Dataset for the paper “Criado, M., Torres, E., Hinojosa-Platero, J., Pachón-Montaño, A. 2025. Decontamination-Sludge-Induced Corrosion of Steel in Simulated Pore Solutions and Alkali-Activated Slag Pastes. Corrosion and Degradation Materials. 6(1), 8”

[EN] This is the experimental dataset used in the paper Corrosion and Degradation Material, 6: 8 (2025) (https://doi.org/10.3390/cmd6010008) in which the potential corrosion and current density of the steel sheets, simulating drums embedded in new sodium carbonate and silicate-activated slag formulations with surrogate decontamination sludges have been determined. This data set includes the results of the FTIR spectrum of the surrogate decontamination sludge, which presents the vibration bands of its main constituents such as EDTA, hydrazine and citric and oxalic acids. In addition, the results of the evolution of the corrosion potential (Ecorr) and corrosion current density (icorr) values as a function of time for carbon steel sheets submerged in simulated Portland cement and alkali-activated cements pore solutions along with the decontamination sludge have also been included, where was observed that the steel was in an active state. The results of the evolution of these two parameters and the electrochemical impedance spectroscopy for carbon steel embedded in the reference cement and sodium carbonate-activated slag and sodium silicate-activated slag pastes have been compiled in this data set and the carbon steel coupons in the reference cement showed the best corrosion resistance, followed by those embedded in the sodium silicate-activated slag. The results of the Raman spectrum of the corrosion deposits on the surface of the steel embedded in the sodium carbonate-activated slag show the presence of hematite. Finally, the results of the characterisation of the cementitious pastes mixed with the decontamination sludge by XRD and FTIR have been included, where the presence of the acidic sludge results in a decrease in pore-water pH and favours the initiation of the corrosion process in the sodium carbonate-activated slag paste.