With the development of concrete preparation technology and construction technology, people are not only paying attention to its mechanical properties, but also putting forward higher requirements for the working performance and durability of concrete. In order to make the performance of concrete meet the technical requirements and construction requirements, it is often necessary to add some very low proportion of admixtures to the concrete to improve the performance of the concrete. However, for people outside the construction engineering industry, they know very little about concrete admixtures. For people in the construction engineering industry, they know relatively much about concrete water-reducing admixtures. However, they are not exposed to other types of admixtures or Little is known about it. Therefore, this article summarizes the definition, types and applications of concrete admixtures to enhance people's understanding and knowledge of concrete admixtures.
1. Definition
Concrete admixtures: refer to substances added during the mixing process of concrete to improve the properties of concrete. It is mainly used to improve the properties of fresh concrete and improve the properties of hardened concrete.