Home >Documents >Lifecycle Perspective of Tech and Prop of RCA by · PDF file Lifecycle Perspective Lifecycle...

Lifecycle Perspective of Tech and Prop of RCA by · PDF file Lifecycle Perspective Lifecycle...

Date post:07-Feb-2020
Category:
View:4 times
Download:0 times
Share this document with a friend
Transcript:
  • 2010 International Concrete Sustainability Conference, Dubai, UAE 1

    NRMCA Concrete Sustainability ConferenceLifecycle Perspective Lifecycle Perspective ofof

    Technologies and PropertiesTechnologies and PropertiesTechnologies and Properties Technologies and Properties of Recycled Aggregate of Recycled Aggregate ConcreteConcrete in Japanin Japan

    Takafumi NOGUCHI The University of Tokyo [email protected] tokyo.ac.jp

    December 13-14, 2010 – Dubai, UAE

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 2

    NRMCA Concrete Sustainability Conference

    Content

    •• IntroductionIntroduction History of Measures on RecyclingHistory of Measures on Recycling•• History of Measures on RecyclingHistory of Measures on Recycling –– Political MeasuresPolitical Measures –– StandardizationStandardization

    •• History of Recycling TechnologyHistory of Recycling Technology –– Recycling technologies for existing structuresRecycling technologies for existing structures –– Completely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable Concrete

    •• Conclusions Conclusions

    December 13-14, 2010 – Dubai, UAE

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 3

    NRMCA Concrete Sustainability ConferenceEnvironmental Problems in Concrete

    IndustriesIndustries

    •• Global warmingGlobal warming Resource depletionResource depletion•• Resource depletionResource depletion

    •• Waste disposalWaste disposal

    December 13-14, 2010 – Dubai, UAE

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 4

    NRMCA Concrete Sustainability Conference

    Building Related CO2 Emission

    Housing

    construction

    Commercial

    building

    Japan’s total CO2 emission

    1.2 billion

    5% construction

    6% Building

    repair

    1% tons Energy for

    housing

    operationEnergy for

    36%36%

    Other

    industries

    64%

    11% gy

    commercial

    building

    operation

    December 13-14, 2010 – Dubai, UAE

    p

    13%

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 5

    NRMCA Concrete Sustainability Conference

    CO2 Emission from Concrete Industries2

    Portland cement: 1 tonPortland cement: 1 ton

    COCO 0 750 75COCO22: 0.75 ton: 0.75 ton Decarbonation of limestone (60 %)Decarbonation of limestone (60 %) Fossil fuel combustion (30 %)Fossil fuel combustion (30 %)

    Concrete: 1 mConcrete: 1 m33

    COCO22: 0.35 : 0.35 -- 0.45 ton0.45 ton Cement production (0 25 ton)Cement production (0 25 ton)

    December 13-14, 2010 – Dubai, UAE

    Cement production (0.25 ton)Cement production (0.25 ton) Others (0.1 Others (0.1 –– 0.2 ton)0.2 ton)

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 6

    NRMCA Concrete Sustainability Conference

    Resource Input into Construction Industries

    TotalTotal ConstructionConstruction

    Total: 2,000 (million t/year)Total: 2,000 (million t/year) Total: 1,000 (million t/year)Total: 1,000 (million t/year)CONCRETE is the second most widely consumed CONCRETE is the second most widely consumed substances on Earth, after water !substances on Earth, after water !

    OthersOthers“LIQUID STONE:NEW ARCHITECTURE IN CONCRETE”“LIQUID STONE:NEW ARCHITECTURE IN CONCRETE” (National Building Museum in Washington D.C.)(National Building Museum in Washington D.C.)

    ConstructionConstruction ConcreteConcreteWoodWood

    December 13-14, 2010 – Dubai, UAE

    1,000 (million 1,000 (million t/year)t/year) 50%50%

    ConcreteConcrete 500 (million t/year)500 (million t/year) 50%50%SteelSteel

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 7

    NRMCA Concrete Sustainability Conference

    Waste Output from Construction Industries

    Industrial WasteIndustrial Waste Construction WasteConstruction Waste

    Total: 406 (million t/year)Total: 406 (million t/year) Total: 79 (million t/year)Total: 79 (million t/year)

    EnergyEnergyOthersOthers A h lA h lWoodWood OthersOthers

    EnergyEnergy

    AgricultureAgriculture

    PulpPulp

    SteelSteel

    ChemicalChemical Asphalt Asphalt concreteconcreteSludgeSludge

    WoodWood

    ConstructionConstruction 79 ( illi / )79 ( illi / )

    ConcreteConcrete 35 ( illi35 ( illi

    PulpPulp

    December 13-14, 2010 – Dubai, UAE

    79 (million t/year)79 (million t/year) 17%17%

    35 (million 35 (million t/year)t/year) 42%42%

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 8

    NRMCA Concrete Sustainability Conference

    Final Disposal Sites for Waste

    200

    220

    in re a

    General

    Industrial Waste: 412 (million Industrial Waste: 412 (million t/year)t/year)

    180

    200

    e w

    as te

    po sa

    l a r

    io n

    m 3 ) Industrial

    140

    160

    Po ss

    ib le

    na l d

    is p

    (m ill

    i

    120

    19 93

    19 94

    19 95

    19 96

    19 97

    19 98

    19 99

    20 00

    20 01

    20 02

    20 03

    P fi

    December 13-14, 2010 – Dubai, UAE

    Scarcity of residual capacity of final disposal areas

    ResourceResource--recycling recycling societysociety

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 9

    NRMCA Concrete Sustainability Conference

    Content

    •• IntroductionIntroduction History of Measures on RecyclingHistory of Measures on Recycling•• History of Measures on RecyclingHistory of Measures on Recycling –– Political MeasuresPolitical Measures –– StandardizationStandardization

    •• History of Recycling TechnologyHistory of Recycling Technology –– Recycling technologies for existing structuresRecycling technologies for existing structures –– Completely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable Concrete

    •• Conclusions Conclusions

    December 13-14, 2010 – Dubai, UAE

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 10

    NRMCA Concrete Sustainability Conference

    Recycling Ratio of Concrete

    1990 Recycle Disposal

    Ministry of ConstructionMinistry of Construction Action Plan for Construction Action Plan for Construction

    ByBy--productsproducts ‘‘9494

    1995

    ByBy products products 9494 Promotion Plan for Promotion Plan for

    Construction Waste Construction Waste RecyclingRecycling ’’9797

    Basic Law for Establishing aBasic Law for Establishing a

    2005

    2000

    Basic Law for Establishing a Basic Law for Establishing a RecyclingRecycling--based Societybased Society

    Construction Material Recycling ActConstruction Material Recycling Act Law on Promoting Green Law on Promoting Green

    PurchasingPurchasing

    0 10 20 30 40

    Emission of Concrete Lumps (million t)

    2005

    December 13-14, 2010 – Dubai, UAE

    For road For road subbasesubbase For mechanical stabilization For mechanical stabilization

    underground underground

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 11

    NRMCA Concrete Sustainability ConferencePredicted Amount of Future Concrete

    WasteWaste t)

    600

    500 Concrete Concrete productionproduction

    on (

    m ill

    io n

    400

    300

    productionproduction

    ConcretConcretD d fD d f

    Pr od

    uc ti

    o

    200

    100

    ConcretConcret ee wastewaste

    Demand forDemand for road road subbasesubbase Greatest part of

    future aggregate for concrete

    Greatest part of future aggregate for concrete

    0

    1950 2000 2050

    YearImbalance between Recycling

    December 13-14, 2010 – Dubai, UAE

    YearImbalance between supply of concrete

    waste demand for road

    subbase

    Recycling From Quantity-oriented to Quality-oriented

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 12

    NRMCA Concrete Sustainability Conference

    Content

    •• IntroductionIntroduction History of Measures on RecyclingHistory of Measures on Recycling•• History of Measures on RecyclingHistory of Measures on Recycling –– Political MeasuresPolitical Measures –– StandardizationStandardization

    •• History of Recycling TechnologyHistory of Recycling Technology –– Recycling technologies for existing structuresRecycling technologies for existing structures –– Completely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable ConcreteCompletely Recyclable Concrete

    •• Conclusions Conclusions

    December 13-14, 2010 – Dubai, UAE

  • 2010 International Concrete Sustainability Conference, Dubai, UAE 13

    NRMCA Concrete Sustainability Conference

    Standardization of Recycled AggregateStandardization of Recycled Aggregate

    19771977 Building Contractors SocietyBuilding Contractors Society “Draft standard for the use of recycled aggregate and recycled y gg g y

    concrete”

    19941994 Minist

Click here to load reader

Reader Image
Embed Size (px)
Recommended