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REVISION OF SOUTH AFRICAN PAVEMENT DESIGN METHOD

SEAL MODELLING AND DESIGN. PB/2006/D-1: IMPROVED DAMAGE MODELS FOR BITUMINOUS MATERIALS (PART 2 – THIN SURFACINGS). REVISION OF SOUTH AFRICAN PAVEMENT DESIGN METHOD. Johan Gerber University of Stellenbosch August 2011. Approach to modelling. Modelling scales discussion.

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REVISION OF SOUTH AFRICAN PAVEMENT DESIGN METHOD

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  1. SEAL MODELLING AND DESIGN PB/2006/D-1: IMPROVED DAMAGE MODELS FOR BITUMINOUS MATERIALS (PART 2 – THIN SURFACINGS) REVISION OF SOUTH AFRICAN PAVEMENT DESIGN METHOD Johan Gerber University of Stellenbosch August 2011

  2. Approach to modelling • Modelling scales discussion

  3. Past work (Dr Terence Milne)

  4. Finite element modelling • 3D Viscoelastic macro-scale pavement • Better mesh better output

  5. 2D Modelling has been done • 2D CT-Scan meso-scale model

  6. Acquiring basic modelling skills • Ideal seal structure exercise (2 layers of stone)

  7. Acquiring basic modelling skills • Ideal seal structure exercise (2 layers of stone)

  8. Current progress • Granular base geometry establishment • Extracting in-situ samples

  9. Current progress • Granular base geometry establishment • Extracted sample & representative CT-Scan • Reseal on G5 base

  10. End Thank you

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