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Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt

Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt Dutch Asphalt Pavement Association Juni, 2012. Developement / history Facts and figures Technique Requirements. Year 2010 Production RAP HMA in HMA

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Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt

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  1. Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt Dutch Asphalt Pavement Association Juni, 2012

  2. Developement / history • Facts and figures • Technique • Requirements

  3. Year 2010 Production RAP HMA in HMA million tons % Spain 34 3 France 39 7 Austria 8 5 USA 327 17 Germany 45 26 The Netherlands 10 32

  4. History Favourable circumstances (1970 -1980) - technique - economy - policy

  5. Circumstances in the Netherlands Technique - available technique - support by the client - Dutch standard specifications

  6. Environmental Circumstances - global environmental awareness - scarcity of quarry material - alternative construction materials

  7. Economic Circumstances - oil crisis - high bitumen prices - return on investment - min. 50% reclaimed asphalt in specs

  8. Summarising - accepted technology - co-operation client - industry - environmental policy - scarcity of natural aggregates - waste reduction - oil crises

  9. Today's incentives • - Dumping not allowed • - Economic value • - Mixing plants equipped • - Standard technical specifications • - Green Procurement

  10. ENVIRON-MENTALITY

  11. Facts and figures • - production HMA 8 - 9 million tns/yr • - 40 asphalt mixing plants equipped • for recycling • - RAP 3.5 - 4 million tns/yr

  12. % RAP in HMA % parallel drum %

  13. Availability - right place - right time - right quantity - right quality

  14. Requirements for RAP - reclaimed bitumen quality - aggregate size - aggregate shape - no pollution - no tar - homogeneity

  15. Quality! Pavement demolition = Preparing valuable material No Waste!!

  16. RAP = Reclaimed Asphalt Pavement Quality test on existing pavement

  17. RAP = Reclaimed Asphalt Pavement Cold Milling: Possibly in layers

  18. RAP = Reclaimed Asphalt Pavement Crushing

  19. Nieuwe grondstoffen Bitumen Verbrandingsgassen en stof Brandervlam Oud asfalt Vulstof Afgevangen zand Waterdamp Eigen vulstof Fabrieks- vulstof Schoorsteen Warme ladder Ontstoffing Zeefhuis Bitumentanks Voorraadsilo’s warm zand, grind, steenslag Voordoseurs oud asfalt Verwarmingstrommel oud asfalt (paralleltrommel) Eindsilo warm asfalt Weegbak Mengbak Voordoseurs nieuwe grondstoffen Droogtrommel nieuwe grondstoffen zand grind steen- slag zand Ophaalbak

  20. Percentage RAP in Mix Subbase > 50 % (98 %) Binder 45 % (90 %) Wearing course 35 % (50 %) Porous asphalt 30 % (20 %) Stonemastic asphalt 25 % ( 1 %)

  21. Requirements for hot mix with reclaimed asphalt = hot mix with 100% new materials

  22. Possible solution Recipe approach Performance based requirements

  23. Conclusions Success-factors - acceptance of technique - environ-mentality - co-operation - return on investment - market

  24. recycling

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