Abstract: A mobile system and process for manufacturing cement additives and/or concrete admixture products comprises at least two tanks each containing a different raw material for manufacturing cement additives or concrete admixtures; a frame for mounting and transporting as an integral unit at least two pumps operative to transfer the raw materials into a blender which mixes the raw materials together to provide a cement additive or concrete admixture for dispensing at the destination site, which could be the manufacturer's new or remote manufacturing site, or even a customer's site such as a cement plant or a ready-mix concrete plant. The frame can be placed upon or attached to wheels, as in a truck or trailer frame, and the tanks may also be placed on or secured to the truck or trailer frame. A preferred skid-mounted system comprises pumps, valves, meters, and a computer processor unit which can control the equipment and permit adjustments to be made at the destination site.