Estudo da condutividade térmica em concreto com diferentes densidades

Abstract

The thermal performance of buildings has been studied and improved by professionals in the field in order to offer users a better experience. Given this, the objective of this work is to study the ability of concrete with different densities to conduct heat, through a given thickness, using an artificial source of constant heat. For this, a non-standard test was carried out, which consists of fixing a distance between the heat source and the sample, using a styrofoam panel with the aim of isolating the other faces of the test specimen, measuring the temperatures regularly using a thermal camera. and a rod thermometer. Then, with the data obtained in the test, the time required for the concrete to reach the steady state was observed and, from this, it was possible to calculate the coefficient of thermal conductivity using the Fourier equation. Therefore, the results showed that concrete with lower density had better thermal performance when compared to denser concrete. Thus, it was possible to conclude that the density has influence on the time in which the concrete reaches the steady state, consequently also on the thermal conductivity of the material.