Cement compositions, namely, cement blends and cementitious mixes that contain hydraulic cement, such as Portland cement, and one or more supplementary materials, such as man-made pozzolans, fly ash, metallurgical slag, ground glass, silica fume, calcined clay, shale dust, natural pozzolans, volcanic ash, pumice, trass, tuff, diatomaceous earth, metakaolin, and mineral fillers, such as ground mineral powders, rock dust, stone dust, quarry fines, mine tailings, precipitated calcium carbonate, concrete mixer washout fines, and ground recycled concrete, the foregoing for use in concrete and concrete materials, such as ready-mixed concrete, concrete premixes, mortar, concrete slabs, concrete walls, concrete pillars, precast concrete, sprayed concrete, grout, and stucco