Thermal Behaviour of Steel Columns with Steel Sheet - Mineral Wool Fire Protection

摘要

A product development project was carried out to find a mineral wool fire protection system for steel columns which would meet the requirements corresponding to different fire resistance times. Galvanized steel sheet casing systems containing different combinations of mineral wool of various densities, air gaps and aluminium foils between multiple layers of mineral wool were selected and investigated experimentally to find out the influence of different structural factors on the fire resistance (steel temperatures) of the columns. The efficiency of different protection systems is compared by the aid of steel temperatures of the columns or virtual heat resistances calculated for separate insulation layers or the total protection.