environmental benefits of cold-in-place recycling in wisconsin · 2018-06-06 · environmental...

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AngelaPakes,PE,LEEDAPandMorganSanger,GreenAssociateReneeOlley andTuncerEdil

Presentationto2017TransportationResearchBoardSummerWorkshop

Duluth,MN- July20,2017

RecycledMaterialsResourceCenterattheUniversityofWisconsin-Madison

EnvironmentalBenefitsofCold-in-PlaceRecyclingin

Wisconsin

Agenda■ CurrentAggregateuseinRoadConstruction

■ ConventionalMillandOverlayMethodvs.Cold-in-PlaceRecycling

■ ResearchMethods– NineCaseStudies– LifeCycleAssessments

■ IndividualProjectExample:STH13

■ EnvironmentalSavings– PercentReductions– CumulativeSavings– SavingsPredictions

9/8/17 RecycledMaterialsResourceCenterattheUniversityofWisconsin-Madison 2

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680Mt/yr ofvirginaggregateusedin

roadconstruction

Mining Transport Construction Transport Disposal

[a]

RecognizedQualitativebenefitsofCIR

Reducesnon-renewable,virginmaterialsandtransportation.


Economical

EnvironmentalSocial

Extendsthelifeoftheroadway

[b][b]

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ConstructionComparison

■ Millexistingroadway

■ Haultonearestasphaltplant

■ Pavehotmixasphaltlayer(4in)

■ Millexistingroadway

■ Crushandsortrecycledasphaltpavement

■ Mixwithstabilizingagent

■ PaveCIR

■ CIRCure(1-14days)

■ Pavehotmixasphaltlayer(2-3.5in)


ConventionalMillandOverlay Cold-in-PlaceRecycling

CaseStudies

CTHH(ReedsburgtoWisconsinDells)

STH13(MedfordtoWestboro)

STH27(SpartatoBlackRiverFalls)

STH48(GrantsburgtoFrederic)

STH48(RiceLaketoBirchwood)

STH64(GilmantoMedford)

STH72(EllsworthtoElmwood)

STH95(BlairtoMerrillan)

STH187(ShioctontoNorthCountyLine)


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SummaryofProjectInformation


ProjectMOLHMAThickness(inches)

CIRBaseThickness(inches)

CIRHMAThickness(inches)

RoadWidth(ft)

ProjectLength(miles)

HaulingDistance(miles)

Single- orMulti-UnitRecyclingTrain

CTHH 4.5 4 3.5 30 9.5 5.3 Multi

STH13 4 4 2.25 30 5.64 11.6 Multi

STH27 4 4 2.25 30 8.99 8.7 Single

STH48(RiceLake) 4 3 2 30 8.10 10.3 Multi

STH48(Grantsburg) 4 4 2.25 24 12.5 4.3 Multi

STH64 4 4 2.25 30 4.46 3.7 Multi

STH72 4 4 2.25 30 4.63 18.3 Multi

STH95 4 4 2.5 30 4.42 24.4 Multi

STH187 4 3 2.5 30 9.84 21.3 Multi

Multi-UnitRecyclingTrain(8projects)


Single-UnitRecyclingTrain(1project)

[MathyConstruction,2016]

[LACountyDepartmentofPublicWorks]

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■ CreatedbytheConsortiumonGreenDesignandManufacturingfromtheUniversityofCalifornia-Berkeley(2007),sponsoredbyRMRC

■ ScopeofImpactAnalysis– InitialConstruction– MaintenanceConstruction– End-of-lifeAnalysis

■ ComponentsofImpactAnalysis– MaterialProduction– MaterialTransportation– Process(Construction)


TheWisconsinprojectswereevaluatedas

Maintenanceconstruction.

LifeCycleAssessment:PaLATEPavementLife-cycleAssessmentToolforEnvironmentalandEconomicEffects

LifeCycleAssessment


DefineScopeofAssessment

EnergyConsumption

(kWh)

CarbonDioxideEmissions(tons)

WaterConsumption

(tons)

TakeInventory

QuantityofMaterialsUsed

EquipmentandEquipment

Specifications

CompleteImpact

Assessment

MillandOverlay

Cold-in-PlaceRecycling

InterpretResults

PercentReductions

CumulativeSavings

SavingsPredictions

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Assumptions■ MOLprojectshad4-4.5inchesofHMAoverlay.


Assumptions■ MOLprojectshad4inchesofHMAoverlay.

■ MixdesignisthesamefortheMOLandCIRprocessesforeachproject.


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■ MixdesignisthesamefortheMOLandCIRprocessesforeachproject.■ HaulingdistancefromthemidpointofeachprojecttotheclosestHMA

plant.




plant.

■ Watertruckswerenotincludedinanalysis.


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plant.

■ Watertruckswerenotincludedinanalysis.■ Allprojectsusingamulti-unitrecyclingtrainwereassumedtousethe

sameequipment.


ProjectID 1610-03-62

ConstructionYear 2016

County Taylor

Contractor(CIR) WK

Contractor(MOL) Mathy

ProjectLength(miles) 5.64

HaulingDistance(miles) 11.6

RoadWidth(feet) 30

MillandOverlayHMAThickness(inches) 4

ColdIn-PlaceRecyclingThickness(inches) 4

ColdIn-PlaceRecyclingHMAThickness(inches) 2.25

RAPHauledAwayduringCIR(CY) 5,811

Binder(%) 6.3


STH13(MedfordtoWestboro)

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STH13inTaylorCounty§ 5.6-mileprojectfrom

MedfordtoWestboro§ Underconstructionin2016

byWKandMathy§ 4inchesofCIRunder2.25

inchesofnewHMAoverlay§ 11.6-milehaulingdistance§ Multi-unitrecyclingtrain

20-22%ReductioninEnvironmentalImpacts


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Environmentalsavingsbyproject

ProjectEnergyConsumption

[kWh]

WaterConsumption

[tons]

CarbonDioxide

Emissions[tons]

CTHH 1,109,699 1.0 211

STH13 2,008,621 2.4 411

STH27 2,030,254 1.8 395

STH48RiceLake 3,930,466 5.1 820

STH48Grantsburg 8,394,554 11.0 1,738

STH64 3,013,623 5.2 676

STH72 1,042,297 1.1 214

STH95 1,200,412 1.2 250

STH187 1,141,070 1.0 239

Total 23,871,000 29.7 4,955



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y=0.7522xR²=0.7777

0200400600800

100012001400160018002000

0 500 1000 1500 2000 2500

CO2Savings[ton

s]

Normalized HMAReduction[CY/miles]

CO2 SavingsProjection

y=0.0047xR²=0.7622

0

2

4

6

8

10

12

0 500 1000 1500 2000 2500

WaterSavings[tons]


WaterSavingsProjection

y=3620.6xR²=0.7832

0

1000000

2000000

3000000

4000000

5000000

6000000

7000000

8000000

9000000

0 500 1000 1500 2000 2500

EnergySavings[kW

h]


EnergySavingsProjection

ProjectSavingsPredictionsAllProjects


Futurepredictionscanbemadewithroadwidth,length,reductioninHMAand

haulingdistance

H

27 27

H H

27

TotalEnvironmental Savings68RoadMiles

30tonsofwater158Bathtubs


2,183U.S.Households

956Cars 4,955tonsofCO2

23,871,001kWh[c]

[d]

[e]

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Thankyou!

Questions?


Thankyou!

environmental benefits of cold-in-place recycling in wisconsin · 2018-06-06 · environmental...

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