Specified at the time of ordering; the amount of cement expressed in bags per cubic yard of concrete. (i.e. 5bag, 5.5bag, 6.0bag) more bags = more strength.
A quantity of Portland cement: 94 pounds
Microscopic air bubbles intentionally incorporated in concrete during mixing to increase durability and resistance against damage by repeat freeze-thaw cycles and deicing chemicals.
Granular material, such as sand, gravel or crushed stone used with a hydraulic cementing medium to produce concrete or mortar.
A substance which, when added to concrete increases the rate of hydration which shortens time of setting, or increases the rate of hardening and strength development.