ПІДВИЩЕННЯ МЕЖІ ВОГНЕСТІЙКОСТІ МЕТАЛЕВИХ КОНСТРУКЦІЙ ВОГНЕЗАХИСНИМИ РЕЧОВИНАМИ

The work is dedicated to increasing fire resistance and durability of metal structures in conditions of high heat by drawing on their surface protective coatings. The original compositions for protective coverings received in high temperatures of maximum contents of temperature stable aluminium and zirconium silicates are developed. An insertion of 1-3 % TiO 2  will facilitate a synthesis of cited above phases and reduce the temperature of their formation on 50-60 degrees. The calculation of fire resistance limits of metal column made of beam № 24 protected by elaborated fire protective substance is made. Fire limit of the centrally compressed protected column is defined to be 3 times higher than that of unprotected one.