Martec’s Approach to Road Maintenance for Sustainable Pavements through Hot In-Place Recycling Technology

The sustainable life-cycle performance and cost effective preservation of the world’s road networks is an increasing challenge with aging infrastructure, insufficient funding of maintenance, and increasing growth of heavy vehicle traffic. Hot in-place recycling (HIR) of functionally deteriorated, but still structurally sound, asphalt pavements is a very cost competitive alternative process, of equivalent quality and performance, with less road-user disruption, to the common hot-mix asphalt overlay and milling/hot-mix asphalt filling processes. The Martec AR2000 Super Recycler HIR process is based on a recirculating forced hot-air with low-level radiant heating, processing (hot milling), post heating, drying, mixing, paving, and compaction system. This Martec AR2000 Super Recycler third generation HIR system effectively deals with the recycling depth, heater efficiency and effectiveness, speed and productivity, emissions, and processing uniformity problems associated with previous second generation HIR systems. The Martec self-propelled, diesel fueled, one-pass, continuous equipment (traveling asphalt recycling plant), which minimizes emissions without overheating the recycled asphalt concrete or degradation of the aggregate, has been shown to be cost-effective, time-saving, and environment-friendly (emission control, total reuse of old asphalt concrete, and reduced trucking) for a wide range of projects and asphalt surface course types (conventional, Superpave and open friction courses) from local roads to expressways. Monitoring of Martec HIR projects, particularly the very busy Ontario Highway 401, has shown good performance, better than second generation HIR, microsurfacing, and milling/filling with new or recycled hot-mix asphalt. With the use of more long-life (‘perpetual’) asphalt pavements, and the recent recognition of top-down cracking surface distress, HIR should have an increasing role in asphalt pavement renewal. This will also involve associated asphalt technology advances such as Superpave, polymer modification, rejuvenator characterization and selection, and performance evaluation of the mix, in an overall systems approach to optimized HIR.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18079458
• Corporate Authors:

  Universidade Presbiteriana Mackenzie

  Rua da Consolacao, 930
  , Sao Paulo  Brazil 
• Authors:
  • Joharifard, Mostafa
  • Kaplun, Marina
  • Emery, John
• Conference:
  • 2005 International Symposium on Pavement Recycling
  • Location: Sao Paulo , Brazil
  • Date: 2005-31-4 to 2005-31-6
• Publication Date: 2005

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References; Tables;
• Pagination: 14p
• Monograph Title: 2005 International Symposium on Pavement Recycling
• Serial:
  • 2005 International Symposium on Pavement Recycling
  • ISSN: 1807-9458

Subject/Index Terms

• TRT Terms: Highway maintenance; Hot mix asphalt; In place density; Maintenance practices; Milling; Pavement maintenance; Pavement performance; Recycled materials; Recycling; Superpave
• Uncontrolled Terms: Mix in place method
• Subject Areas: Design; Highways; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01085001
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 28 2008 8:14AM