Processing of functional and structural pavement properties during the initial assessment phase of a project level rehabilitation design project

The South African series of documents “Technical Recommendations for Highways” Number 12 deals with the rehabilitation of flexible road pavements. The basic approach to such investigations was already established in 1983 and remained basically entrenched through many upgrades of the document. In short a project level rehabilitation design project should, at least, consist of the following phases: Initial Assessment, Detailed Assessment, Rehabilitation Design, and Life-cycle cost comparison of applicable rehabilitation options. It follows that the successful completion of the Initial Assessment forms the foundation of cost-effective rehabilitation recommendations. All objectives of the Initial Assessment should be achieved with confidence by the design engineer. This paper describes an approach recommended to optimise the first stage processing of the measured functional and structural pavement properties to assist in the identification of uniform pavement sections based on inherent bearing capacity. Adjacent sections with clear differences in inherent bearing capacity are identified by distinguishing between “relatively good”, “relatively average” and “relatively poor” pavement sections, using the road under investigation as the reference in terms of inherent bearing capacity. This approach greatly enhances the identification of uniform pavement sections which invariable leads to the optimisation of different identified uniform pavement sections and hence, rehabilitation needs.

Language

  • English

Media Info

  • Pagination: 11p
  • Monograph Title: 11th Conference on Asphalt Pavements for Southern Africa: CAPSA15, 16-19 August 2015, Sun City, South Africa

Subject/Index Terms

Filing Info

  • Accession Number: 01597095
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Apr 22 2016 11:14AM