The paper presents the most optimum concentration of crushing dust of concrete scrap (CDCS) ground in the laboratory spherical mill to a specific surface of 4000 cm2/g for further replacement of a part of cement. High strength parameters are achieved at partial replacement of cement with various concentrations of CDCS obtained from concrete fragments of reinforced concrete plates produced in 1976. X-ray phase analysis of cement stone samples obtained using 30% of CDCS instead of cement separately and together with Odolit-K and Frem Giper S-TB superplasticizers in 1, 7 and 28 days of hardening in normal conditions is used. The morphology of a cement stone surface with the use of CDCS and superplasticizers in various periods is studied.Keywords-crushing dust of concrete scrap, superplasticizers, Xray phase analysis, cement stone surface.I.