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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

Scientific & Technical CampusSouth West of Paris

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

Some examples of products

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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

What about recycling?

Cold in place recycling

RAP

Recycling centers (PCC, ballast, …)

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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

Per ton of HMA applied

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1. 1 ½” HMA+ 5” CIR2. 3 ½” HMA

3. 3 ½ “ HMA + 6” GB

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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Initiatives

Washington State

New York State

LEED for Building

Green Highway

PPP26

GREEN ROADS

GREEN ROADS

GREEN ROADS

GREEN ROADS

GREEN ROADS

Green LITES Labelling – NYSDOT9/25/08

Green LITES Project Design CertificationProgramRecognizing Outstanding Leadership InTransportation and EnvironmentalSustainabilitySeptember 2008

* * * * * * *

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 - Concrete

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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Conclusions

Vegetal binders at 250F FDR in the UK

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Conclusions

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