ACI News Bulletin explains chemical admixtures

Chemical admixtures can significantly enhance the properties of concrete in both plastic and hardened states. ACI International’s newest educational bulletin, Chemical Admixtures for Concrete (E4-03), provides a comprehensive overview of these admixtures and explains how each type works to modify the chemical and physical properties of concrete and to control variability.

The bulletin takes a non-technical approach to a complex topic. In addition to explaining the various ways admixtures can improve concrete performance, it introduces the functions and applications of the following admixture types:

  • Air entraining
  • Water reducing and set controlling
  • Corrosion inhibiting
  • Shrinkage reducing
  • Admixtures for controlling alkalisilica reactivity
  • Admixtures for underwater concreting

The publication also provides information about the dispensing systems ready-mix plants use to accurately measure and inject liquid admixtures into concrete mixtures and the recommended injection sequence for the various classes of admixtures. A list of relevant ASTM standards and an admixture glossary are included for quick reference.

The cost of the 12-page bulletin is $14.00 for ACI members (nonmember price is $22.50). For more information or to order, call (248) 848-3800 or visit

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