Technical Questions

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Specialty admixtures

Q. What are some other admixtures?

 

A. There are other admixtures to enhance concrete properties and improve the performance of structures (ACI 212.3R). For example, corrosion-reducing admixtures are available to protect the reinforcing steel from corrosion (ACI 212.3R, 222R, 224.1R). Shrinkage-reducing admixtures reduce drying shrinkage and minimize cracking. Other specialized admixtures include: gas-forming admixtures; grouting admixtures; expansion- producing admixtures; bonding admixtures; pumping aids; coloring admixtures; flocculating admixtures; fungicidal, germicidal, and insecticidal admixtures; damp-proofing admixtures; permeability-reducing admixtures; anti-washout admixtures; and chemical admixtures to reduce expansion due to alkali-silica reaction.

 

References: SP-1(02); E4-12; ACI 212.3R-16; ACI 222.2R-14; ACI 222R-19; SP-288

Topics in Concrete: Admixture; Concrete Fundamentals; Materials; Corrosion; Durability

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