Technical Questions

ACI Committees, Membership, and Staff have answered common questions on a variety of concrete related topics.

Are pozzolans all alike?

Q. Are pozzolans all alike?


A. No. It is therefore important to make sure that a proposed pozzolan meets the specification requirements and is particularly capable in any specific respect desired, such as reduction in expansion from the alkali-silica reaction or reduction of the rise in temperature.


References: SP-1(02); E3-13 ; SP-221; ACI CT-23; ACI 232.1R-12; ACI 232.2R-03; ACI 234R-06; Supplementary Cementing Materials in Concrete; ASTM C618; ASTM C1240

Topics in Concrete: Pozzolan; Cementitious Material; Materials; Concrete Fundamentals

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