L LAFARGE - whitehouse.gov...• Conservation of natural resources • Concrete performance and...
Transcript of L LAFARGE - whitehouse.gov...• Conservation of natural resources • Concrete performance and...
L LAFARGE
bringing materials to rife
World leader in building materials L LAFARGE
• Operations in 76 countries with 90,000 employees
• World leader in cement, No. 1 in Aggregates; No.3 in Concrete; No.3 in Gypsum
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us CCP Utilization (from ACAA) J!AFARGE
• Utilization of Fly Ash Bulk Powder reached 44%
70,000
60,000
50 ,000
40,000
30,000
2 0 ,000 12,433
10,000
Fly Ash Usage (ODDs MT)
64,502
3,298 2,432 1,120 1,185 1,098
Cement Sub. Structural Fills Waste Soils/Rd Raw Mining Other Total Usage Production Stabilization Stabilization Feed/Blended
Cement
• Utilization of other CCPs reached 35%
Other CCP Usage (ODOs MT)
Total ')~~~~~~~~~~~177 n5 49,540 ~~~~~~~~~~3Z~~====~ FBC Ash !:r"t155
FGD Other ~ 2,222
DryFGD ~1644 j. Usage ; , Ia Production
~ 15,060WetFGD ) -"~735~~~~~~
FGD Gypsum 8.372 11 ,159 ;
Boiler Slag ~11~J9o
~~~~~~ ________ __________~________ ~________~~mAsh )~~~~~6;.~'626 16,420 -. -. , 10,000 20,000 30,000 40,000 50,000 60,000
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L LAFARGE
Lafarge Utilizes CCP's in the Following Applications:
• Portland Cement Replacement in Concrete
• Treatment of Soils and Base Materials to Improve Engineering Properties (Under Pavements & Buildihg Slabs)
• Ingredient in the Manufacture of Portland Cement (Raw Feed)
• Underground Mine Stabilization
• Ingredient in the Manufacture of Gypsum Wallboard
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Lafarge Annual CCP Utilization-Primary Applications L LAFARGE
• Volumes for North America (K-MT)
Coal Ash Coal Ash Coal Ash Coal Ash Syn Gyp Region Concrete/Cement Rel!lacement Soil/Base Treatment Raw Feed Underground Mine Stabilization Wallboard TOTAL
Lakes & Seaway 700 100 300 500 1600 River 600 500 200 300 1600 East 200 200 West 500 100 100 700
Gypsum 2000 2000 1800 700 800 800 2000 6100
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Portland Cement Replacement in Concrete
~FARGE
• Why it's utilized:
• Economics (reduces the cost/yd cost of concrete)
• Reduces the carbon footprint of concrete (less C02/yd)
• Available locally
• Performance • Necessary ingredient in High Performance Concrete
~ ie. High rise const, thinner bridge sections, etc.
~ Can allow poor quality aggregates found locally to be utilized
• Durability • Reduces permeability of concrete
• Improves sulfate resistance
• Improves resistance to Alkali Aggregate Reaction
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L LAFARGE
Implications of Hazardous Waste Designation on Cement Replacement
• Specifiers would not want it in their buildings, projects
• Hampering sustainable development (LEED credits)
• Not in my schools, churches, stadiums!
• DOT's would procure other more costly materials for their projects
• Additional C02 generation at cement plants to produce add'i ope to fill binder needs for these projects
• Marketers through end users would not want the risk associated with the product
• Increased Tort exposure
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Treatment of Soils and Base Materials
• 10-20% Self - Cementing fly ash mixed with soil/base material (Very different from structural fill)
• Mixture is adjusted to proper moisture content for fly ash hydration and maximum density and then compacted
• Cementing action resulting from hydration of fly ash improves engineering properties of the soil or base material
• Treated areas are subsequently covered with a pavement or building slab
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Self Cementing Fly Ash -Types of Soil/Base TreatmentL LAFARGE
• Soils
• Clays - used in lieu of manufactured lime to reduce shrink/swell potential
• Granular Soils - used in lieu of Portland Cement to increase strength of soil
• Base Materials
• Natural Aggregates - used in lieu of Portland Cement to increase strength of the aggregate base
• Recycled Asphalt Pavement - used in lieu of asphalt emulsions and other bituminous binders to cement and increase strength of pulverized asphalt pavement
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Treatment of Soils and Base Materials using
Self Cementing Class C Fly Ash
L LAFARGE
Benefits of Self-Cementing Fly Ash for Soil and Base Treatment
• Improves Engineering properties of soils and base materials (strength, shrink swell, etc.)
• Economics of improving properties of in-situ soils and therefore not having to remove and replace with select virgin materials
• Ability to recycle in place existing deteriorated asphalt pavements already paid for with tax dollars
• Less C02 generated - less hauling of virgin soils/aggregates, less Portland Cement and manufactured lime production
• Conserving natural resources
• Specified by state DOT's
• State utilization/implementation plans work (ie. WI, MN, MO)
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Soil/Base Treatment vs. Geo-Tech/Structural FillL LAFARGE
• Soil Treatment
• Self cementing fly ash required
• Soil base material treated with 10-20% fly ash
• Strength is developed through cementitious hydration reaction
• Covered with pavement or building slab
• Structural Fill
• Non-cementing fly ash may be used
• 100% fly ash is used as a soil replacement
• No strength development if non-cementing fly ash is used
• May not be covered with pavement or building slab
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Ingredient in the Manufacture of Portland Cement (Raw Feed) L LAFARGE
• Why it's utilized
• Primarily used as an alumina source (important ingredient in the recipe)
• Often get added fuel benefit that fly ash still contains unburned carbon
• Utilizing the fly ash often results in less cement kiln dust wasted
• Previously used mined aggregates increased plant voc's
• Conserve natural resources
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r FARGE Lafarge Alpena Plant
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L LAFARGE
Implications of Hazardous Waste Designation on CCP's in the Manufacture of Portland Cement
• Cement manufacturers would not want to utilize as an ingredient in their product
• Additional costs to mine other natural materials
• Additional vac's emitted with these other natural materials
• Additional solid fuel consumption due to loss of fuel benefit of fly ash
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Underground Mine StabilizationL LAFARGE
• Where it's utilized
• Underground limestone mines with the appropriate hydrological engineering properties
• Why it's utilized
• To stabilize mine from future collapse
• To get property in position to support surface development
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ClIENT: WAAGE HOftI'H .ulERICA INC.
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PROJEC1 NO, DAl£ DAA'IW-K: NO. 16530222 JAN .2007 2
Drilling of Injection Holes L LAFARGE
Implications of Hazardous Waste Designation on L LAFARGE Underground Mine Stabilization
• Underground Mine Stabilization would end
• Mines would not be stabilized and risk future collapse
• No surface development would take place forgoing future tax revenues
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Underground Mine Stabilization vs. Surface Mine Reclamation#;AFARGE
• Underground Stabilization • Surface Reclamation
• Appropriate geo-hydrological • Site conditions vary conditions significantly
• Surface water runoff not an • Surface runoff of concern Issue
• No fugitive dusting • Significant potential for fugitive dusting
• Self cementing fly ash used • Non-cementing fly ash most develops significant strength often used
• Potential for future mine • Mine collapse is not an issue collapse is eliminated
• Mine stabilization necessary for • Opportunities for surface future surface development development without ash
reclamation, golf course, lake, etc.
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L LAFARGE
Ingredient in Wallboard Manufacture
Why FGD Gypsum
• FGD Gypsum is a Consistent, High Quality Substitute for Natural Gypsum
• Conserves Natural Resources
• Provides a Beneficial Outlet for Recycled Material
• Provides Our Customers and Their Contractors with LEED Certifiable Products
• FGD Production Has Led to Lafarge Building New, Modern Plants in Rural Areas Creating High Paying Jobs
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L LAFARGE
Ingredient in Wallboard Manufacture
A Hazardous Waste Designation Would
• Create a Negative Impression in the Minds of Consumers that Wallboard Products Are Dangerous ·
• Homeowners Whose Houses Already Contain Wallboard Manufactured with FGD Could Suffer Perceived Loss in the Value of their Homes
• A Perfect Example of Beneficial Use of a Recycled Material Would be Eliminated
• Elevate Product Liability (Insurance Costs)
• Tort Exposure
• Effectively Eliminate 100% of Lafarge's 2009 Capacity
• Hundreds of Jobs Would Be Lost
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-_._-_. ..... -.--. - . -."._--
Wallboard Plants
L LAFARGE
Silver Grove, Kentucky
Buchanan, New York
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L LAFARGE Summary Takeaways
• A hazardous designation of CCP's would have a negative impact on:
• C02 generation - increase carbon footprint
• Sustainable development initiatives
• Conservation of natural resources
• Concrete performance and durability
• Costs - to manufacture concrete, manufacture cement, manufacture wallboard, stabilize sub bases
• Utility/Marketer/End User perception and liability concerns
• Utility would need to construct additional landfills to handle increased disposal volumes
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