Abstract: The invention relates to a process for producing a binder based on bitumen and rubber powder, and comprising as an additive a heavy oil and also a synthetic elastomer. The constituents of the binder are mixed intimately to obtain an initial mixture at a temperature of between 175.degree. and 185.degree. C.; this temperature is maintained with agitation for around two hours, then the temperature of the mixture is lowered by 15.degree. to 20.degree. C. and the binder thus obtained can be kept for up to 10 days without any notable change in its properties.

Abstract: A road reconditioning plant for excavating an existing roadway and using excavated roadway material for forming a renewed roadway, the road reconditioning plant includes; an excavator capable of releasing existing roadway material to a depth of at least about 25 cm while subdividing released material to form aggregate and a chassis for carrying the excavator for advancing movement along the roadway; a drive for advancing the chassis along the existing roadway; an adjustable leveling jack on the chassis remote from the excavator for positioning the excavator to excavate roadway material to a depth of at least about 25 cm; a housing including a blade member spaced from the excavator for forming a segregating chamber wherein released roadway material can pass in a downstream direction beyond the excavator; a blender for receiving aggregate discharge for the excavator, the blender receives cement and water for forming a binder to be blended with aggregate while advanced rearwardly along the chassis in relation to

Abstract: Method of regenerating a worn road surface when using a road surface reconditioning machine.A method characterized in that in a first phase the characteristic features and content of regenerating binder which must be added to obtain a regenerated coating of which the characteristic features correspond to those of the initial surfacing material are determined and then, in a second phase, the worn surfacing material is cut away by means of particular cutting/milling apparatus in order to break up the cut material which is conveyed to the level of the mixing apparatus where regenerating binder is added, the characteristic features of which have been determined during the course of the first phase.