In-place recycling and reclamation enable agencies to optimize the value of in-place materials and minimize construction time and traffic flow disruptions, as well as to reduce vehicle emissions from long traffic queues. In-place recycling and reclamation also reduce the number of construction vehicles moving in and out of the construction area and neighbourhood truck traffic. In recent years, petroleum and aggregate economics and supply have increased the need for high-quality, cost-effective alternatives to virgin paving mixtures. Transportation professionals are asking for methods that optimize the value of in-place materials while minimizing traffic congestion and the environmental impact of paving operations. Current in-place recycling processes answer all of these needs. Hot in-place recycling addresses distresses near the surface with the use of one of three hot in-place recycling methods: resurfacing, repaving, and remixing. Distresses in the upper 2 to 4 in. can be minimized using cold in-place recycling. Full-depth reclamation recycles the old asphalt pavement into a stabilized base material that provides good support for the final pavement layers.
Recycling and Reclamation of Asphalt Pavements Using In-Place Methods. National Cooperative Highway Research Program (NCHRP) Synthesis 421. A Synthesis of Highway Practice
2011
85 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Solid Wastes Pollution & Control , Construction Materials, Components, & Equipment , Air Pollution & Control , Asphalt pavements , Recycling , Reclamation , Construction materials , Mixtures , Bituminous concrete , Air pollution control , Asphalt , Waste recycling , Solid wastes , In-place recycling programs , Structural designs , Experimentation , Cost benefits , Case studies