Type I Cement
Type I cement is a general purpose portland cement suitable for all uses where special properties are not required. It is used where cement or concrete is not subject to specific exposures, such as sulfate attack from soil or water, or to an excessive temperature rise due to heat generated by hydration. Its uses include driveways, roads, sidewalks, reinforced concrete buildings, bridges, railroad structures, storage tanks, reservoirs, culverts, sewers, water pipes and masonry units.
Type III Cement
Type III cement is a high-early strength portland cement that provides high strengths at an early age, usually a week or less. It is used when forms are to be removed as soon as possible, or when the structure must be put into service quickly. In cold weather, its use can reduce the curing period required.
An economic alternative to Type III, this specially formulated cement shares similar characteristics and redeeming qualities of a Type III, and will likewise achieve similar results in the field, but at a reduced cost to the consumer. This ASTM C150 Type III cement is a good choice for concrete block, pipe and precast product applications where economy of scale is desirable.