Comprehensive assessment of fire protective intumescent paint "terma"

Abstract

Fire protection of steel structures is aimed at increasing their fire resistance, the indicator of which is the fire resistance limit. The paper presents a calculation approach to solution of the problem of critical heating time determining for building structures with intumescent compositions. Methodological approach for assessment of heating layers of intumescent fire protective coating for different types of steel structures is developed. The applied approach allows taking into account the influence of the basic thermophysical parameters of the fire protection composition on its efficiency. The paper presents the calculations for a particular coating, which allow to determine the dependences of the thicknesses of dry layers on different reduced metal thicknesses and to obtain relevant correspondences between the calculation results and experimental data.