The application of commercial concrete has been basically popularized in China, and the use of admixtures has also promoted and accelerated the development of concrete technology.
Admixtures have also solved various technical problems in the application of concrete, such as long-distance and ultra-high transportation of concrete, self compacting of concrete, and crack control of super large concrete structures.
Admixtures have been widely used in ultra-high strength and underwater non dispersing concrete.
Due to the uneven distribution of concrete material resources in our country and the limitation of green environmental protection, some regions are facing a shortage of sand and gravel aggregate resources.
As a result, many areas have to switch to using ultra-fine sand, machine-made sand, and discontinuous graded aggregates, which leads to the failure of commercial concrete to achieve the expected technical effects after the use of additives and a decrease in concrete quality.
In addition, some technical personnel in concrete production enterprises have certain misconceptions about concrete admixtures, and their improper application leads to frequent problems and even engineering accidents after using admixtures.
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