Distressed Hot Mix Asphalt (HMA) pavements are able to be cold recycled to serve as a structural base for higher-quality and longer-lasting HMA overlays. The relatively new technology of foamed bitumen as the recycling agent has been proved effective through field trials and research projects around the world during the late 1990s. Today, contractors have several reliable production solutions to foamed bitumen stabilization. Cold recycling, using foamed bitumen, can be more cost-effective on larger projects where equipment depreciation is amortized over larger material volume. On smaller recycling projects the advantage may still reside with alternative stabilizing additives. Proper planning and pre-construction cost evaluation will determine which material and technology is superior. For the covering abstract of this conference see ITRD number E216511.
Samenvatting