Microsurfacing Urban Pavements

by David K. Hein, Principal Pavements Engineer; John Emery Geotechnical Engineering Ltd.,  1, 109 Woodbine Downs Blvd., Etobicoke, Ontario M9W 6Y1, Canada,
John J. Emery, Pres.; John Emery Geotechnical Engineering Ltd.,  1, 109 Woodbine Downs Blvd., Etobicoke, Ontario M9W 6Y1, Canada,
Romualdo D'Ippolito, Manager; Contracted Maintenance, Municipality of Metropolitan Toronto, Toronto, Canada,


Serial Information: Civil Engineering—ASCE, 1994, Vol. 64, Issue 5, Pg. 55-57


Document Type: Feature article

Abstract: A European maintenance technique called microsurfacing can add years to the service life of cracked, ravelled pavements--with minimal interruption to traffic and for less than half the cost of conventional rehabilitation methods. In September 1992, Metro Toronto selected a 2.5 km, four lane section of Morningside Drive, a major arterial roadway, as a microsurfacing trial section. The most recent measurements, taken about a year after microsurfacing placement, show that the current condition of the pavement is very good. Microsurfacing filled the pavement surface cracks, ruts and ravelled areas, resulting in a smooth roadway surface and improved the ride quality of the pavement by about 15%. Frictional properties of the pavement were improved by almost 30%.

Subject Headings: Cracking | Pavements | Rehabilitation | Surface roughness | Technology transfer

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