A high temperature test is carried out on concrete specimens embedded in a temperature sensor under fire.The propagation and distribution of temperature in concrete when the specimens are exposed to fire on one face or three faces is studied.On the basis of experiments

ANSYS is used to simulate the temperature field of concrete specimens

and the numerical simulation results are consistent with the experimental results.The results of this study show that under the two fire conditions

a temperature platform will appear on the temperature rise curve when the internal temperature of the concrete reaches about 100℃or so

at the same time water vapor produced on the surface of the specimen.The growth of temperature with time inside the concrete is similar

but the temperature is different.Moreover

the difference of temperature at different heights is different.At the same time

the temperature values of concrete specimens at different heights is different

this shows that there is a time difference in the temperature transfer along the height of the cross sections.