Renewing the surface of a road

When the surface of a road is judged to be be too damaged to be continue to be patched, the new options come under the heading of renewal

The two renewal options are :

• Road re-sealing
• Road Renewal

Road Re-Sealing

Road re-sealing (or surface renewal) happens when the road pavement (foundation) is in good condition, but the surface has deteriorated to a point where it requires replacement.

It generally involves spraying hot bitumen over the existing surface, quickly tipping a layer of stone on top and rolling the stone into the bitumen.

The placement of a new asphalt layer on the road segment can also be used.

Road Renewal (Pavement Renewal)

‘Road Renewal’ happens when the road has reached the end of its life.

The most common road renewal technique that Orange City Council uses is an extension of heavy patching called Pavement Rehabilitation.

Pavement rehabilitation or 'Stabilising' uses the same process of heavy patching, except that on the whole of the road :

• the remaining surface is removed and
• the pavement gravel is pulverised by a road reclaimer machine.
• a binder is added for strength, and the pavement is watered and re-compacted
• a surface seal of either asphalt or sprayed seal is applied.