ASTM C 618 - 05 Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

American Society for Testing and Materials (ASTM). Current edition approved July 1, 2005. Published July 2005. Originally approved in 1968. Last previous edition approved in 2003 as C 618–03. 3 p. 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.