Prompt This phrase seems out of place Please rephrase to improve clarityDuring the fire test the infrared thermography monitored the temperature of the outer surface of ceiling including the concrete

During the fire test, the infrared thermography monitored the temperature of the outer surface of the ceiling, including the concrete surface temperature, as well as the temperature of water and vapor overflowing from concrete cracks. The infrared images clearly show that the temperature at the concrete cracks is higher due to the high temperature water and vapor overflowing from the cracks. A comparison between the temperature of water and vapor at the cracks obtained from infrared images and the temperature of the concrete surface measured by the thermocouple is shown in Fig. 14. At 30 min, the temperature of water and vapor at the cracks began to rise slowly, while the concrete surface temperature of the ceiling was close to the ambient temperature. At 60 min, the temperature of water and vapor at the concrete cracks rose rapidly, reaching 82.8°C in a short time and remaining at a higher temperature. The temperature change of the ceiling surface monitored by infrared thermography was consistent with the macroscopic test phenomenon on the outer surface of the ceiling. It was observed that water overflowing from the concrete cracks on the ceiling gradually increased at 27 min, and boiling water vapor began to overflow from the concrete cracks on the ceiling at 58 min, as shown in Fig. 5(a) and Fig. 5(d), respectively