About the Congress

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About the Congress. Held in Barcelona, SpainOver 1,000 delegates from 44 countries252 papers, 30 presentedPlenary, poster session

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About the Congress

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2. About the Congress Held in Barcelona, Spain Over 1,000 delegates from 44 countries 252 papers, 30 presented Plenary, poster session & speakers corner Day 1: General Management Seminar Days 2-3: Technical Congress

3. About the Organisers European Asphalt Pavement Association (EAPA) European industry association Represents manufacturers & contractors Membership of 24 countries Links with associations in the USA (NAPA), Canada (OHMPA), Japan (JRCA) and SA (Sabita) Members produce 300 million tonnes of HMA per annum

4. About the Organisers European Bitumen Association (Eurobitume) represent the European producers of refined bituminous products 16 company members & 5 national association members 90% of all bitumen sold in Europe produced by members

5. General Management Seminar Strategies and scenarios for the future of the asphalt and bitumen industries Future opportunities for the construction industry Mastering of transport growth HSE Strategies for performance & competitivety Management of networks PPPs Changing business environment

6. General Management Seminar Mastering of transport growth Freight transport to grow by 50% and passenger transport by 20% over the period 1998-2010 (GDP growth of 3%) Current transport infrastructure system strongly biased towards road transport System will be unable to cope with such increases in traffic May undermine economic growth Negative effects on pollution, congestion, traffic hazards

7. Changes in modal share of land transport modes

8. Mastering of transport growth Recommendations: Optimisation of network usage Promotion of the use of competitive alternatives to road transport Application of the principle of “polluter pays” Impact of changes in the economy (E-economy & oil price increases) not well understood Optimisation: taking advantage of existing capacities Promotion: liberalisation of rail transport and promotion of inland waterwaysOptimisation: taking advantage of existing capacities Promotion: liberalisation of rail transport and promotion of inland waterways

9. General Management Seminar Environment, Health & Safety “People do not want to see us, hear us and smell us” Mike Acott, NAPA Statements made regarding bituminous & tar products: Bitumen is inert & 100% recyclable No increased risk of cancer amongst asphalt workers All coal tar based products need to be removed from industry …see us (requiring improved efficiency and productivity, reduced road-user delay costs and the location of the plant as a good neighbour) …hear us (requiring reduced noise levels during production and construction, and selection on noise-reducing wearing courses) …and smell us (reduction of fume emissions and the move towards warm mixes)…see us (requiring improved efficiency and productivity, reduced road-user delay costs and the location of the plant as a good neighbour) …hear us (requiring reduced noise levels during production and construction, and selection on noise-reducing wearing courses) …and smell us (reduction of fume emissions and the move towards warm mixes)

10. General Management Seminar Management of road networks: Clear vision & direction An understanding of customers & stakeholder needs Translation of these into organisational activities Prioritisation and optimisation tools & techniques Key performance indicators

11. Management of road networks Key is to focus on and satisfying five road user requirements: Safety Road system reliability Comfort & low stress Efficiency Price & levels of service Safety: Coordination of activities within a fit-for-purpose safety management system, providing balance between mobility & safety Reliability: provide real time information to road users on road works, accidents, congestion Comfort relates to riding quality – low stress relates to good traffic flow Efficiency: management of traffic, innovative construction techniques, and most effective utilisation of current road assetsSafety: Coordination of activities within a fit-for-purpose safety management system, providing balance between mobility & safety Reliability: provide real time information to road users on road works, accidents, congestion Comfort relates to riding quality – low stress relates to good traffic flow Efficiency: management of traffic, innovative construction techniques, and most effective utilisation of current road assets

12. Technical Congress Bituminous binders Europe not yet ready to implement PG system Various papers: strong correlation between PG classification & traditional indicators For PMBs, significantly more work required to come up with reliable specifications

14. Bituminous binders Use of ZSV to rank rutting behaviour of binders (far better indicator than SHRP’s G*/sind) (Desmazes et al) CEN specifications for flash point (Fabb) Importance of microscopy and storage stability to ensure homogeneity of PMBs (Wegen et al)

15. Performance-related Binder Properties For rut resistance: Rheological properties at high temp (complex modulus, Australian viscosity test, ZSV and R&B softening pt) For cracking resistance as a result of binder ageing: Ageing resistance after short- and long-term ageing (modification of RTFOT) For structural strength: Rheological properties (complex modulus) For manufacturing & application: Viscosity vs temp properties and storage stability Consensus was reached on the binder properties that would influence the performance requirements of HMA. These are:Consensus was reached on the binder properties that would influence the performance requirements of HMA. These are:

16. Technical Congress Hot-Mix Asphalt Few papers contained novel information or provided new direction Fabb: Modification of methylene-blue test for assessing adhesion properties Brown & Scholz: No consensus on short-term & long-term ageing protocols

17. Hot-Mix Asphalt Paper by Decker: No universally accepted procedure for performance evaluation of mixes in the field or laboratory Supports wheel-tracking tests to assess rutting SMA used successfully on heavy-trafficked roads Recommends that restricted zone be eliminated from AASHTO specifications Difficulty in achieving densities if thickness is less than 3x nominal aggregate size

18. Technical Congress Health, Safety & Environment A number of useful papers Bolk & van der Zwam: thermal conversion of tar-contaminated asphalt integrated into the asphalt production process in combination with energy recovery and re-use of minerals Bowen & de Groot: Polycyclic Aromatic Hydrocarbons (PAHs) concentration in leach water from bitumens well below surface water limits in force in several European countries

19. HSE Paper by Koenders et al: Growing interest in the use of cold and warm mixes to conserve energy and reduce emission Warm aggregate (100-120C) mixed with soft grade of bitumen and a hard bitumen (powder, foam or emulsion) enabling compaction at 80-90C

20. Full report available on: www.csir.co.za/transportek/2rpf.htm

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