CCA Road Note 14 by Cement and Concrete Association
Many Local Government authorities in Australia are finding themselves in the position where roads constructed many years ago are now showing signs of distress. This can be due to a deterioration in the riding surface, a loss pf structural capacity in the pavement itself or, as is often the case, a combination of both. The technique of rehabilitating (or recycling) flexible pavements by cement stabilisation can have considerable cost and other advantages over alternative methods of reconstruction or maintenance. In this recycling process the pavements are structurally upgraded and their riding qualities restored. The existing pavement materials, including bituminous or asphalt surfacing, are scarified, pulverized cement treated. The existing material is thereby re-used, no waste is created and usually no new materials other than cement and water need to be brought to the site. Recycling is particularly applicable in urban areas where it is quick, and minimises interference to underground services and surface levels. Streets can be re-opened to traffic at the end of each day's work; during the day, access to properties can usually be maintained
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