Concrete admixtures' construction chemicals are the ingredients other than water, portland cement, and aggregates that are used to modify the properties such as heat of hydration, accelerate or retard setting time, workability, water reduction, and dispersion and air-entrainment, impermeability, and durability factors. Concrete admixtures are available as mineral and chemical admixtures.
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Chemical admixtures are the ingredients in concrete other than portland cement, water, and aggregate that are added to the mix immediately before or during mixing. Producers use admixtures primarily to reduce the cost of concrete construction; to modify the properties of hardened concrete; to ensure the quality of concrete during mixing, transporting, placing, and curing; and to overcome certain emergencies during concrete operations.
Various types of admixtures are used in concrete to enhance the performance of concrete. Concrete admixture is defined as the material other than the aggregate, water and cement added to the concrete.
Types of Concrete Admixtures
Concrete admixtures are of different types and they are as follows:- Water Reducing Admixtures
- Retarding Admixtures
- Accelerating Admixtures
- Air entraining concrete admixture
- Pozzolanic Admixtures
- Damp-proofing Admixtures
- Gas forming Admixtures
- Air detraining Admixtures
- Alkali Aggregate Expansion Inhibiting Admixtures
- Anti-washout Admixtures
- Grouting Admixtures
- Corrosion Inhibiting Admixtures
- Bonding Admixtures
- Fungicidal, Germicidal, Insecticidal Admixtures
- Coloring Admixtures
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