A; Features and Uses FR-F-type antifreeze early strength agent, is a kind of water-reducing, air entraining, enhancement, antifreeze, Paul plastic, reducing the peak heat of hydration of cement and other features of powdered concrete early strength antifreeze. Stable performance, reliable quality, various indicators can meet national standards of quality concrete antifreeze requirements and conditions at the recommended dose, in line with JC 475-92, GB50119-2003 concrete admixture technical specifications. This product is suitable for concrete and reinforced concrete civil engineering and architecture in general, and negative at low temperature and under pre-cast structures. Of hydraulic, bridges and frost resistance of concrete projects with special requirements should be determined by tests. Two; the technical performance of a product; this applies to daily minimum temperature of concrete construction in winter of 0 to -15 ℃. 2; cement reaction product can promote negative temperature, accelerated growth early strength concrete, the concrete at negative temperature does not suffer damage, the product can improve the impermeability of concrete and freeze-thaw durability. This product is no corrosion of steel harmful effects. 3; This product complies with JC 475--92 "concrete antifreeze", GB50119-2003 "concrete admixture technical specifications" standard. Three; construction methods and precautions 1; Volume; determining dosage (with cement mass percentage) of temperature change according to the situation. 0 ~ -5 ℃ content 1.5-2.5%, - 6 ~ -10 ℃ content 3-5%, - 10 ~ -15 ℃ Volume 5 -. 6% ,. 2; dry mixed method can be used, should be extended stirred wet concrete water consumption, reduce evenly. 3; antifreeze mixed with Portland cement should give priority to select or ordinary Portland cement. Construction must be cleaned with a thickness of aggregate shall not contain ice and snow to freeze objects and the cracking of minerals. Transport and storage, must be kept unchanged after caking performance can be crushed after continued use, it should be noted after covering the conservation of antifreeze concreting shall watering. -3 Degrees should be taken to cover the mats or plastic film insulation measures 4; time is guaranteed to get the best results, the FDA or the user change the initial varieties of cement, according to the project requirements and the specific circumstances, to make the necessary concrete mix ratio test before you can use. 5; the product effective storage period of two years. Four; packaging and storage 1; This product is mounted on the inner plastic bag, net weight 40KG or 25KG. 2; This product should be stored in dry and ventilated warehouse, not damp. After the moisture can match the solution to use. Storage is valid for one year, after the expiration of concrete test subject, depending on the result of continued use.