Sustainability and Pavement Preservation · Hot Mix Asphalt (HMA) High modulus HMA HMA with 15% RAP...
Transcript of Sustainability and Pavement Preservation · Hot Mix Asphalt (HMA) High modulus HMA HMA with 15% RAP...
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Sustainability and PavementPreservation
Francois CHAIGNON
COLAS Inc.
VP Quality Assurance & Technical Support
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The Agenda
Quick presentation of COLAS SAR & D in COLAS
Ecologiciel
In place recycling & treatment
How to implement innovations or new techniques
Conclusions
COLAS (COLd ASphalt) in 2008
ID CardTurn Over 12.8 Billion Euros / 19 Billion $
74 000 personnel in 40 countries8000 in North America
Aggregates 118 MtHMA 52 MtEmulsion 1.5 Mt
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Breakdown of Group activity
Roads
1,472
Building materials
7,712
Civilengineering,Pipes, Mains
901
Safety,Signing
291
Waterproofing
517
Building
404
Railways
376
2,489
(66.1%) (12.6%)
(21.3%)
Concessions:16.7% Cofiroute
Adelac (A41)Mars (Reims tramway)
in millions of €
110,000 projects around the world
1,400 profit centers in 40+ countries
ComorosMayotte
MadagascarReunion IslandMauritius
Kenya
NewCaledonia
India
Canada
Greenland
Alaska(U.S.A.) Iceland
Guadeloupe
French Guiana
China
Martinique Thailand
Indonesia
Vietnam
United Kingdom
Romania
Czech RepublicPolandIreland
Finland
Isle of Man
Djibouti
United States
France
Gabon
South Africa
Namibia
HungaryAustria
GermanyBelgium
Zambia
Morocco
Denmark
Estonia
Algeria
Slovakia
Benin
Switzerland
Colas Groupbusiness units
SouthKorea
Malaysia
Research and Development
Applied research network:
• 1,000 engineers, research specialistsand technicians worldwide
• 250 in North America
• 1 Campus for Science and Techniques,certified ISO 9001 and ISO 14000
European Approach
More and More Performance based compared to theUSA
Innovations are part of the business
Some owners promote it
Patents, trademarks,…
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Environment is part of our business
Thin and ultra thin overlayNo more tar use even for fuel resistant propertiesNoise abatements systems
QuarriesHMA plantsEmulsion plants
Recycling10
Positive actions
What do we do?
Step by stepContractor versus marketRecycling (no paper tools, RAP, PCC,…)Ambassadors in every company in North AmericaCars policyTracking of energy (fuel, gas, natural gas,…)
Training to save energy (moisture in ACP plant)12
How to evaluate the effect of recycling?
2003Paper on the environmental road for the future
Comparisons between techniques
PIACR Durban
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0 200 400 600 800 1 000 1 200 1 400
Hot Mix Asphalt (HMA)
High modulus HMA
HMA with 15% RAP
Crushed aggregate 0-20 mm
Aggregate 0-112 mm
Cement Concrete
Continuous reinforced concrete
Stabilized materials emulsion +cement
Stabilized materials emulsion
Crushed in place concrete slab(rubblizing)
Reclaimed or milled materials
Energy in MJ par Tonne
Energy Consumption for the Manufacturingand placement of Main Road Technologies
600
90
1100
100
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0 20 40 60 80 100 120 140 160 180 200 220 240 260
Hot Mix Asphalt (HMA)
High modulus HMA
HMA with 15% RAP
Crushed aggregate 0-20 mm
Aggregate 0-112 mm
Cement Concrete
Continuous reinforced concrete
Stabilized materials emulsion +cement
Stabilized materials emulsion
Crushed in place concrete slab(rubblizing)
Reclaimed or milled materials
GHG Emissions CO2 eq kg/tonne
GHG Emissions during Manufacture andPlacement of Main Road Technologies
50
10
180
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How to evaluate the effect of recycling?
2006Internal software ECOLOGICIEL
Eco alternativesOptimization of RAPCO2 eq
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Energy Consumption in MJ per m2For the construction of the Pavementfor 100,000 AADT over 30 years
0 100 200 300 400 500 600 700 800 900
Concrete slab
Reinforced CS
HMA
Stabilization emulsion + HMA
Stabilization Em + Cem +HMA
Rubblizing + HMA
MJ/m2 of pavement
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GHG Emission in C02eq per m2For the construction of the Pavementfor 100,000 AADT over 30 years
0 20 40 60 80 100 120 140
Concrete slab
Reinforced CS
HMA
Stabilization emulsion + HMA
Stabilization Em + Cem +HMA
Rubblizing + HMA
kG of CO2 / m2 of pavement
Energy Efficiency and InnovativeConstruction Practices
What do we do?
Step by stepAnalyze road structures
Paper done in 2003 PIACR in DurbanThe environmental road of the futureRecycling in place is the best technique
EcologicielCalculation per m2 of two criteriaCO2 and Energy consumption
Per ton of HMA applied
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GHG emission per pavement structure in equivalent CO2 (kg/m²)
0 5 10 15 20 25 30 35 40 45 50
Structure 1
Structure 2
Structure 3
Binders Aggregates Mix manufacture Transport Laying
1. Virgin HMA2. 25%RAP HMA3. 25% RAP WMA
Another example
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Comparison of Greenhouse Gas Emissions
-5 0 5 10 15
Vegecol Fibredec
Vegecol Green
Vegecol Red
Vegecol Buff
Vegecol Black
Conventional
Equivalent CO2, kg/m2
BinderAggregateUpstream transportManufactureDownstream transportLaying
First approaches
Eco alternativesAlternatives represent 5-8% of the tendersUsing a design software and properties of componentsTo show the gain in GHG per sy on a job
The owner must be involved
How to implement innovations or new techniques
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How to implement innovations or newtechniques?
In EuropeCreate the needs
Contest tendersPerformance based tenderTechnical response to issuesCharter for innovations with funding
In CanadaValue engineering (after the tender)Specific demands to answer issues5-7 years warrantee projects (design included) per m2Promote actively a technique (environmentally friendly)
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How to implement innovations or newtechniques?
In Europe and elsewhereIndustry promote also R&D labs,….Long term commitment in a new technique
High investment (CIR, FDR, …)Difficult to invest for one job
Training to various PP techniquesPerformance based contracts
Technical monitoringTrainingTraining
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Green LITES Labelling – NYSDOT9/25/08
Green LITES Project Design CertificationProgramRecognizing Outstanding Leadership InTransportation and EnvironmentalSustainabilitySeptember 2008
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Certification Program for NYSDOT DesignsMeeting Criteria for Sustainable TransportationInfrastructure using Environmentally FriendlyPractices
Industry Response - HMA
Leading America in Recycling
Warm Mix Asphalt
Quiet Pavement
Porous Pavement
Lower GHG & fuel
Perpetual Pavement
Industry Response – AEMA
Emulsion techniquesmay be handled safelyno odors, fumes, smoke or dustpreserve the environment
protects air qualityrecyclable
low cost techniquesquick application timelow energy consumption
many pavement preservation techniques are emulsion-based
Industry Response – ISSA
ISSA Outlook“Environmentalists,taxpayers and legislatorswill be pleased to knowthat ISSA membercontractors areresponsible for makingtheir roads last longer,keeping them safer, andrequiring the use of fewerraw materials”.
Industry Response - ARRA
ARRA techniquesmost environmental friendlyflexible pavement rehabilitationtechnique.reuse existing non-renewablematerialheating of material is notrequiredhaulage of material on or offsite is not required, i.e. lessdisturbance to traffic
Pavement Preservation
The Right treatment, to the Right road at the Right time
“long-term strategy thatenhances pavementperformance by using anintegrated cost-effective setof practices that extendpavement life, improve safetyand meet motoristexpectations”
Conclusions
Environment should be more than permitsIncluded in the pre tender or engineering approachConsultants?
Numerous initiatives in the USAIn place recycling should be more used!Promotion of innovations / training (DOT and Industry)
Industry needs long term commitmentQuality must be there
Needs for the road networksBudget
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