English

Noun

pozzolan ‎(plural pozzolans)

1. Any material which, when combined with calcium hydroxide, exhibits cementitious properties; often used as an extender with Portland cements.
   • 2009 March 31, Henry Fountain, “Concrete Is Remixed With Environment in Mind”, in New York Times:

     Both are what are called pozzolans, reactive materials that help make the concrete stronger.

Derived terms

• pozzolanic

Related terms

• pozzolanic cement
• pozzolanic fly ash cement

See also

• pozzolan on Wikipedia.Wikipedia