The present invention generally relates to mixing systems for concrete, mortar, grout or other aggregate and more specifically to portable single person carries mixing systems capable of mixing concrete or other aggregates uniformly, rapidly and with less waste. In accordance with one aspect of at least one embodiment of the present disclosure, a portable aggregate mixing system is disclosed comprising a mixer with a power source and mixing tines and a mixing container comprising sidewalls, a bottom surface, a front and back wall and an open top. The mixing system coordinates the mating of the mixing blades or tines of a mixer with the surface characteristics of a customized or standard mixing tub or wheelbarrow to ensure uniform mixing of aggregate occurs quickly with minimal waste.