THE TEMPERATURE FIELD OF MASSIVE CONSTRUCTIONS CAUSED BY INTENSIVE HEATING

Abstract

In this paper non stationary temperature fields in massive constructions during their heating are researched. A case, when a massive construction is heated on the surface by the environment with stable temperature is examined. During modelling of heating process the boundary conditions of the third kind were taken into account. Using Laplass transformation, the analytical expressions for research of temperature field depending on the thermophysical parameters of construction materials were received. Non stationary temperature field and temperature gradient in metal, concrete and brick constructions, depending on time and heat exchange intensity were researched. It was demonstrated that thermophysical parameters and heat exchange intensity have significant impact on temperature, temperature gradient indices and size of conductive heat current flowing through construction surface.