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Infrastructure Needs, Applications, and Pathways to Adoption
ARPA-E Extremely Durable Cementitious Materials Workshop April 10-11, 2018 – Dallas, TX
Ben Graybeal, Ph.D., P.E.Team Leader – Bridge Engineering ResearchU.S. Federal Highway Administration202-493-3122 | [email protected]
April 2018 2 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
April 2018 3 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
April 2018 4 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
April 2018 5 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
April 2018 6 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
April 2018 7 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Clearly there is a NEEDClearly there are many APPLICATIONS
To address this challenge, we must use APPROPRIATE MATERIALS as part
of APPROPRIATE SYSTEMS that are tailored to the anticipated
environmental stressors and the anticipated service lives.
April 2018 8 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Clearly there is a NEEDClearly there are many APPLICATIONS
To address this challenge, we must focus on both new construction and
on rehabilitation of existing constructed facilities.
April 2018 9 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Clearly there is a NEEDClearly there are many APPLICATIONS
Novel “concretes” can be part of the solution…
…but only if they offer a clear advantage while being adoptable
into existing practices.
April 2018 10 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC from FHWA’s Perspective
• ARPA-E Extremely Durable Cementitious Materials Workshop • April 10-11, 2018 – Dallas, TX
Ben Graybeal, Ph.D., P.E.Team Leader – Bridge Engineering ResearchU.S. Federal Highway Administration202-493-3122 | [email protected]
April 2018 11 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?
April 2018 12 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?Fiber Reinforcement
Supplementary Cementitious Materials
Particle PackingTheory
Superplasticizers
Nist.gov American Coal Ash Association
April 2018 13 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?
• FHWA−UHPC is a cementitious composite material composed of
an optimized gradation of granular constituents, a water-to-cementitious materials ratio less than 0.25, and a high percentage of discontinuous internal fiber reinforcement. The mechanical properties of UHPC include compressive strength greater than 21.7 ksi (150 MPa) and sustained post-cracking tensile strength greater than 0.72 ksi(5 MPa).
April 2018 14 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?
Highly durable, strain-hardening concrete
April 2018 15 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?
Micro-Reinforced Concrete
April 2018 16 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
What is Ultra-High Performance Concrete?
Exceptionally ResilientCementitious Composite
April 2018 17 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Example Composition of a UHPC
Constituent Amount (lb/yd3) Amount (kg/m3)Portland Cement 1331 790Silica Fume 334 198Fly Ash (Class F) 324 192Fine Basalt 1923 1141Steel Fibers 199 118Superplasticizer 47 28Water 246 146
* Wille and Boisvert-Cotulio report titled “Development of Non-ProprietaryUHPC for Use in the Highway Bridge Sector” (FHWA NTIS-PB2013-100587)
April 2018 18 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Availability of UHPC-Class MaterialsExample Proprietary Versions Non-Proprietary Versions
FHWA-HRT-13-100: Dr. Kay Willie at UCONN
April 2018 19 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC Deployments Across US and Canada
Source: https://www.fhwa.dot.gov/research/resources/uhpc/bridges.cfm
- 2016- 2015
- 2014- 2013
- 2012- 2011
- 2010- 2009
- 2008- 2007
- 1997- 2005- 2006
- 2017
April 2018 20 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC Properties: Some Ballpark Values
• Fresh “Slump” – Self Consolidating• Compressive Strength – 18 to 35 ksi• Modulus of Elasticity – 6000 to 8000 ksi• Sustained Tensile Capacity – 0.9 to 1.5 ksi• Interface Bond – Can surpass substrate tensile strength• Permeability – 100x less than conventional concrete• Freeze/Thaw Resistance – RDM > 95%• Rebar Bond – 8db embedment can deliver yield
20
April 2018 21 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2001
• UHPC had recently become available in US• FHWA recognized the potential in UHPC• Pretensioned bridge girders?
April 2018 22 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2003
• FHWA characterizing UHPC properties• Community of practice started to grow
April 2018 23 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2006
• FHWA investigating structural optimization• Iowa DOT constructed I-girder bridge• Initial use of UHPC connections in Ontario
April 2018 24 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2008
• FHWA recognizes synergy with connections…The KILLER App…
• Connections research:−Construction advantages− Structural advantages−Durability advantages
April 2018 25 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2011
• 25 bridges using UHPC are in service• New York, Iowa, Ontario are leaders• Broader community becoming interested• ACI 239 formed
April 2018 26 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2014
• 100 bridges in service• FHWA published connection design and
construction guidance• Grassroots effort for Symposium initiated
April 2018 27 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
UHPC: A Timeline of Progress
2017
• 200+ bridges in service across 25 States• AASHTO expressed interest in bridge
design and construction guidance• UHPC being used for:
−Connections−Deck rehabilitation−Girder repair−Girders, deck, piles
April 2018 28 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Clearly there is a NEEDClearly there are many APPLICATIONS
Pathways to Adoption…
April 2018 29 of 29ARPA-E Workshop on Extremely Durable Cementitious Materials
Infrastructure Needs, Applications, and Pathways to Adoption
• ARPA-E Extremely Durable Cementitious Materials Workshop • April 10-11, 2018 – Dallas, TX
Ben Graybeal, Ph.D., P.E.Team Leader – Bridge Engineering ResearchU.S. Federal Highway Administration202-493-3122 | [email protected]
![Rolling Fatigue Test of Large-Sized UHPC Member for Cable ... · tion of UHPC to cable stayed bridge [1-4]. As part of this project, SuperBridge800, a UHPC cable stayed bridge with](https://img.dokumen.tips/doc/110x75/5ebf1c7878e2f9654370ef61/rolling-fatigue-test-of-large-sized-uhpc-member-for-cable-tion-of-uhpc-to-cable.jpg)
