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

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Presentatie over: "Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt Dutch Asphalt Pavement Association Juni, 2012."— Transcript van de presentatie:

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

2 Developement / historyDevelopement / history Facts and figuresFacts and figures TechniqueTechnique RequirementsRequirements

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

4 History Favourable circumstances ( ) -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 million tns/yr -40 asphalt mixing plants equipped for recycling -RAP 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 Bitumentanks Ontstoffing Voordoseurs oud asfalt Voordoseurs nieuwe grondstoffen Zeefhuis Fabrieks- vulstof Voorraadsilo’s warm zand, grind, steenslag Weegbak Mengbak Ophaalbak Eindsilo warm asfalt Warme ladder Waterdamp Eigen vulstof zandgrindsteen- slag zand Verwarmingstrommel oud asfalt (paralleltrommel) Droogtrommel nieuwe grondstoffen BrandervlamNieuwe grondstoffenVerbrandingsgassen en stof Oud asfalt Bitumen VulstofAfgevangen zand Schoorsteen

20 Percentage RAP in Mix Subbase >50 %(98 %) Binder45 %(90 %) Wearing course35 %(50 %) Porous asphalt30 %(20 %) Stonemastic asphalt25 %( 1 %)

21 Requirementsfor hot mix with reclaimed asphalt = hot mix with 100% new materials

22 Possible solution Recipe approach Performance based requirements

23 ConclusionsSuccess-factors -acceptance of technique -environ-mentality -co-operation -return on investment -market

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