Concrete early-strength agent and preparation method thereof
An early-strength agent and concrete technology, applied in the field of concrete early-strength agent and its preparation, can solve the problems that the early strength of concrete cannot reach the expected value, the effect of the early-strength agent is not obvious, and the cement hydration time is long, etc. Increased strength, reduced impact, reduced corrosion effects
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Embodiment 1-12
[0050] Embodiment 1-12: a kind of concrete early strength agent, the component that embodiment 1, 4, 7, 10-12 comprises and corresponding quality are as shown in table 1, and are prepared by the following steps:
[0051] S1: Mix calcium nitrate, triethanolamine, aluminum sulfate, nano-silica, ethylene glycol, and additives, keep warm at 35°C, and stir at a stirring speed of 30r / min for 25min to form mixture A;
[0052] S2: Cool the mixture A to 15°C, then put the water-soluble hydroxide and inorganic metal salt into the mixture A, stir at 15°C at a stirring speed of 30r / min for 25min, and obtain the early strengthening agent.
Embodiment 1
[0055] In embodiment 1, all the other hydroxides are sodium hydroxide, and the inorganic metal salt is magnesium carbonate.
Embodiment 2
[0056] Embodiment 2: a kind of concrete early strength agent, the difference with embodiment 1 is that all the other hydroxides in embodiment 2 adopt potassium hydroxide, and inorganic metal salt is the ferric chloride of 1kg and the magnesium sulfate of 2kg.
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