TY JOUR TI DEVELOPMENT OF A FIELD METHOD FOR THE STUDY OF BULGING FLAME-RETARDANT COATINGS KW fire safety KW fire protection treatment quality KW field research method KW bulging fire protection JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Tsygankov, M.S. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia