This paper presents an experimental algorithm with the results of using steel fibers in ferrocement panels, which were recovered from tires scrap. Waste steel fibers were cut with the same geometrical characteristics of normal steel fibers and were used in the panels at different layers. To have a reference ferrocement specimen, a plain mixture without fibers and mixtures containing a ratio of recycled steel fiber were also prepared. Some mechanical tests, such as compressive strength, splitting tensile strength and flexural strength were determined. Furthermore, load deflection behaviors for 24 panels specimens were carried out under patch load. Test results show that the recycled steel fibers layers recovered from scrap tires affected the mechanical behavior of ferrrocement panels that are similar to the number of wire mesh layers. Depending on the distribution of R.S.F layers and wire mesh layers, the load-deflection curves were found. A comparison between these curves indicates that the R.S.F can reduce the deflection of panels, and increasing the number of wire mesh layers can increase the ability to bear stresses for panels. Rehabilitation with carbon fiber strips CFRP carried out with three forms (box network, inclined with diagonal, parallel to the diagonal and mix of diagonal and box network). The curves show that the rehabilitation with a parallel form to the diameter of the sample is a better treatment, which is characterized by resistance to stresses rather than other forms. We estimate that the recycled steel fibers increase the flexural strength and tensile strength, and 10% is the optimal ratio for increasing the flexural strength and tensile, increasing the number of wire mesh layers increases the ability to bear stresses of the panels. Recycled steel fibers can cause reduction in the deflection of ferrocement panels and can give the same bearing strength proximity (or less) to the panel containing the same number of wire mesh layers.

The ceramic techniques were used to prepare spinal ferrite (Mg‐Zn) to evaluate and investigate the microwaves absorption at X‐band and Ku‐band with formula (Mg1 − X Zn X Fe2O4) at x = (0.0, 0.1, 0.3, 0.4, 0.5, 0.6) where x is percentage of zinc in the ferrite. The dimension of samples was used according to the cavity of Network Analyzer System which were 22.6 × 10 × 10 mm to the X‐band cavity, then refine them to 15.5 × 10 × 10 mm within in the Ku‐band. The resonance peaks appeared at the frequencies 9, 10, 11, 14, 15, 16, and 17 GHz. It was found that the effect of increase sintering temperature increases the values of attenuation and absorbance with best result in behavior of absorbance for the sample Mg0.6Zn0.4Fe2O4 at the range of X‐band. X‐ray diffraction results showed that the structure was polycrystalline.