WHAT IS RETREAD?
Throughout the country there are many coated macadam, grouted, and surface dressed roads which, although the foundations are sound, have become cracked, crazed and deformed. These defects may be corrected by superimposing an overlay of new macadam or by replacing the existing surfacing. Both these methods are costly and in the case of an overlay there is the extra expense of raising footway and kerb levels.
However, as the deterioration of the existing aggregate is normally negligible it can be recoated by the Retread Process and reshaped into a level, skid resistant surface, at reduced inconvenience and cost compared with other methods. The process is an established form of recycling road surfacings and unlike many more recent concepts does not require the use of heat.
It may be equally effective on waterbound, dry-bound, bitumen or tar-bound surfaces. This technique offers the opportunity of improving the camber and thereby the drainage of the road
THE FINISHED PRODUCT
Application Briefly the process consists of scarifying the old road to a suitable depth, breaking down the scarified material to the required size and reshaping. This aggregate is then mixed with a selected class of Retread Emulsion by spraying followed by harrowing. The road is finally surface dressed.
BEFORE AND AFTER IMAGES
Before:
After:
