Can be mixed with aggregate and other ingredients to make concrete mix, mortar mix, and base coat stucco. Complies with current ASTM C 150 and Federal Specifications for Portland cement. 47 lb. bag. To make concrete mix : 3 parts gravel, 2 parts all-purpose sand, 1 part Portland cement (by volume). To make Type S mortar mix : 3-1/2 to 4-1/2 parts masonry sand, 1/2 part hydrated lime, 1 part Portland cement (by volume).