Secondary grouting how should choose?

Secondary grouting, the construction industry is often encountered problems! Such as: steel structure factory building anchor bolt grouting, equipment foundation grouting, etc. , as the user how to choose grouting material type? In the process of grouting material using cuhk will appear such problems, excessive pursuit of progress, inadequate maintenance, using method is not correct, and too much water to strength on the slow, the pursuit of early strength and other aspects. When using grouting materials, grouting material model is more, have normal, early strength difference, but when buy, users do not tell factory construction situation, does not show the construction site, not accurate enough. General grouting material belong to high strength without shrinkage, but on the strength of time is different, so the grouting material models are also different. But when construction enterprises after using, found that the grouting material is not belong to the early strength high, the solidification speed is not fast, at that time, they will think of and some concrete early strength agent products as a way to accelerate the rate of solidification. For concrete early strength agent, classification is more, there are retarded early strength agent, coagulant type of early strength agent, cement products with early strength agent, cement and clay condensation with early strength agent, early strength agent, used for building freeze protection of these types of early strength agent of different raw material composition, added to the grouting material, easily with grouting material added in the organic chemistry material produces chemical reaction, thus affecting the normal use. After added early strength agent components are not suitable for grouting materials prone to cracking phenomenon, more quickly in a corrosive environment degradation.