and burned to simulate a situation where concrete is heated by a fire. It takes 2 hours to burn at a temperature of 600 degrees Celsius and then is repaired by casting special high-performance concrete around the burned concrete sample.
And burn it to simulate the event of concrete being heated by a fire, which takes 2 hours to burn at 600 degrees Celsius. Then pour ultra-high performance concrete around the burnt concrete sample for repair.
Sintering simulates the event of fire heating concrete, sintering at 600°C for 2 hours, and then repairing the samples around sintered concrete with ultra-high performance concrete castings.