DETERMINATION OF HEAT TRANSFER COEFFICIENT FOR THE SOIL MASS IN WINTER CONCRETING PROCESS

Abstract

The article considers the issue of evaluation of one of the most important technological parameters
of winter concreting – the heat transfer coefficient of hardening concrete fencing. The problem
of calculating the heat transfer coefficient of a soil mass is described, and it is concluded that it
is impossible to use standard formulas based only on the theory of thermal conductivity

for its calculation. The problem of calculating the heat transfer coefficient of a soil mass has been
worded, and the methods of mathematical physics and of the theory of solving differential equations
have been used to solve it. By using the standard differential heat transfer equation and having specified
the boundary conditions for its use, as well as using the method of the integral Laplace transform,
a solution of this equation has been obtained. Thus, analytically, a formula has been obtained
for calculating the amount of heat loss of the concrete being held in the soil mass, as well as a formula
for calculating the value of the heat transfer coefficient of the soil mass. It has been shown that
the dimension of the expression for calculating the value of the heat transfer coefficient of the soil
completely coincides with the dimension of the heat transfer coefficient.