Abstract—The intention of this work is to examine synthesizing of Copper-Nickel ferrites nanoparticles using suitable local materials and by applying simple laboratory operations. Output was analyzed to make sure it conformed to the required using X-ray diffraction (XRD) and X-ray Fluorescence (XRF). The Transmission Electron Microscopy (TEM) used to determine the shape of the resulting nanoparticles. This nanoparticles was used as an addition in the cement mortar as a replacement percentage of cement weight. The specimens of ordinary Portland cement mortar used contain, sand: cement ratio of 2:1 and water: cement ratio was 0.35. Percentage 0.07% cement wt of high range water reducer. Also, 15% cement wt was silica fume. The compressive strength was evaluated at age of 7 and 28 days to determine the optimum ratio of nanoparticles which found 0.055% of cement wt. Then models of structural elements were casted to study the behavior of the composites. Also, the microstructure was characterized by means of Scanning Electron Microscope (SEM) analysis.