Non-invasive FTIR study of mortar model samples: comparison among innovative and traditional techniquesValentina Brunello, Cristina Corti, Antonio Sansonetti, Cristina Tedeschi and Laura RampazziEur. Phys. J. Plus, 134 6 (2019) 270DOI: https://doi.org/10.1140/epjp/i2019-12667-1