freezing of concrete. Mainly used for more than -5 degrees situ or precast concrete, reinforced concrete and prestressed concrete. Suitable for large area concrete cast-rise buildings, ground beams, foundation, dam hydraulic engineering, precast yard hollow floor wing, bridges, roads, etc., early removal time, accelerate the venue turnover. One; the main technical performance 1; early strength of the effect is significant; the compressive strength of concrete and mortar at 0-5 degrees, three days can be increased by 50-60%, 7 days can be increased by 30-50% (up to design strength 70%), 28 days can be increased about 20% at about 20 ° compressive strength of concrete and mortar; 3 days can be increased by 50% (up to 70% of the design strength), 28 days can be increased 10-20% the above. 2; 10% water reduction, diminished water when improving workability of concrete and mortar and mortar mixing material, hardened concrete impermeability and durability improved, slag and ordinary Portland has better adaptability , no corrosion of steel effect, with freezing capacity, improve the mechanical indicators of concrete, cement savings of 5 to 8% no corrosion of steel. Two; the use of the methods and precautions 1; This product recommended dosage is 1.5 to 2.5% of the amount of cement can be increased to 3% 2 negative temperature; incorporated directly into the concrete mixing, concrete mixing prolonged time after molding . 3; mixed concrete or mortar FDA should reduce the amount of water corresponding and appropriate to extend the mixing time, concrete transport and parking time as concrete after molding. 4; After forming the concrete in cold seasons strengthen the insulation (covering straw bags, plastic film cover). Wetland conservation should be strengthened hot season. Referring to the effect of this specification is to ensure the user is advised to use the first time the FDA or replacement of cement According to the project requirements and the specific circumstances of the concrete mix to make the necessary tests in order to obtain the best results; 5. Three; packaging and storage 1; This product is mounted on the inner plastic bag, net weight 40KG. This product is kept to dry and ventilated, cool warehouse avoid moisture. As moisture caking can crush use. 2; this product is valid for three years overdue for an experiment depends upon the concrete results of continued use.