How to improve the adaptability of concrete admixture and cement
Publish Time: 2023-05-16 Origin: Site
The adaptability of concrete and cement is related to the quality of concrete, which may affect the normal construction in serious cases. Therefore, in order to avoid this, it is vital to improve the adaptability of concrete admixture and cement, how to improve it? Xiaobian summarizes a few points, you can refer to it.
Ways to improve the suitability of concrete and cement:
1, strengthen the control of material temperature in the mill.
Because the control of C3A hydration depends on the balance of sulfate ions in the pore solution, so cement manufacturers must pay attention to the control of calcium sulfate content and dissolution rate in cement, strengthen the control of material temperature in the mill, avoid too high and too low temperature, this control for cement manufacturers is no difficulty.
2. Grind the cement mixture separately.
The superfine mixing material in cement can play an auxiliary "water reduction" role, improve the fineness of the mixing material in cement, and improve the strength of cement without reducing the mixing material content. Under the condition of maintaining cement strength, the mixing amount of mixed materials can be increased, the cost of cement production can be reduced, and the adaptability between cement and water reducing agent can be improved.
3, the preparation of concrete, can be used after mixing method or batch adding method and other measures to add water reducing agent, improve the workability of concrete. After mixing, only a small amount of water reducing agent is absorbed by ettringite, so the slump loss is small.
4. Use reactive polymer compounds.
The use of reactive polymer compound as concrete admixture makes the compound react slowly in the alkaline condition of cement hydration, so as to reduce the slump time loss of concrete, which is also one of the measures to improve the workability of concrete.
The above points are the main methods to improve the adaptability of concrete admixtures and cement, we may wish to refer to, in order to better ensure the quality of concrete.