When concrete is dried at elevated temperatures, distribution of temperature and moisture in concrete is formed immediately. These gradients change at every moment. In this paper, a mathematical model was presented to describe the drying process of concrete heated at elevated temperatures. Furthermore, a series of tests was carried out in which concrete and mortar cylinders of two different water-cement ratios were heated up to 80, 110, 150, and 200℃. These results of tests were analyzed by means of the mathematical model. As a result, it is shown that it is possible to analyze the water diffusion process of concrete, which involved the gradient of temperature, by using the same parameters even if the test conditions are different.
