The study evaluate the scourge of corrosion effects on reinforcing steel with the application Calotropis procera exudates / resin coated directly in different thicknesses to reinforcing steel, embedded into concrete slabs and exposed to coastal waters with a high concentration of salt to curb the rate and degree of corrosion. The hardened concrete slab is fully immersed in 5% sodium chloride (NaCl) solution for 360 days, with interval inspection and routine tests at 90 days, 180 days, 270 days and 360 days. The maximum calculated percentile control value is -59.22% compared to the corroded and coated values of 229.5% and -59.22% and the controlled potential difference value is 8.8%, 84.28% corroded and 10.43% coated. The maximum yields of the controlled and coated samples were -105.37mV and -122.66mV 6mV, which showed the relationship between corrosion potential and opportunity in the reference range 𝐸corr > −200mV. Corrosion potential probability values of uncoated samples has maximum calculated range of -308.77mV, the result is within the reference value of dependence between corrosion potential and probability of value −350mV ≤ 𝐸corr ≤ −200mV indicates a high range of values, which is 10% or uncertain probability of corrosion. Results in comparison from the reference range (controlled), it is observed that show that non-coated samples showed corrosion potentials with higher values as a result of accelerated corrosion induced as compared to coated samples. The maximum value calculated from the concrete resistance of the controlled sample is 111.34% compared to the corroded and coated value of -54.53% and 135.59% and the maximum value of the percentile difference from the control is 19.17% compared to the corroded and coated value of 3 0.02% and 15.66%. The results of testing controlled samples coated with concrete resistance obtained the maximum average values of 15.28 kΩcm and 17.53kΩcm with a description of the value 10 < 𝜌 < 20 (low) compared to the corrosion value of 7.9kΩcm with specifications 5 < 𝜌 < 10 (high) and with a reference range of dependence between concrete resistance and corrosion probability at significant corrosion probability. The calculated maximum percentage of the controlled yield strength was 8.31% compared to the corroded and coated values -7.35% and 8.66% and the possible difference values of 0.45% controlled, 0.62% corroded and 0.72% coated. The calculated maximum percentage of the controlled of ultimate tensile strength is 1.99% relative to corroded value of -2.69% and the coated values of 2.78%% and with differential potential values of 0.01% controlled, 0.01% corroded and 0.01% coated. Comparatively, corroded samples exhibited high yielding to low load application representing the effect of corrosion on the mechanical properties of reinforcing steel that has resulted to low load carrying capacity, the corroded also recorded higher strain ratio as compared to the coated to the parameters above. The maximum calculated percentage was set at 0.929% versus corroded - 0.919% and coated at 1.043%, with a percentage difference in corrosion of 0.004% versus 0.067% coated. For comparison, the results of the corroded samples showed a reduction values compared to the diameter of the reinforcement before and after the induction accelerated corrosion test with a percentage decrease in value from 0.048% to -0.919% and an average value in the range from 11.96mm to 11.91mm. Comparatively, the results obtained show a reduction of the mean and percentile values for corroded from 0.07 kg to 0.05 kg and 35.19% to -23.61%. The summary results show that the corrosion effect on corroded samples causes a decrease in weight compared to coatings with percentile values and an increase in mean values, which causes a slight increase in volume with coating thickness.