Asphaltrecycling in the Netherlands

Presentatie over: "Asphaltrecycling in the Netherlands"— Transcript van de presentatie:

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 France Austria USA Germany The Netherlands

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

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

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

22 Performance based requirements
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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