In situ corrosion monitoring campaign of a weathering steel urban building

Thanks to its sensitivity and low invasiveness Electrochemical Impedance Spectroscopy (EIS) is a powerful technique for corrosion assessment and monitoring of metallic artifacts exposed outdoor. This paper presents some preliminary results of an in situ monitoring campaign, started in 2016 and still in progress, carried out to assess the atmospheric corrosion behavior of the weathering steel structures of a residential building, known as 25-Green, designed by the architect Luciano Pia and located in Torino (Italy). FESEM and μ-Raman measurements were performed on some specimens of the corrosion patina to correlate the chemical composition and morphology of the corrosion products layer to its protective effectiveness, taking into account the different exposure conditions.