1. Dosage: generally 3-6% of cement. 2. In order to maintain the uniform quality of the concrete mixed with this agent, the mixing time should be extended by 1-2 minutes. 3. Concrete mixed with this agent cannot be used in orthopedics with active minerals. 4. If this agent becomes damp and agglomerates, it must be crushed or weathered before use. Its performance will remain unchanged.
Concrete early strength agent is one of the concrete admixtures, which refers to admixtures that can increase the early strength of concrete and have no significant impact on the later strength. The main function of early strength agent is to accelerate the hydration rate of cement and promote the development of early strength of concrete; it has both early strength function and certain water reduction and enhancement function. Early-strength antifreeze uses special antifreeze materials, which can effectively reduce the freezing point of concrete and mortar, and greatly improve the antifreeze performance of concrete and mortar at negative temperatures. It can increase the early strength of concrete and mortar by more than 80% without reducing the later strength, thereby ensuring that the strength is equally developed under positive and negative temperature conditions. The effect is remarkable.
1. For construction at 0~-5℃, 4~6% can be added.
2. For construction at -5~-10℃, 5~8% can be added.
3. When constructing at -10~-15℃, 8~10% can be added.
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