A Revolutionary - Engineers Geoscientists Manitoba• Cement • Aggregate and Concrete • Roofing...
Transcript of A Revolutionary - Engineers Geoscientists Manitoba• Cement • Aggregate and Concrete • Roofing...
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A Revolutionary New Material for New Solutions
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The SolutionLafarge was able to help
the architect transform
his dream…
…to reality!
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The SolutionLafarge was able to help
the architect transform
his dream…
…to reality!
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The Bridge of the Future
p2
p2
p2
D
Lafarge is helping the
FHWA & MIT transform
their vision of the
Bridge of the Future …
to reality!
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The Lafarge Group
• Over €15 billion in sales worldwide
• Over 83,000 people in 75 countries
Products• Cement
• Aggregate and Concrete
• Roofing
• Gypsum
• Specialty Products
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InnovationA major research collaboration resulted in a technological breakthrough.
A new material with a unique combination of superior characteristics:
• ultra-high performance with ductilitystrength, ductility, durability
• easy to use & highly mouldableflowable, dry-cast, form replication
• superior aesthetics & quality surface aspectcolors, textures, surface
Compressive Strength:150 MPa to 200 MPa
Flexural Strength:20 MPa to 50 MPa
Ductility:Greater capacity to deform and support
flexural and tensile loads, even after initial cracking
Abrasion Resistance:Similar to natural rock
Impermeability:Almost no carbonation or penetration of chlorides
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Key points of the Ductal® mix design:
• Ductility
• Synergy of two sizes of fibers
• Grading optimization (modifiedCompactness Theory)
• An efficient Cement-Superplasticizer couple
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0
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0.0 0.5 1.0 1.5 2.0Deflection (mm)
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DuctalHPC 80
Flexural Strength
DuctalHPC
Batimat -French Construction Show
DuctilityGreater capacity to deform andsupport flexural and tensile loads,even after initial cracking!
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Synergy of two sizes of fibers:
Activation of bond microcracking micro-reinforcement
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Shear/ no place for fibers! Modified compact grading
Optimum Mix Modified Mix:
Compactness:®
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Typical Values for Ductal® FM
195235MPaCompressive Strength(75 mm dia. X 150 mm length)
4045MPa
Flexural Strength(40 mm X 40 mm X 160 mm
bending test)
5760GPaE-Modulus
28 days(wet room curing)
3 days(incl. thermal treatment at
90oC for 48 hr)
Ductal FM(2% volume Steel Fibres)
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MASS (WEIGHT) OF BEAMS
lbs/lineal ft. 94 75 313 355
Steel
Pre-stressed ReinforcedConcrete
Equal Load Carrying Capacity
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DURABILITY
02 mmCarbonation
(depth of penetration)
0.020.5X10-12 m2/sChloride ion diffusion
030010-6Post-curing shrinkage
1.22.75Index IAbrasion
(relative volume loss)
100%90%%Freeze-thaw
(residual E-mod after 300 cycles)
Ductal(2% Steel Fibers
90oC Thermal Treatment)
HPC(60 MPa)
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U.S. Army Corp. of Engineers Long Term Exposure Site
Three samples of Ductal installed in 1996EXPOSURE: 500 freeze/thaw cycles and 4500 wet/dry cycles in saturated sea water
August 14, 2002
Treat Island, Maine, USA
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DUCTAL® PROJECTS
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Urban Furniture
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Interior Furnishings
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Sinks, Counters & Tiles
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Decorative
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Architectural Cladding
2.3 m x 1.9 m x 20 mm thickDuctal® FO Acoustical Panels2.3 m x 1.9 m x 20 mm thickPanels cast with rectangular holes. (15mm thickness; holes 15mm x 15mm.)
120 m2 of Ductal® FO Cladding Panels
2.5 m x 1.6 m x 25mm thick
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Security Applications
• Safety Vaults for USA & Canadian Market.
• High Impact Resistant Containers for material storage.
• Impact Resistant Containers for the Military
• Explosion protection wall panels for high Security Buildings
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Industrial Applications
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Deerfoot Meadows – Calgary, AB
OverviewQuantity – 19 Ductal Anchor Blocks
- 1.88 m3 of Ductal
Client: Alberta InfrastructureCompleted – Fall ‘04
Anchor Plates/Blocks
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Foot Bridges
Ecosmart Ramp, Vancouver, BC
Footbridge of Peace, Seoul, Korea
Yamagata Footbridge, Japan
Sherbrooke Footbridge, Quebec
Sakata Mirai Footbridge, Japan
Papatatoe LRT Bridge, NZ
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Highway Bridges
McLean, Virginia
Wapello, Iowa
Washington, DC
NSW, Australia
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Showcase Project:Shawnessy LRT Station
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Shawnessy LRT StationPrecaster: Lafarge (Calgary)Owner: City of CalgaryArchitect: Culham, Pedersen & Valentine (CPV)Ductal Volume: 80 m3
Description: Architectural roof over a pedestrianunloading area.
Advantages: Aesthetics, reduced maintenancelight weight system, fewer pilings,speed of installation, economics
5.62 m
5.1 m 6 m
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Ductal Components
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Forming / Casting / Demolding
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Canopy Production
Canopies Struts
Tie BeamsColumns
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Installing the Canopies
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Installed Canopies
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1-Scale Load-Testing at the U of C
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1-Scale Load-Testing at the U of C
- Full Wind Uplift
- full snow load
At full factored loads, maximum strains were60% of cracking strain
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“Ductal provided the ability to achieve the free-flowing form design of the canopies.”
Shawnessy LRT Station ArchitectEnzo Vicenzino
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Architect’sdream…
…to reality!
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Collaborations with Universities•MIT - 2-D & 3-D modeling.•Ohio University - Pullout Tests for Strand•Iowa State University - Seismic Modeling(Short term, high amplitude low frequency response).•Michigan Technical University - size effects•NY State, Buffalo - Cutting and recycling•U of Calgary - Full Scale Load Testing•Virginia Tech – Punching Shear•Georgia Tech – Full Scale Beam Tests•UNB – Durability @ Treat Is(US Army Corp)•others….Columns, Terminal, Detroit
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The End
Visit our web site at:www.imagineductal.com