SEVENTH ROAD PAVEMENT FORUM 26 November 2003

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SEVENTH ROAD PAVEMENT FORUM26 November 2003

• FEEDBACK FROM THE
• ASPHALT REINFORCEMENT
• WORKING GROUP

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TERMS OF REFERENCE

• Resolution 2
• An RPF technical group should be formed to
  investigate the development of a national
  guideline / code of practice on asphalt
  reinforcement.
• Proposed members
• CSIR Transportek,
• University and Technikon,
• Clients,
• Industry,
• Producers

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MEMBERS

• CSIR, (Wynand Steyn)
• University (Emile Horak)
• Technikon (Chris de Jager)
• Clients (Mias Wiese, Enrico Fletcher)
• Asphalt Industry (Julian Wise)
• Consultants (Philip Joubert, Rob Brown, Joe
  Grobler)
• Producers (Marco Pauselli, Garth James, Cobus
  Venter)

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SCOPE

• Asphalt Reinforcement, against cracking, rutting
  and strengthening
• All types of interlayers, not fibres
• Asphalt, not surfacing seals (TRH3)
• southern Africa

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NEED

• To enhance the transfer of technology on
  upgrading of damaged roads
• To have best practice documented
• To have as guides part of the toolbox
• To assist new entrants in design/construction
  field

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TYPE OF DOCUMENT

• Immediate need is for guidelines
• Develop into Code of Practice later
• Not Agrément or
• PPGS route at present

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GUIDELINE DOCUMENT

• Do not re-invent the wheel
• Investigate available international guides
• Europe, USA, Australia

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COST 348 action

• Reinforcement of Pavements with Steel Meshes and
  Geosynthetics
• Duration 3 years due to be completed in Jan
  2005
• One of the actions supported by the COST Research
  part of the European Commission Research (16
  Countries)
• Each of four working groups will produce a
  Deliverable Report
• Will be promoted on the Internet.

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COST 348 action

• -To enhance the process of material assessment
  and design
• -To develop appropriate structural design
  methods and measurement techniques to reach the
  status of a generally accepted alternative.
• -Enhance reinforcement technologies
• -Stimulate contacts and transfer of knowledge
• -Produce material testing methods

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PROJECT DATA BASE

• Get SA ducks in a row
• What are success or failure factors?
• Collect essential information in structured way
• Add usefull information where available
• Develop southern African project database
• Add overseas info where appropriate

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PRODUCT X OVERLAYS gt 50 MM
Case Studies
BLI
Y-Max
lt 300
lt 95
A,B,C
300 - 600
95 - 130
D,E
F,G,H
gt 600
gt 130
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PRODUCT X OVERLAYS gt 50 MM
Not Yet Cracked
Already Cracked
MESA
Base Layer Index
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ACTIONS

• Compile Project Info Requirements (Feb 04)
• Complete international guideline review and
  recommend most appropriate if any
• Include 5th RILEM International Conference on
  Cracking in Pavements (5-8 May 2004) (COST
  348)
• Draft contents for guideline document
• Contributions invited on any of above