1. The performance is different.
Concrete early strength additives refer to admixtures that can improve the early strength of concrete. The types of early strength additives include: calcium chloride, sodium chloride, mirabilite, and gypsum. , water glass, sodium aluminate, sodium carbonate, calcium carbonate, sodium fluoride, triethanolamine, etc.
Early-strength antifreeze has the properties of anti-freezing, lowering freezing point, and significant early-strength effect during use. It can shorten the natural curing time of concrete and improve the frost resistance of concrete. , impermeability.
The components of early-strength antifreeze are designed based on the ice crystal transformation theory, and are composed of early-strength, reinforcement, antifreeze, air entrainment, and rust prevention components. Adaptable to various cast-in-place prestressed reinforced concrete. It is suitable for anti-freezing early concrete in industrial and civil buildings, water conservancy, road and bridge construction, etc. It is the first choice admixture for winter construction using the comprehensive heat storage method.
2. The occasions and periods of use are different.
Concrete early strength additives are mostly used in winter or during emergency repairs. Concrete early strength additives have no significant impact on the later strength of concrete, so they should be used in the early stage. Generally speaking, when the temperature of the day is between -5 ℃ and 5 ℃, with alternating positive and negative temperatures, early-strength agent or early-strength water-reducing agent can be used.
If the daily low temperature reaches or falls below -10 ℃, early-strength antifreeze with a specified temperature of -5 ℃ can be used. If the daily low temperature is -15 ℃ or -20 ℃, use early-strength antifreeze with specified temperatures of -10 ℃ and -15 ℃ respectively.
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