Back analysis of alternative materials used in roads

Since the 1990s the issue of road construction with wastes and secondary materials has led to various studies and programmes aiming at clarifying its technical, economic and environmental feasibility. Indeed, alternative materials used within the road structure are submitted, for long term periods, to mechanical and thermal stresses, soaking and drying effects, both of which are responsible for physical and chemical changes. Consequently, for the same kind of road application, the behaviour of an alternative material can be strongly different from one place to another according to the local conditions. Although it is a crucial point, back analysis of roads made of alternative materials has not yet really been achieved. As today very few data at road scale are available, a set of French examples was collected and studied. The analysis of these cases is performed in order to allow for proposing typical use scenarios, considering both the material reactivity and the use conditions. 17 cases documented with reports and articles were obtained. Among them, both classical and experimental roads were found, providing mechanical and / or environmental results. The analysis of each case was carried out thanks to a specification sheet describing the road structure, the material, the local factors and the mechanical and environmental responses of the material and of the structure. The content and use of this specification sheet is illustrated through the description of some contrasted cases. For the covering abstract see ITRD E145817

  • Authors:
    • FRANCIOS, D
    • JULLIEN, A
    • DURAND, C
    • KERZREHO, J -
    • LEGRET, M
  • Publication Date: 2006

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01155357
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Apr 23 2010 11:03AM