Tata Steel Slide LCA Bridges 1 Presentation title, change View >> Header & Footer

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Title slide

Presentation title Author name

Bauke Bonnema

Tata Steel

Duurzaamheids Seminar BmS

LCA Bruggen

Tata Steel Slide LCA Bridges 2 LCA bridges

Agenda

2

1 Introduction

2 Preconditions LCA project

3 LCA Analysis

4 Results

5 Summary & conclusions

6 Next steps

Index slide

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Introduction §  2009: NL target by 2015 : 100% GPP

(Duurzaam Inkopen)

§  Infra structure tool : DuboCalc

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2009 bridge study by Agentschap NL § Fibrecore + DSM

§ Comparison Steel, Concrete, Plastic composite

steel concrete plastic composite

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Penetration plastic composite bridges/lock doors

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Example bridges Plastic Fibre re-enforced

§  Bicycle bridges

§  Length 17 m

§  Width 2,5 m

§  Traffic bridges : fixed + movable

§  Length /span 12 m

§  Width 11 m

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Locks

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Example Lock doors

§  Wilhelminakanaal Tilburg(2015):

§  Doors: 12,5 x 6,2 m

§  Ter Apel (2013)

§  : Doors 5 x 3,6 m

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Review 2009 by Tata Steel + Bouwen met Staal

§ Significant errors in 2009 study:

§ Weight Steel design 2-3 x too high (600 kg/m2 vs 180-230 kg/m2)

§  Life span steel 50 year vs plastic composite 100 years

§ Wrong LCA data steel

New Study by Dutch government (Agentschap NL) §  input by all material branches (timber , concrete, steel, plastic composite)

§  3rd party peer review :

§  Structural design by BAM

§  LCA data by NIBE

§  RWS

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Pre conditions All material branches invited

2 types bridge:

§  Bicycle bridge

§  Medium traffic bridge

Method:

§  SBK-Bepalingsmethode Milieupresta-tie Gebouwen en GWW-werken ( SBK-Bepalingsmethode).

§  Based on NEN 80065 en ISO 14040/44.

§  1 score: de MilieuKostenIndicator (MKI)

Data :

§  Nationale Milieudatabase.

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§  11 Environmental indicators

§  MKI= Milieu Kosten Indicator= Shadow costs (comparable ReCiPe)

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LCA boundaries

§  Total life cycle

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§  Results:

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Weight §  Bicycle Bridge:

§  Steel lowest weight,

§  >twice as low as timber,

§  slightly lower compared to plastic

§  8 x lower compared to concrete

§  Traffic Bridge:

§  No timber option

§  No optimization of foundations

§  Steel lowest weight,

§  slightly lower compared to plastic

weight  bridges BicycleFoundation   bridge total  (ton) (ton) (ton)

concrete 23,7 47,5 71,2steel 0,6 5,6 6,2timber 9,0 12,3 21,3plastic 0,6 5,7 6,3

weight  bridges TrafficFoundation   bridge total  (ton) (ton) (ton)

concrete 127,9 369,8 497,7steel 127,9 62,3 190,2timber pm pm pmplastic 127,9 63,9 191,8

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Bicycle bridge

Carbon footprint CO2

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Traffic/Road bridge

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Impact Coating • Construction phase=welding • Transport phase steel low weight • Impact foundation

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•  Direction product improvement •  GWP + •  Acidification/eutrohication + •  ecotox +/-

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Traffic Bridges

Optimize Foundation

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Impact maintenance (coating)

§  Maintenance based on recommendations OGOS (Opdrachtgeversoverleg Staalconserveren),

§  NAM/Shell, Gasunie, Prorail, Tata Steel , Defensie/Marine, Provincie Zuid Holland en Gemeentewerken Rotterdam , RWS)

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PR

§  LCA Study published on the Dutch Government website

§  TS/BmS NL + UK press release

§  Circulation report to all steel players in the construction sector: fabricators and steel stockists

§  Construction Magazines articles

§  Presentation to EU Independent Steel Promotion Organizations

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Cobouw

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PR via Sustainability Construction network

4 dec : Presentation to Independent Promotion

Organizations(IPO’s) :

§  Bauforum Stahl (Germ)

§  Construir Acier (FR)

§  InfoSteel (Belg),

§  SBI (Sweden),

§  etc.

Steel Network Sustainable

Construction Charter

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Summary & Conclusions §  Importance to be involved in LCA studies/

benchmarking for direction of product improvement / development

§  Important to take into account full LCA (including recycling benefits)

§ Steel: low weight (6-8x lower vs concrete) 2x lower vs timber and comparable with plastic composite

§ CO2 footprint steel low vs competitors § Coating high impact, so important to have

realistic maintenance schedule § Steel best LCA, hence lowest

Environmental Footprint for traffic bridges .

§ Download LCA Report :

§  http://www.bouwenmetstaal.nl/nieuws/staal-scoort-goed-in-lca-vergelijk

§  www.tatasteelbouw.nl

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‘Thanks for your attention Do you have any questions?

Together we make the difference

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