Asphalt Maintenance and Repair

Asphalt Maintenance & Repair

The life of a parking surface or driveway can be prolonged through good construction and maintenance practices. Good maintenance practices center on keeping water out of the pavement, sub base and subsoil. Maintaining and cleaning ditches and storm drains will extend the life of the asphalt at low cost. Sealing small cracks with bituminous crack sealer prevents water from enlarging cracks through frost weathering or percolating down to the sub base and softening it.

For somewhat more distressed asphalt a chip seal or similar surface treatment may be applied. As the number, width and length of cracks increases, more intensive repairs are needed. In order of generally increasing expense, these include thin asphalt overlays, multicourse overlays, grinding off the top course and overlaying, in-place recycling, or full-depth reconstruction of the asphalt.

It is far less expensive to keep the asphalt in good condition than it is to repair it once it has deteriorated. This is why Good maintenance practices place the priority on preventive maintenance of asphalt in good condition, rather than reconstructing asphalt in poor condition.   In terms of lifetime cost and long term pavement conditions, this will result in better system performance.