IMPORTANCE OF PERFORMANCE BASED SPECIFICATIONS FOR MATERIALS AND DESIGNS OF PAVEMENTS

Flexible pavements are the most common type of road construction in India, because they allow construction in stages and are economical and labour intensive. They can be made with adequate quality and durability if adequate quality control is applied, performance-related specifications for their design and materials are implemented, and innovative high-performance materials are used. Damage to flexible pavements can be classified broadly into fracture, disintegration, and deformation. The properties and performance of bituminous mixes for flexible pavements are influenced mainly by the rheological properties of bitumen and to a lesser extent by its chemical composition. Several performance studies in India reveal that bituminous surfaces, which used to last up to eight years, now only last up to four years. This may be partly due to some lower quality of bitumen production today, but it is more likely to be because bitumen does not have the properties required to meet today's traffic stresses. This article discusses: (1) present paving specifications in India; (2) the need for performance grade materials and specifications; (3) performance-based bitumen specifications; and (4) high-performance binders. India's Central Road Research Institute (CRRI) now plans to develop bitumen mixes for more durable flexible pavements.

  • Availability:
  • Corporate Authors:

    Indian Roads Congress

    Jamnagar House, Shahjahan Road
    New Delhi,   India  110 011
  • Authors:
    • SIKDAR, P K
  • Publication Date: 1999-8

Language

  • English

Media Info

  • Pagination: p. 35-40
  • Serial:
    • Indian Highways
    • Volume: 27
    • Issue Number: 8
    • Publisher: Indian Roads Congress
    • ISSN: 0376-7256

Subject/Index Terms

Filing Info

  • Accession Number: 00788419
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Mar 3 2000 12:00AM