Precautions For The Use Of Concrete Admixtures

Therefore, the production and use of concrete admixtures should pay attention to the following matters :(1) use should be based on specific cement. Combined with the function of various water reducing agent and concrete function to determine the reasonable dosage. Cement can be saved by strengthening the bond strength of the interface layer through hydration reaction only on the surface layer of the mixture particles. Under the condition that the technical conditions permit, the reasonable increase of concrete admixture quantity is the admixture excessive substitution technology. (2) Concrete with admixtures usually has high fluidity and slow hydration, and excessive vibration in the construction process leads to floating and stratification of some light admixtures, causing dust in paving concrete. Admixtures should be appropriately added to pavement concrete. Concrete slump should not be too large to avoid segregation of concrete due to excessive vibration.