Pavement Treatments

Pavement Treatments - BRC used the following pavement treatments.

  • Rip & Reseal - Rip the existing sprayed seal surface and tyne into pavement. Apply a new sprayed seal. Because of local surface defects will make the road rough if apply a straight reseal on top. Hence this is used mainly on high speed rural roads. Will not do this treatment on urban roads. Treatment undertaken to reduce roughness and allow for a smooth ride.
  • Granular Overlay - Rip, reshape and addition of granular pavement material (typically 150mm rule of thumb). Finished off with a Sprayed Seal wearing course. Generally a treatment applied to Rural roads. Pavement failures and/or insufficient cover to subgrade. Where a bituminous seal will not rectify the current defects. Also to fix shape corrections. Where there is insufficent batter widths or the treatment will result in a reduced lane width that is not acceptable to current traffic volumes. Also where there are level limitations in the form of kerb and gutter.
  • Insitu Stabilisation - A two pass operation that involves the addition of chemical add mixtures to the surface, which is then mixed with the underlying pavement (typically up to 200mm in depth). Pavement compacted with a final seal applied. Pavement failures and/or insufficient cover to subgrade. Where a bituminous seal will not rectify the current defects. May involve the addition of extra pavement material. Where services are located within limits of the pavement. Typically rule of thumb is sprayed seal in Rural areas and asphalt in Urban areas.
  • Reconstruction - Total reconstruction of the road segment. In cases where all other treatments are not viable. Also in cases where the road may require widening or realignment or adjustment of levels.
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