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Maximising Sustainability inConcrete Road ConstructionEUPAVE, the European Concrete PavingAssociation, was formed in 2007 topromote all cement and concrete productsfor transport infrastructure and topublicise to the maximum all technicalinformation related to publications,studies, and worksite visits. The cementand concrete applications include: in situcast concrete, concrete paving blocks,flags and other pre cast items,hydraulically bound base and sub-baselayers, soil improvement and stabilisationand in situ pavement recycling. Alltransport surfaces are the subject ofEUPAVE efforts - from motorways tobicycle paths and from airfield runwaysand railways to safety barriers and noisereducingdevices.www.eupave.euIn 2007-2008, a part of the motorway E34 near Antwerp was rehabilitated witha double-layered CRCP (continuously reinforced concrete pavement). Theoriginal road pavement of 1977 consisted of concrete slabs, laid on a base oflean concrete. Although the slabs were initially dowelled, serious step formingoriginated at the joints. The road became very uncomfortable, particularly on theright-hand lane carrying heavy traffic. In recent years there were also increasingnumbers of cracked slabs that had to be repaired. Even if the number of crackedslabs remained within reason, general renovation became necessary because ofpoor driving comfort.The Roads and Traffic Agency (AWV) of the Flemish Government had drawn up alist of potentially innovative applications for road-building. The use of recycledaggregates in road paving was one of them. For this E34 renovation, it wasdecided to apply two-lift concrete with recycled aggregates in the lower course.Continuously reinforced concrete pavement was chosen, thereby giving the bestguarantees of a long and maintenance-free service life. The technique ofdouble-layered concrete or two-lift paving consists of dividing the concretepavement into a bottom lift of approx. 80 % of the total design thickness, and atop lift of approx. 20 % of the total thickness. The thinner upper course makes iteconomically justifiable to use fine, hard but also more expensive stones.As a result, a high-quality upper course can be obtained with excellent safety anddriving comfort properties. Because the lower course does not reach the surfacethe strict polishing resistance requirement no longer applies, and less noble andcheaper aggregates can be used. This permits the use of recycled aggregates.International Road Federation Innovative Practices for Greener Roads Back to Table of Contents I 23
EUPAVE BelgiumMaximising Sustainability in Concrete Road ConstructionEnvironmental BenefitsContactAfter construction, the surface characteristics wereevaluated. The evenness, measured using a LongitudinalProfile Analyser, was excellent with the exception of somesections where, in the right-hand lane, the profile had tomatch the level of the adjacent old hard shoulder. For thecoefficient of evenness CE 2,5 a maximum value of 35is required, but 90 % of the results were below 25and 70 % below 20. The skid resistance was checkedwith the SCRIM. The transverse friction coefficientmust be at least 0.48. The results varied between 0.60and 0.87 with 84 % of them above 0.70.In terms of rolling noise, a reduction of more than 3dBA was achieved with the two-lift paving techniquecompared to the traditional single-layer exposed aggregateconcrete with a maximum aggregate size of 20 mm.EXPOSED AGGREGATE SURFACELuc RensManaging Director5cm TOP LAYER18cm BOTTOM LAYERCRCPEUPAVEVorstlaan 68, 1170 BrusselsTel : +32 (0)2 645 5255, +32 (0) 479 78 00 21Fax: +32 (0)2 640 0670info@eupave.eu5cm ASPHALT15 to 20cmEXISTING LEAN CONCRETE BASEInternational Road Federation Innovative Practices for Greener Roads Back to Table of Contents I 24
Page 2 and 3: IntroductionUntil relatively recent
Page 4 and 5: 3M Diamond Grade DG³Reflective She
Page 6: AEC is the Asociatión Española de
Page 9: Ammann SwitzerlandGreener Roads Thr
Page 13 and 14: Attica TollwayAchieving Innovation
Page 15 and 16: AximumMarketing Environmentally Sou
Page 17 and 18: CaterpillarThe Caterpillar D7E Trac
Page 19 and 20: Colas FranceDeveloping Silent, Natu
Page 21 and 22: Colas SwitzerlandPromoting the Wide
Page 23 and 24: ECOPATH IndustriesReduction of Road
Page 25: Egnatia OdosEgnatia Motorway Manage
Page 29 and 30: EUROVIACreating New Methods and Mat
Page 31 and 32: International Road FederationThe IR
Page 33 and 34: Kapsch TrafficCom AGIntelligent Ele
Page 35 and 36: MichelinMichelin Fleet SolutionsCon
Page 37 and 38: New Zealand Transport AgencyAssessi
Page 39 and 40: Ooms InternationalRoad Energy Syste
Page 41 and 42: Parsons BrinckerhoffHighway Sustain
Page 43 and 44: Resource International, IncBuilding
Page 45 and 46: Scott WilsonDelivering The Right Hi
Page 47 and 48: SnolineQuickchange Moveable Barrier
Page 49 and 50: SWARCOEco-Design Of Led Traffic Lig
Page 51 and 52: Transpo Industries, Inc.Keeping Run
Page 53 and 54: Volkmann & Rossbach GmbH & Co.KGAmp
Page 55: WSP GroupCombining Human Factors wi

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