a decorative aggregate - containing cementitious slurry having decorative aggregate and cementitious matrix composition forms a monolithic structure when effectively applied to a freshly poured cementitious base and simultaneously cured therewith . the slurry and the base are cured for a time sufficient for producing the monolithic structure with a decorative aggregate - containing cementitious surface . the slurry produces a decorative aggregate - containing cementitious layer having a cured thickness effective for permanently securing the decorative aggregate therein with a portion of the decorative aggregate exposed . various decorative surfaces are produced without requiring expensive hand broadcasting of the decorative aggregate , and without expensive surface grinding . dry components of the slurry are decorative aggregate and decorative cementitious matrix blend . the blend at least has between about 50 % and about 79 % blended quartzitic silica , between about 20 % and about 35 % portland cement , silica fume up to about 5 %, and optionally up to about 8 % class c - like fly ash .