Asphaltrecycling in the Netherlands Harry Roos VBW-Asfalt
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Asphaltrecycling in the Netherlands
Harry Roos
VBW-Asfalt
Dutch Asphalt Pavement Association
Juni, 2012
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•Developement / historyDevelopement / history
•Facts and figuresFacts and figures
•TechniqueTechnique
•RequirementsRequirements
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Year 2010Year 2010 Production RAPProduction RAP
HMAHMA in HMA in HMA million tons %million tons %SpainSpain 34 34 3 3FranceFrance 39 39 7 7AustriaAustria 8 8 5 5USAUSA 327327 17 17GermanyGermany 45 45 26 26The NetherlandsThe Netherlands 10 10 32 32
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HistoryHistoryFavourable circumstances (1970 -1980)Favourable circumstances (1970 -1980)
-- techniquetechnique-- economyeconomy-- policypolicy
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Circumstances in the NetherlandsCircumstances in the NetherlandsTechniqueTechnique
-- available techniqueavailable technique-- support by the clientsupport by the client-- Dutch standard specificationsDutch standard specifications
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Environmental CircumstancesEnvironmental Circumstances
-- global environmental global environmental awarenessawareness
-- scarcity of quarry materialscarcity of quarry material-- alternative construction alternative construction
materialsmaterials
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Economic CircumstancesEconomic Circumstances
-- oil crisisoil crisis-- high bitumen priceshigh bitumen prices-- return on investmentreturn on investment-- min. 50% reclaimed asphalt in min. 50% reclaimed asphalt in
specsspecs
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SummarisingSummarising
-- accepted technologyaccepted technology-- co-operation client - industryco-operation client - industry-- environmental policyenvironmental policy-- scarcity of natural aggregatesscarcity of natural aggregates-- waste reductionwaste reduction-- oil crisesoil crises
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Today's incentivesToday's incentives
-- Dumping not allowedDumping not allowed-- Economic valueEconomic value-- Mixing plants equippedMixing plants equipped-- Standard technical Standard technical specificationsspecifications-- Green ProcurementGreen Procurement
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ENVIRON-MENTALITYENVIRON-MENTALITY
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Facts and figuresFacts and figures
-- production HMA 8 - 9 million tns/yrproduction HMA 8 - 9 million tns/yr
-- 40 asphalt mixing plants equipped40 asphalt mixing plants equippedfor recyclingfor recycling
-- RAP 3.5 - 4 million tns/yrRAP 3.5 - 4 million tns/yr
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0
20
40
60
80
100
120
1996 1998 2000 2003 2004 2005 2006 2007 2008 2009 2010
%% RAP in HMA % parallel drum% parallel drum
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AvailabilityAvailability
-- right placeright place-- right timeright time-- right quantityright quantity-- right qualityright quality
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Requirements for RAPRequirements for RAP-- reclaimed bitumen qualityreclaimed bitumen quality-- aggregate sizeaggregate size-- aggregate shapeaggregate shape-- no pollutionno pollution-- no tarno tar-- homogeneityhomogeneity
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Quality!Quality!Pavement demolitionPavement demolition
==Preparing valuable materialPreparing valuable material
No Waste!!No Waste!!
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RAP = Reclaimed Asphalt Pavement
Quality test on existing pavement
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RAP = Reclaimed Asphalt Pavement
Cold Milling:
Possibly in layers
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RAP = Reclaimed Asphalt Pavement
Crushing
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Bitumentanks
Ontstoffing
Voordoseursoud asfalt
Voordoseurs nieuwe grondstoffen
Zeefhuis
Fabrieks-vulstof
Voorraadsilo’swarm zand, grind,
steenslag
Weegbak
Mengbak
Ophaalbak
Eindsilowarmasfalt
Warme ladder
Waterdamp
Eigenvulstof
zandgrind steen-slag
zand
Verwarmingstrommeloud asfalt
(paralleltrommel)
Droogtrommelnieuwe grondstoffen
BrandervlamNieuwe grondstoffen Verbrandingsgassen en stof
Oud asfalt
Bitumen
Vulstof Afgevangen zand
Schoorsteen
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Percentage RAP in Mix
Subbase > 50 % (98 %)
Binder 45 % (90 %)
Wearing course 35 % (50 %)
Porous asphalt 30 % (20 %)
Stonemastic asphalt 25 % ( 1 %)
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RequirementsRequirementsfor for
hot mix with reclaimed asphalthot mix with reclaimed asphalt==
hot mix with 100% new materialshot mix with 100% new materials
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Possible solutionPossible solution
Recipe approachRecipe approach
Performance based requirementsPerformance based requirements
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ConclusionsConclusionsSuccess-factorsSuccess-factors-- acceptance of techniqueacceptance of technique-- environ-mentalityenviron-mentality-- co-operationco-operation-- return on investmentreturn on investment-- marketmarket
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