Modified bitumens: looking afresh

Traditional pavements constructed with neat bituminous binders are not able to cope with ever increasing traffic volume, increasing trends of axle loads (overloading), higher tire pressure and extreme climactic conditions and showing early signs of deterioration, leading to premature pavement failure. They require frequent maintenance to maintain the same performance level and, thus, result in higher maintenance cost, as well as road user cost, limited performance, short service life, and higher life cycle cost. To mitigate these problems, several types of measures may be effective; namely, improved design, improved and optimal use of materials, and more effective construction methods. Binder modification is a major breakthrough for improving the rheological and mechanical characteristics of neat bitumen in order to reduce its temperature susceptibility and improve its resistance to pavement distresses and, thus, enhance the performance, durability, and service life of bituminous pavements and overlays. In this paper, it is aimed to discuss all these aspects of modified bitumen in view of current developments to that highway engineers should understand, analyze by own and utilized this material optimally and economically with increased levels of confidence in their works in order to construct a pavement with higher performance and service life, least maintenance cost, least road closures and inconvenience to road users, and lower life cycle cost.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1790571
• Supplemental Notes:
  • Abstract reprinted with permission from the publisher.
• Authors:
  • Garg, Sanjay
• Publication Date: 2012-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 37-51
• Serial:
  • Indian Highways
  • Volume: 40
  • Issue Number: 8
  • Publisher: Indian Roads Congress
  • ISSN: 0376-7256

Subject/Index Terms

• TRT Terms: Bitumen; Life cycle costing; Optimization; Pavement performance; Rheological properties; Service life
• Uncontrolled Terms: Modified asphalt
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01444483
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: Aug 28 2012 8:59AM