Abstract: A method of and an apparatus for heating a road surface, in which hot air controlled to a predetermined temperature is blown against the road surface so as to heat the road surface. The apparatus includes a hot air generator provided with a burner and a thermal control unit, and a duct formed with blowing pores for blowing the hot air against the road surface.

Abstract: A regenerative heating and melting device is disclosed for treating asphalt concrete rubble for the recovery of an asphalt coated aggregate suitable for reuse. The apparatus includes a vertical cylindrical casing, an inlet for hot gas and an outlet for exhaust gas, conveyor means for conveying the rubble to the top of the casing and means for recovering the regenerated paving material from the casing. The internal space of the cylindrical casing is divided into a plurality of tier sections by partition plates. Each of the plates has an opening means to communicate with the adjacent lower tier section. A rotary shaft is provided in the cylindrical casing, the axis of which coincides with the axis of the cylindrical casing and extending through the tier sections and partition plates.