Additives to concrete: varieties and their application

Additives to concrete are substances that are added to mixed concrete in order to change its physical and mechanical properties

Concrete is one of the most common construction materials in the world, and its properties can be modified and improved with a variety of additives. They can improve strength, service life, resistance to aggressive environments. Reduce water permeability and facilitate the processing of concrete.

Let’s consider the types of additives to concrete and their use

Plasticizers (superplasticizers). These additives reduce the water needed to mix concrete while maintaining its workable consistency. They make it easier to work with concrete and allow you to reduce the ratio of water to cement. Which improves the strength and durability of concrete.

Hardening Accelerators and Retarders. Accelerators help shorten the setting time of concrete, which is especially useful in cold construction conditions. Retarders, on the contrary, provide an extension of time for mixing and use of concrete.

Air-entrained admixtures. These admixtures introduce microscopic air bubbles into the concrete structure. Which increases the resistance to freezing and thawing, especially in regions with a harsh climate.

Anti-corrosion additives. The addition of such substances can increase the resistance of concrete to aggressive environments, such as salt solutions or chemical reactions.

Moisture-proofing additives. To prevent water permeability of concrete, moisture-proofing additives are used, which help create a barrier against moisture.

Fiber Additives. The addition of steel, glass, or polymer fibers can improve concrete’s strength and crack and tensile resistance.

Colorants. If you want to color the concrete in a certain color, colorants are used, which are added to the mixture.

The application of these additives may vary depending on the specific requirements of the construction project and the conditions of use of the concrete. Additives can be introduced directly during the mixing of the concrete mixture or already at the construction site where the concrete is used. It is important to consider that the correct choice and dosage of additives to concrete play a key role in achieving the desired results and ensuring the quality of the construction object.