Flinders Highway Pavement Recycling South Australia (Sep 1991)

CCA Road Note 34 by Cement and Concrete Association

Until the last few years the main use of pavement rehabilitation by recycling the existing pavement by cement stabilisation had been in urban roads administered by Local Government. The existing pavement thicknesses and therefore the depths of pavement recycling in these applications are typically 150—200 mm. Using similar procedures the process is now being extended to roads in urban industrial areas and rural highways where the required depth of recycling is typically not less than 275 mm. The need to stabilise pavements at these greater depths has seen the development of stabilisation techniques and related quality assurance management suited to them. One such project has been on the F)inders Highway near Port Lincoln in South Australia where 12 km of rural highway have been recently rehabilitated in an eight-week period. The required depth of stabilisation was 300 mm. The works were completed by contract in a dedicated quality assurance management environment. This article provides an outline of the successful stabilisation, site management and quality assurance procedures employed. On completion, the speed of the pfocess ang cost Of the recycled pavement including a new seal coat have been shown to be much better than other methods of pavement reconstruction.

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