Water-Cement Ratio - The ratio of the amount of water, exclusive only of that absorbed by the aggregates, to the amount of portland cement in a concrete or mortar mixture; preferably stated as a decimal by weight.

Water-Cementitious Ratio - The ratio of the amount of water, exclusive only of that absorbed by the aggregates, to the amount of portland cement and other cementitious material (fly ash, pozzolan, etc.) in a concrete or mortar mixture; preferably stated as a decimal by weight.

Whitetopping - Concrete overlay pavement placed on an existing asphalt pavement.

Workability: How easily fresh concrete can be placed and consolidated in forms.