Due to financial constraints, the City of Prospect chose to use reclamite treatments to extend the life of the existing hot mix surfaces. The resulting extension of road surface life provided savings that allowed Council to treat roads that would have been omitted under a traditional resurfacing budget and road works approach. Over the last 10 years, rejuvenation has been observed within the City of Prospect to extend surface life, which reinforces the views of numerous researchers who maintain that reclamite lowers the viscosity of the asphalt binder, reduces oxidation of the surface, and increases the durability of the asphalt binder. In the 1990s Council embraced an additional approach to gain extra surface life, by using fine gap graded hot mix with reduced voids. Furthermore, the use of Bitumate material for pavement base construction has provided Council with numerous benefits in pavement replacement in brownfield situations. Reduced pavement thicknesses have minimised problems with existing services. The construction sequencing using Bitumate has also reduced dust, allowed recycling (and hence reduced the demand for raw materials), and limited the problems usually associated with silt runoff and the exposure of the subgrade during works. (a) For the covering entry of this conference, please see ITRD abstract no. E217099.
Samenvatting