The interaction between admixtures and cement:
The main function of admixtures is to improve the performance of concrete by adding corresponding admixtures to it, thereby promoting the improvement of construction quality and project efficiency. Admixtures can improve various properties of concrete because they interact with it. Generally, the interaction between admixtures and concrete is adaptability, compatibility and compatibility. Due to the significant differences in the main components and the proportion of each component of admixtures, the adaptability between different admixtures and concrete can vary greatly. Admixtures with poor adaptability not only lead to low water reduction rate of concrete, but also cause rapid setting of concrete, which affects the normal construction of the project. Admixtures with good adaptability can effectively increase the water reduction rate of concrete and to some extent prevent the occurrence of cracks and fissures in concrete. The compatibility between admixtures and concrete affects the efficiency of admixture use. If the compatibility between admixtures and concrete is poor, concrete will not be able to mix with admixtures, which will lead to the waste of some admixtures.
Suggestions on the selection principles of admixtures for ready-mixed concrete:
1.Concrete admixture manufacturers need to have complete pre-sale and after-sale services. When selling concrete admixtures, concrete admixture manufacturers should pay attention to relevant factors, establish relatively complete technical documents for concrete admixtures as much as possible, provide instructions for the use of concrete admixtures, and ensure that the sale of concrete admixtures is within the scope of available technical support.
2. Choose the right quality of admixtures. When choosing admixtures for ready-mixed concrete, it is necessary to master the detailed applicable varieties and dosages of admixtures. Through comparative tests, find relatively suitable concrete admixtures, and choose high-quality admixtures as much as possible to fully exert the role of concrete admixtures.
3. Choose a metering scheme suitable for production automation. Choosing a metering scheme suitable for production automation is also an important principle for the selection of admixtures for ready-mixed concrete.
4. Choose admixtures with high economic benefits. Choosing admixtures with high economic benefits is to better meet the construction and production needs of construction units. It should be in line with the current situation of construction units, have certain comprehensive analysis characteristics, meet the economic index coefficient requirements of construction units to a certain extent, and have economic benefits. Therefore, this selection scheme of admixtures is highly recognized by construction units.
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