Reconciling the structural design of bitumen stabilised materials – heuristic versus mechanistic empirical models
Source abstract
Abstract
The use of BSM technology is growing worldwide as a practical, economic and sustainable solution for the rehabilitation of the ageing road network. This paper describes the update of the South African Technical Guideline (TG2) for BSMs, the third edition of which was released in 2020. The paper particularly focusses on the structural design methods, but also discusses the revised mix design procedure, updated DEMAC Material Classification System and the pavement investigation and evaluation guidelines given in TG2 (2020), as these processes and analyses provide the inputs for the structural design. This highlights the strong links between material investigation, classification, mix design and structural design. Two methods of structural design for BSMs have been incorporated, and updated Pavement Number (PN) and a Stellenbosch Design Function for BSMs for use in Mechanistic-Empirical Design. The techniques and data used in the development of these methods are presented. The paper also includes a comparison of both methods by comparing eight pavement structures.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Geotechnical and construction materials studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Pavement Engineering, Stellenbosch University, Stellenbosch, South Africa
Pavement Evaluation and Design, Rubicon Solutions, Johannesburg, South Africa
References (23)
Show source-provided references
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