Recycling of Porous Bituminous Mixtures

Once flexible pavements reach minimal bearing capacity, their structural rehabilitation is normally undertaken using bituminous mixture overlay. The number of layers and the thickness depend of the existing quality of the pavement and of the required quality determined by the rehabilitation program for a next life period. The rehabilitation of a pavement with a porous bituminous mixture wearing course is usually undertaken without any treatment to increase its bearing capacity. The bearing capacity of this type of mixture can be increased by the use of a grout to fill its voids, increasing its resistance. The new material is produced by spreading a grout over the pavement surface, with the help of rubber scrapers, penetrating the voids of the mixture until it reaches the bottom of the layer. The properties of this material are dependent on void connectivity, in order to allow the grout to flow through them. An adequate viscosity of the grout is essential so as to fill the voids completely. The objective of this paper is to analyze the recycling of porous bituminous mixtures, studying the grout and evaluating new mixture properties in terms of stiffness, fatigue life and permanent deformation.

• 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:
  • Dias, Teresa
  • Pereira, Paulo
  • Pais, Jorge C
• 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: 10p
• Monograph Title: 2005 International Symposium on Pavement Recycling
• Serial:
  • 2005 International Symposium on Pavement Recycling
  • ISSN: 1807-9458

Subject/Index Terms

• TRT Terms: Bearing capacity; Bituminous mixtures; Pavement layers; Pavement performance; Pavements; Recycled materials; Recycling; Rehabilitation; Service life
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01084925
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 28 2008 8:14AM