Admixtures are materials that are added to concrete in small quantities to alter its properties in some way. These materials can be added to the concrete mixture during the mixing process to improve the workability, strength, durability, or other characteristics of the final product.
Some common types of admixtures include: Water-reducing admixtures, Air-entraining admixtures, Accelerating admixtures, Retarding admixtures, Plasticizers, and others. Admixtures can be in the form of liquid, powder or granules. They are added to the concrete mixture in small quantities, typically around 0.5% to 5% by weight of cement depending on the type of admixture, the desired properties of the concrete and the environmental conditions.
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