Antifreezing agent

Antifreezing agent
Meet JC475-2004 standards
Antifreeze agent is an admixture that can harden concrete under negative temperature and reach the expected performance (enough antifreeze strength) under specified curing conditions, According to their composition can be divided into strong electrolyte inorganic salts (chlorine salts, chlorine salt rust inhibitors, chlorine-free salts), water-soluble organic compounds, organic compounds and inorganic salts compound and compound antifreeze.
 
Product performance
It can significantly improve the early strength of concrete and is suitable for concrete construction under ambient temperature of -15℃.With anti-freezing, early strength, water reduction, plastic and improve the durability of the comprehensive performance.Does not contain chloride ion, does not corrode the reinforcement.No ammonia and toxic substances, no adverse effects on human body and the environment.
 
Application Scope
All kinds of concrete for construction in winter (the minimum temperature is not less than -15℃), including commercial concrete, pumped concrete, pre-mixed and cast-in-place reinforced concrete, prestressed concrete and large fluidity concrete.
 
Model Item index
top quality goods qualified goods
Water reducing rate(%)                  ≥ 10 --
Air content(%)                         ≥   2.5 2.0
Setting time(min) Initial setting time and final setting time -150~~+150 -210~~+210
Ratio of compressive strength(%)
set point of temperature -5 -10 -15 -5 -10 -15
R-7 20 12 10 20 -10 -15
R 28 100 95 95 90
R-7+28 95 90 85 90 85 85
R-7+56 100 100
28d ratio of shrinkage 135 -- --
Ratio of penetrationheight(%)
100 -- --
50 times Loss rate of freeze-thaw intensity
(%)≤
100 -- --
 
Product Usage
 
Recommended dosage: 3%-10% (in the total amount of cementitious materials), the best dosage should be confirmed by test
It should be added to the mixer together with the mixing water
 
Technical points of application of antifreezing agent
1. The freezing point of concrete mixture is related to the liquid phase concentration of antifreeze, so the lower the temperature, the dosage of antifreeze should be increased appropriately.
2. Different antifreeze use temperature is different (at present mostly 0~~-15℃), such as a certain antifreeze specified use temperature is -10℃, the temperature fluctuation range of the day is about -5~~-15℃.
3. When mixing antifreeze in concrete, we should also pay attention to the choice of raw materials and curing measures.If Portland cement or ordinary Portland cement should be used as far as possible, should not use slag and other mixed cement, aluminate cement is prohibited;When more Na+ and K+ are contained in antifreeze, active aggregate shall not be used.Under the condition of negative temperature curing should not be watered, exposed surface should be covered.
4. In the daily minimum temperature is -5℃, concrete with a layer of plastic film and two layers of straw bags or other substitutes to cover curing, can use early strength agent or early strength water reducer instead of antifreeze agent.
5. When the daily minimum temperature is -10℃, -15℃, -20℃, and the above insulation measures are adopted,the prescribed temperature of -10℃, -15℃ and -20℃  antifreezing agent can be used respectively.
6. If the antifreeze is directly added with powder and agglomerates are affected by moisture, it should be ground through the sieve hole of 0.63mm before use.
 
Package and Storage
Package:Powder package with woven fabric bag with plastic liner, including 25kg/50kg bag.Liquid package with 200kg drum,IBC tank and Flexitank.
Storage:It should be stored in a dedicated warehouse that is well-ventilated and dry.Its shelf life is one year, if after the expiration date, it can continue to use when the testing results fall within the established range.
Transportation:This product is non-toxic and non- explosive. It can be transported by truck, ship and train.

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