This video is a heating demonstration of a concrete block by the halogen line heater condensing type.
Related page:
Aluminum can heating with halogen line heater 
Copy paper heating with halogen line heater 
No.6 Dryness of paints 
Ignition of wood pellets by the Air Blow Heater 
No.4 Curing of gravure offset printing 
Melt the wire solder with the Halogen Point Heater 
Heating demonstration of Holing PET bottle by the Air Blow Heater 
The heating demonstration of Holing Polyethylene bottle by the Air Blow Heater