Inverted Pavements Technique Using Local Natural Aggregate

Sardinia has a major mining history that holds considerable importance in Italian mining economy. Sardinian mining companies that up to 2005 resulted active and registered in the trade register of the chamber of commerce are 241. Considering the need to improve performance, optimize the use of resources, budget constraints, maintenance cost, energy efficiency, the use of natural aggregates available in the region has been investigated in order to sustain and make the most of local natural available resources in the field of road construction. The main goal is to limit the exploitation of natural aggregates normally used in road construction industry, thus contributing to reduction of both energy and environmental loss. For this reason South African technical procedures were studied. South African inverted pavement technique is a widely used method of road construction that allows a considerable saving in terms of thickness of hot mix asphalt layers, as well as overall cost of the infrastructure. The research focused the attention on the evaluation of using Sardinian available granular materials for the construction of Inverted pavement according to the South African regulations. In this paper chemical and physical-mechanical properties of the available materials were analyzed and the results were compared with those of the South African rocks. The results of the study made it possible to identify the design criteria to enhance the commitment of these natural resources through the maximization of their mechanical performance.

• Record URL:
  • https://proceedings-seoul2015.piarc.org/ressources/files/4/IP0459-Contu-E.pdf
• Availability:
  • Find a library where document is available. Order URL: https://www.piarc.org/en/order-library/25346-en-Proceedings%20of%20the%20XXVth%20World%20Road%20Congress%20-%20Seoul.htm
• Supplemental Notes:
  • Abstract reprinted with permission of the World Road Association – PIARC.
• Corporate Authors:

  World Road Association (PIARC)

  La Grande Arche, Paroi Nord, Niveau 5
  F-92055 La Defense Cedex,   France 
• Authors:
  • Contu, A
  • Etzi, A
• Conference:
  • 25th World Road Congress
  • Location: Seoul , Korea, South
  • Date: 2015-11-3 to 2015-11-7
• Publication Date: 2015

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: 8p
• Monograph Title: Proceedings of the 25th World Road Congress - Seoul 2015: Roads and Mobility - Creating New Value from Transport

Subject/Index Terms

• TRT Terms: Chemical properties; Cost effectiveness; Hot mix asphalt; Local materials; Mechanical properties; Mining; Natural aggregates; Pavement design; Physical properties; Road construction; Rocks
• Geographic Terms: Sardinia (Italy); South Africa
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 01689130
• Record Type: Publication
• ISBN: 9782840604235
• Files: TRIS
• Created Date: Dec 20 2018 2:56PM