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AASHTO M 321-04 (2012) - Standard Specification for High-Reactivity Pozzolans for Use in Hydraulic-Cement Concrete, Mortar, and Grout


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This specification covers high-reactivity pozzolans for use as a mineral admixture in portland cement concrete and mortar to fill small voids and/or where pozzolanic action is desired. High-reactivity pozzolans are microsilica products with a particle size typically one to two orders of magnitude smaller than portland cement. These materials are usually supplied in undensified or densified dry form. If the material is supplied in a densified form, the tests should be performed on the as-collected undensified material before being processed into densified form.
This standard is not intended for specifying silica fume. It is recommended that M 307 or ASTM C 1240 be used for that purpose.

  • Model: 2QW20CL8
  • 8885 Units in Stock

This product was added to our catalog on Thursday 01 January, 1970.

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