1.1 This specification covers natural pozzolans for use in concrete where cementitious or pozzolanic action, or both, is desired, or where other properties normally attributed to pozzolans may be desired, or where both objectives are to be achieved.
KeywordsPozzolan, Natural, Strength Activity Index, Pozzolanic Efficiency or Activity Index
The existing sources of traditional fly ashes and pozzolans have been depleted or regulated out of existence by EPA emissions regulatory statutes. Natural pozzolans, generally considered impractical are now being reviewed for use on our market applications. This new standard would allow practical review of proposed natural pozzolans in a comparative test matrix with traditional requirements based upon practical market experience.
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top
Draft Under Development