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NINTH ROAD PAVEMENT FORUM 11 May 2005

NINTH ROAD PAVEMENT FORUM 11 May 2005. DEVELOPMENT OF NATIONAL GUIDELINE ON ASPHALT REINFORCEMENT. RECAP - THE NEED. Need identified in Asphalt Reinforcing (AR) Uncertainty on use/benefits of AR Provide : T oolbox for new entrants B est p ractice document for design / construction

jessica-mcgowan
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NINTH ROAD PAVEMENT FORUM 11 May 2005

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  1. NINTH ROAD PAVEMENT FORUM11 May 2005 DEVELOPMENT OF NATIONAL GUIDELINE ON ASPHALT REINFORCEMENT

  2. RECAP - THE NEED • Need identified in Asphalt Reinforcing (AR) • Uncertainty on use/benefits of AR • Provide:Toolboxfor new entrants Best practice document for design/construction • Road Pavement Forum initiated process to address need

  3. RECAP- SCOPE • Covers Asphalt Reinforcement used for: • Resistance against cracking, rutting • Strengthening of asphalt layer • All types of interlayers (not fibres) • Asphalt (not surfacing seals) • southern African region

  4. RECAP- WORKING GROUP • Suppliers 3 • Contractors 2 • Road Owners 2 • Consultants 3 • Research 3

  5. Activities - GUIDELINE DOCUMENT • 1st Draft Document compiled – (Contents) • Internal Review – Scheduled for July 2005 • Decisions: • Publisher / Owner? • Release?

  6. Activities - PROJECT DATABASE • 29 Projects entered into CSIR Database • First entry with ”before and after” information received • Provide control sections where possible • Need more input from industry

  7. Activities - INTERNATIONAL CONTACT • Information gathered from Conferences (e.g. RILEM 2004) • Contact with European Research Project - COST348 • Information shared with other contacts

  8. Activities - HVS TESTING • HVS Asphalt testing programme – Planning in progress • May be possible to include AR sections • Follow-up in progress

  9. WAY FORWARD • Currently: • Complete 1st Draft Guideline • Review Guideline with external inputs • Follow up COST348 and HVS? • Success Factors: • Industry contribution to guideline development • Interested persons contact Work Group

  10. THANK YOU

  11. TYPE OF DOCUMENT • Immediate need is for Guidelines • Can be developed into Code of Practice later • At present, not • Agrément or • PPGS route

  12. DEVELOPMENT OF DOCUMENT • Do not re-invent the wheel • Two path approach: • International Literature / Research review • Southern African Project Database

  13. 1. INTERNATIONAL LITERATURE REVIEW • International Guideline Documents • (e.g. Handbook of Geosynthetics – GMA) • Recent conference proceedings • (e.g. RILEM 2004) • Recent / current research • (e.g. COST 348and Reflex)

  14. 2. PROJECT DATABASE • OBJECTIVES: • What are success or failure factors? • Collect essential information in structured way • Add usefull information where available • Develop southern African project database

  15. 2. PROJECT DATABASE (CONTINUED) • Database developed at CSIR,Transportek • Standardised questionnaires for data collection • Database open to all interested • Use as information for case studies

  16. PROJECT DATABASE

  17. PROJECT DATABASE

  18. PROJECT DATABASE Currently 27 Projects in Database

  19. PROJECT DATABASE

  20. PROJECT DATABASE • Output example from Query of projects • constructed after 2000, • traffic of more than 2000 AADT and • AC thickness of > 30 mm.

  21. GUIDELINE DOCUMENT - CONTENT Functions / Benefits of AR Considerations in selection of AR Types Evaluation of existing pavement condition (e.g. FWD, Crack Activity Meter) Design methods (e.g. Catalogue, Experience, Theoretical) Specification of materials (Geometric & Mechanical properties)

  22. DOCUMENT - CONTENT (CONTINUED) Surface preparation (e.g. patching, seal cracks, leveling course, rut filling) Practical construction issues (e.g. tack coat, overlay construction, overlap, packaging) Quality control and material testing Database of projects Future research subjects

  23. WAY FORWARD • Currently: • In major data / information-gathering phase • Phase should provide valuable inputs to Guidelines • First DraftGuidelines for comment: March 2005 • Success Factors: • Contribution of industry experience to documentation process. • Provide control sections where possible

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