The ratio of cement by volume for standard concrete is one part Portland cement, three parts aggregate and three parts sand. General purpose mortar requires one part Portland cement, one part hydrated lime and three part... More »

The standard ratio for general purpose mortar, type N mortar, is one part Portland cement, one part lime and six parts sand. Type N mortar is typically used for exterior walls above ground level that are exposed to the e... More »

One rule for mixing concrete is 1 part cement and 2 parts sand to 3 parts aggregates by volume or about 10 to 15 percent cement, 60 to 75 percent aggregate and 15 to 20 percent water by weight. Entrained air in many conc... More »

The standard ratio for general purpose mortar, type N mortar, is one part Portland cement, one part lime and six parts sand. Type N mortar is typically used for exterior walls above ground level that are exposed to the e... More »

One rule for mixing concrete is 1 part cement and 2 parts sand to 3 parts aggregates by volume or about 10 to 15 percent cement, 60 to 75 percent aggregate and 15 to 20 percent water by weight. Entrained air in many conc... More »

The basic mix ratio for concrete is one part water, two parts cement and three parts sand. An alternative ratio is one part cement, two parts sand and three parts gravel with enough water added until the mixtures reaches... More »

Concrete is composed of aggregates, which can be any or a combination of sand, gravel or rocks that is held together by cement. The cement itself, when mixed with water, serves as a paste that holds all the components of... More »