Improvement of Methodology for Assessing Fire-Protective Efficiency of Intumescent Coatings Applied on Metal ConstructionsAndrei Ustinov, Anastasiia Babikova, Ol’ga Zybina, Denis Lobov, Marya Printseva, Irina Klaptyuk and Mikhail ShkitronovE3S Web Conf., 320 (2021) 02009DOI: https://doi.org/10.1051/e3sconf/202132002009