The tempered glass is widely used in the buildings because of its good transparence and fire endurance under the protection of the sprinkler.The fire backdraft may occur under the good ventilation condition after the tempered glasses fall apart in fire, which can endanger the human evacuation and fire rescue. By the testing of the surface temperature of the tempered glass exposed to the building fire, the critical temperature of the glass fracture can be acquired and the basis for the

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... and prevention of the fracture of the tempered glass then can be provided, which is useful for the performance-based design of the fire safety. The infrared imaging equipment is firstly used in China for the research on the fire endurance of the tempered glass.