Active standard | Published: 01/02/2025

ASTM C618-25a

Standard Specification for Coal Ash and Raw or Calcined Natural Pozzolan for Use in Concrete (Includes all amendments and changes 4/3/2025).

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Detail information

Designation: ASTM C618-25a

Publication date: 01/02/2025

Pages: 5

Country: American technical standard

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Anotation

This specification covers coal fly ash and raw or calcined natural pozzolan for use in concrete where cementitious or pozzolanic action, or both, is desired, or where other properties normally attributed to fly ash or pozzolans may be desired, or where both objectives are to be achieved. Fly ash and natural pozzolans shall conform to the prescribed chemical composition requirements and physical requirements. The materials shall be tested for fineness, strength activity index, water requirement, soundness, and autoclave expansion or contraction.

Keywords:
bottom ash, coal ash, fly ash, harvested coal ash, natural pozzolan,, ICS Number Code 91.100.30 (Concrete and concrete products)

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