APT Steering Committee Road Pavement Forum

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APT Steering CommitteeRoad Pavement Forum
November 2002E.Sadzik
HVS
MMLS
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APT Steering Committee

• Background
• Approved by RPF in May 2002
• Objectives
• Coordinate and prioritise APT research
• Serve as advisory body to Gautrans HVS programme
• Give comments on APT work proposals and reports

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APT Steering Committee

• 1   M. Henderson               PAWC
• 2   E. Horak                        University
  of Pretoria
• 3   F. Hugo                         ITT
• 4   K. Jenkins                     University of
  Stellenbosch
• 5    R. Lorio                        UWP
  Engineering
• 6   F. Netterberg                Consulting Eng.
  
• 7   S. Oloo                         KZN
• 8 B. Perry CCI
• 9   D. Rossmann               SANRAL
• 10  E. Sadzik                     GAUTRANS
• 11  A. Taute                        SABITA
• 12  H. Theyse                    CSIR
  Transportek    
• 13 B. Verhaeghe              CSIR Transportek
  

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APT Steering Committee

• Objective prioritisation of APT research
• Cold recycling (ETB and FB)
• Asphalt overlays (comparison)
• Suitable materials for intersections
• Upgrading of gravel roads
• With inclusion of
• Vehicle-pavement interaction (impact on design
  and deterioration models)
• Risk assessment (comparative testing)

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APT Steering Committee

• Research Priorities
• Cold recycling (ETB and FB)
• Verification of permanent deformation and fatigue
  models for a greater variety of materials
• Suitable materials for intersections
• Rut resistance of various HMA (combination of mix
  type and polymer modified binder)
• Calibrate wheel tracking test with field
  performance (APT, LTPP)
• Concrete inlays

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APT Steering Committee

• Research Priorities (cont)
• Asphalt overlays
• APT tests on currently used HMA / seal types to
  validate their field performance
• Develop performance models depending on
• Condition of existing surface, deflections,
  climate, type of overlay and design criteria

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APT Steering Committee

• Research Priorities (cont)
• Upgrading of gravel roads
• Investigate innovative techniques and
  technologies e.g.75mm FB surfacing
• Identify cost-effective solutions
• Focus on LIC

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APT Steering Committee

• Objective Give comments on APT work
  proposals
• Work proposals
• Laboratory and HVS testing on N7 comments
  received
• Measurement of moisture sensitivity FB on N7
  (MMLS) pending
• National data base on recycling (ETBFB) -
  pending
• LTPP protocol - pending

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APT Steering Committee

• Objective Coordinate APT research
• Cooperation on recycling (FB) project N7
• SANRAL
• Western Cape
• Gautrans
• Cooperation on guidelines for use of ETB
• SABITA
• Gautrans

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APT Steering Committee

• Objective Serve as advisory body to the
  Gautrans HVS programme
• Identify future HVS project