Transcript TUF-BAR - BP Composites

5522 – 36 Street
Edmonton, Alberta
T6B 3P3
T:780 – 448 – 9338
F:780 – 448 – 9338
[email protected]
1–888–99–REBAR(73227)
• In 1997, Dywidag-Systems
International (DSI) contacted BP
Automation to develop a threaded
fibreglass rebar system.
• In 1999, the company developed
threaded fibreglass manufacturing
equipment.
• In 2000, BP Composites was formed to
supply the mining industry with
fibreglass rebar and rock bolts.
Production Brow, Penobsquis,
New Brunswick
In 1995 the Canadian
Government formed the
Intelligent Sensing for Innovative
Structures (ISIS) to find a
solution to the crumbling
infrastructure of North America.
Consisting of 14 Universities and
22 Researchers with a 15 year
mandate to publish the CSA code
Spalling on bridge girder
Romans are the pioneers of the concrete revolution. Their
structures have lasted close to 2000 years.
Pantheon, Rome; Constructed ~126AD; worlds largest unreinforced dome.
Reinforced Concrete with Steel Rebar is the
cause of the failing infrastructure
Steel rebar has been used since the early
1900’s
Steel expands 10x in volume when it rusts,
and causes concrete to crack and fail
Iron
Iron Oxide
• Epoxy Coated Steel: Corrodes
• Galvanized Steel: Corrodes
• Stainless Steel: Susceptible
Cracking with Epoxy Coated Steel,
19 Year Old Ontario Bridge, MTO
2005
Failure with Stainless Steel,
Roof of 13 Year Old Swimming
Pool Collapses, Switzerland
Cracking with Galvanized Steel,
23 Yr Old Ontario Bridge, MTO 2007
Rusting Stainless Steel in Bridge Install
Anthony Henday, Edmonton AB
Core-samples from Five Bridges using GFRP were analyzed
in High Corrosion Environments, in two studies 5 years apart;
the samples were sent to 4 different laboratories for
evaluation, using different test methods; the bridges were in
service up to 13 years.
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Joffre Bridge, Sherbrooke, QC, 12 years
Crowchild Trail Bridge, Calgary, AB, 13 years (pictured)
Hall's Harbour Wharf, Hall's Harbour, NS, 10 years
Waterloo Creek Bridge, Vancouver Island, BC, 11 years
Chatham Bridge, Chatham, ON, 13 years
• Rigorous testing has concluded:
- 100+ Year Life Expectancy for GFRP Reinforced Structures.
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No Degradation in GFRP Reinforcement
Excellent Bonding
No Debonding
No Microcracking
No Voids
No Glass Transition
No Resin Microcracking
No Glass Fibre Degradation
No Significant Delamination
No Resin Degradation
No Chemical Degradation
• No Hydrolysis
Steel:
20000 cycles
GFRP: 420000 cycles
Lasts 20x Longer under cyclic Loads
• Truck Traffic, Wave Action, Seismic
60 Ton Loading Fixture
A. El-Ragaby , E. F. El-Salakawy and B. Benmokrane
Glass Creep
GFRP not recommended for:
- Pre-Tensioning
- Post-Tensioning
- Dead Loads (max 25% UTS)
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Modulus of Elasticity
- ¼ that of Steel
- Cantilevering Loads
Ultimate Tensile Strength
800
Stress (MPa)
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1000
600
Yield
Point
400
Steel
GFRP
200
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Elongation
- Elongates Linearly 2%
- Not Ductile
0
0
2
4
6
8
Strain (%)
10
12
14
16
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High Embedment Strength
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Kb Factor
- Rough Surface
- Sand Coating
- Crack Width < 0.023 in
- Sand Coating Kb = 0.8
- 20% Less Bar Required
TUF-BAR® Sand Coating
𝑤𝑐𝑟
𝑓𝐹𝑅𝑃 ℎ2
2
=2
𝑘𝑏 𝑑𝑐 + 𝑠/2
𝐸𝐹𝑅𝑃 ℎ1
2
• In 2001, ISIS Canada published
guidelines for building with GFRP
• In 2006, ISIS Canada developed
a Product Specification Manual
for GFRP reinforcement for civil
application.
• In 2007, ISIS encouraged BP Composites
to develop a family of GFRP rebar
suitable for civil infrastructure.
• 2002 CSA code for “Design and
Construction of Building
Components with Fibre-Reinforced
Polymers”
- CSA-S806
• 2006 CSA Highway Bridge Design
Code updated for GFRP
- CSA-S6-06
• 2006 ACI 440 Guide for Structural
Concrete Reinforced with FRP Bars
- ACI 440.1R
• 2009 AASHTO Bridge Design Guide
for GFRP-Reinforced Concrete
Bridge Decks and Traffic Railings
- AASHTO GFRP-1
2010 CSA-S807 Code Specifications
for FRP Rebar:
• Mechanical Properties
• Physical Properties
• Durability Properties
Material Requirements:
• Vinyl Ester Resin
• E-type Glass or E-CR Fibreglass
USA, ACI Equivalent: ACI 440.6R (2008)
Mechanical Properties
(Straight & Bent Bars)
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Cross-Sectional Area
Tensile Strength
Modulus of Elasticity
Ultimate Elongation
Bond Strength
Transverse Shear Strength
Cold Temperature Tensile Properties
Flexural Modulus and Strength
TUF-BAR® Tensile Strength Testing
Physical Properties
1.
2.
Fibre Content
Coefficient of Thermal Expansion
- Longitudinal & Transverse
3. Density
4. Void Content
5. Water Absorption
6. Cure Ratio
7. Glass Transition Temperature
TUF-BAR® Creep Rupture Strength Test
Durability Properties
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Alkali Resistance in High pH Solution
(60C 3 months 14 pH)
With Load
Without Load
Creep
Test Creep at 10,000 Hr
Creep Rupture Strength
Extrapolate Creep failure to 1 million Hr
Must hold >35% UTS @ 1 million Hr
TUF-BAR® Creep Rupture Strength Test
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Minimal Concrete Cover
Fewer Concrete Additives
No Concrete Treatments
No Protective Membranes
No Rebar Coating Repairs
Lightweight
- Lower Transport Costs
- Less Handling
- Less Injuries (WCB/OSHA)
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Fast Installation
- Cuts with Chop Saw or Grinding Disc in Seconds
TUF-BAR® Grid
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Other Features
- Thermal Isolator
- Non-Conductive
- Non-Magnetic
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Sizes #2-#8, 6mm-25mm
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Standard/Custom Lengths
Shapes
Bends
Coils (1km @ 25mm bar)
TUF-BAR® in an MRI Facility
• Canada Green Building Council Member
• TUF-BAR® is 100% recyclable
• TUF-BAR® contributes:
- 6 LEED® Credits in Canada
- 7 LEED® Credits in USA
TUF-BAR® in Pre-fab Bridge Deck Slabs
Black Steel
Price
Corrosion
Susceptible
Stainless Steel
TUF-BAR®
10x Black Steel
2x Black Steel
≃ Galvanized Steel
≃ Epoxy Coated Steel
Susceptible
Non-Susceptible
Weight
1/4 of Steel
Tensile Strength
2x Steel/Stainless
Modulus
200 GPa
200 GPa
40, 60 GPa
Bond Strength
8-11 MPa
8-11 MPa
14 MPa
Thermal Conductivity
Yes
Yes
No
Electrical Conductivity
Yes
Yes
No
Magnetic
Yes
No
No
Composites Innovation Centre
University of Manitoba:
• GFRP 70% cost savings
over 100 years
• Repairs start in 10-15 years
- More expensive as time goes on
Corrosion & Spalling
“If you look at the full life cycle
cost, GFRP is far more costeffective than metallic
reinforcement”
- Dr. Brahim Benmokrane
NSERC Industry Research Chair
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Save Money with GFRP
• Codes are Published
• Live without Corrosion
• 100+ Years Sustainability
BP Composites Ltd.
(T): 780-448-9338
(F): 780-448-9360
1-888-99-REBAR(73227)
[email protected]
Bridge that didn’t use TUF-BAR®