Illinois Urban Manual
Material Specifications
532. MINERAL ADMIXTURES FOR CONCRETE
1. SCOPE
This specification covers the quality of mineral admixtures for concrete.
2. QUALITY
Fly ash used as a partial substitution of portland cement shall conform to
the requirements of ASTM C 618, Class C or F except the loss on ignition shall
not exceed three (3) percent, unless otherwise specified. Lot-to-lot variation
in the loss on ignition shall not exceed one (1) percent.
Blast-furnace slag used as a partial substitution of portland cement shall
conform to ASTM Standard C 989 for ground granulated blast-furnace slag.
Specification Date
10/98
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