Structural - Mathematical Modeling Of Thermal Conductivity Of Concrete

Abstract

The relevance of energy saving in the construction of residential buildings is directly related to the reliable determination of the estimated heat engineering characteristics of building materials. The concept of structural and mathematical modeling of concrete thermal conductivity is stated, which is based on the methodology of the structural approach and the generalized theory of conductivity. An adequate structural and mathematical model has been developed for calculating the coefficient of thermal conductivity of concrete, taking into account the influence of its structural factors formed at the time of completion, mainly of the process of structure formation. The developed model takes into account the thermophysical properties of concrete components, its macro- and meso-structural features. The calculated data of the practically possible macro-meso-structural factors are presented, which allows one to determine the thermal conductivity coefficient of low-heat-conductive concrete and use the results to approximate the predicted trends in the heat-shielding properties of these concrete in the operational and adaptation period of the building envelope.