DESCRIPTION OF LINEAR AND NONLINEAR THERMAL CREEP OF CONCRETE BASED ON RHEOLOGICAL MODEL AND ENERGY THEORY OF NONLINEAR CREEP

This article discusses the isolation of linear and nonlinear components of thermal creep deformations on the basis of the energy theory of nonlinear creep and prolonged strength proposed by V.D. Harlab. For the theoretical description of the thermal creep of concrete, a rheo-logical model with a variable number of elastic and viscous bonds (V.D. Kharlab, I.A. Kupriyanov) was used. Analysis of numerical calculations confirmed the assumption that the nonlinear component of creep is independent of temperature. The results are recommended for use in the design of concrete structures operating in conditions of temperature changes.