Evaluation of 0.70 inch Diameter Carbon Fiber Reinforced Polymer (CFRP) Pretensioning Strands in Prestressed Beams

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General Information
Study Number: TPF-5(363)
Lead Organization: Michigan Department of Transportation
Contract Start Date: Dec 05, 2017
Solicitation Number: 1433
Partners: ME, MI, NC, OH
Contractor(s): Lawrence Technological University
Status: Cleared by FHWA
Est. Completion Date: Dec 31, 2021
Contract/Other Number:
Last Updated: May 25, 2021
Contract End Date: Dec 31, 2021
Financial Summary
Contract Amount: $587,307.25
Total Commitments Received: $423,687.00
100% SP&R Approval: Approved
Contact Information
Lead Study Contact(s): Andre' Clover
clovera@michigan.gov
Phone: 517-749-9001
FHWA Technical Liaison(s): Eric Munley
Eric.Munley@dot.gov
Phone: 202-493-3046
Study Champion(s): Steve Kahl
kahlS@michigan.gov
Phone: 517-898-3428
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Maine Department of Transportation 2017 $60,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Maine Department of Transportation 2018 $20,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Maine Department of Transportation 2019 $22,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Michigan Department of Transportation 2017 $36,000.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2018 $75,798.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2019 $24,935.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
North Carolina Department of Transportation 2017 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2018 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2019 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2020 $32,477.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
Ohio Department of Transportation 2017 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2018 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2019 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2020 $32,477.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us

Study Description

MDOT has been working with Lawrence Technological University [in Michigan] for many years to develop carbon fiber reinforced polymer (CFRP) prestressed concrete beams. Recent research developments on demonstration projects have shown that 0.6 inch diameter CFRP strands have smaller nominal area and lower allowable capacity than steel 0.6 inch diameter steel strands; thus requiring more strands for a given design. This makes it difficult for bridge designers to find projects where we can fit enough CFRP strands in a beam to meet load carrying requirements.

Objectives

1. To evaluate material properties, details, and design criteria to use 0.7 inch diameter CFRP strands for pretensioning of prestressed AASHTO I girders, bulb-t, and box beams.

2. To evaluate performance of 0.7 inch diameter CFRP strands for environmental conditions and extreme events.

3. To prepare design procedures and examples.

4. To prepare construction specifications for 0.7 inch CFRP strands and identify fabrication concerns with the larger diameter strands.

Scope of Work

Currently, 0.7 inch diameter CFRP strands are available; thus, making the use of CFRP pre-tensioning in pre-stressed beams more viable. The proposed research is necessary in order to evaluate the safe use of 0.7 inch diameter CFRP strands in a beam to meet load carrying requirements. The following research tasks are recommended:

Task 1: Evaluate and report on the material properties of larger diameter (0.7 inch) CFRP strands including confirmation of ultimate strength and manufacturer guaranteed tensile/strain capacity at ambient as well as elevated temperatures. Compare and report on the difference in material properties and performance between 0.7 inch CFRP strands and strands with a smaller strands diameter (0.6 inch) CFRP strands under various harsh conditions such as ASTM 666. Prepare and evaluate the effectiveness of various anchorage systems for prestressing applications. Evaluate creep rupture stress, relaxation loss, and overall long-term losses using available test standards and verify the results through extended monitoring period subjected to harsh environmental conditions that highway bridges are exposed to.

Task 2: Evaluate and report on the interaction between 0.7 inch CFRP strands and structural concrete in pre-tensioning applications. Evaluate design criteria such as guaranteed ultimate tensile strength, transfer length, development length, bond strength, proper concrete cover, strands spacing, and effect of difference in coefficient of thermal expansion between concrete and CFRP on the bond strength under loads and severe weather conditions.

Task 3: Evaluate and report on the performance of 0.7 inch CFRP strands under extreme events such as fire/loading events following ASTM E-119 and under multiple cycles of freezing and thawing on large-scale prestressed beams following appropriate test standards.

Task 4: Evaluate and report on unique changes to CFRP prestressed beam design procedures when 0.7 inch CFRP strands are used for longitudinal pre-tensioning.

Task 5: Test and evaluate the performance of full-scale precast prestressed beams prestressed with 0.7 inch strands and compare the performance with similar beams prestressed with 0.6 inch steel and CFRP strands.

Task 6: Prepare design procedure/examples and construction specifications for 0.7-inch CFRP prestressed concrete highway bridge beams and identify fabrication concerns and potential solutions to the larger diameter strands in relation to the current stressing bed layouts.

Comments

Contract Extension Authorization Z3/R2. Revised completion date 12/31/2021.

Documents Attached
Title File/Link Type Privacy Download
Approve Waiver Approval of SP&R Waiver Pooled Fund Solicitation #1434 .pdf Memorandum Public
Acceptance Letter TPF5(363) Carbon Accept Sign.pdf Memorandum Public
Waiver Request # 1433 - Waiver Request Letter.pdf Other Public
Quarterly Report [July- September] 2017 TPF5363_Quarterly Report_Q3 2017.pdf Quarterly Progress Report Public
Quarterly Report [April-June] 2017 TPF5363_Quarterly Report_Q2 Report 2017.pdf Quarterly Progress Report Public
Quarterly Report [October- December] 2018 Quarterly Report (October-December) 2018.pdf Quarterly Progress Report Public
Quarterly Report [October- December] 2017 TPF5363_Quarterly Report_Q4 2017.pdf Quarterly Progress Report Public
Quarterly Report [April- June] 2018 TPF-5(363)_2nd Quarter Report 2018.pdf Quarterly Progress Report Public
Quarterly Report [January- March] 2018 TPF5363_Quarterly Report_Q1 2018v2.pdf Quarterly Progress Report Public
Quarterly Report [July- September] 2018 TPF-5(363) 3rd Quarterly Report FY 2018.pdf Quarterly Progress Report Public
Quarterly Report [January- March] 2019 Quarterly Report [January- March] 2019.pdf Quarterly Progress Report Public
Quarterly Report [April-June] 2019 Quarterly Report [April- June] 2019.pdf Quarterly Progress Report Public
Documents Attached
Title File/Link Type Privacy Download
Waiver Approval Letter Approval of SPR Waiver Pooled Fund Solicitation #1433.pdf Other Public

Evaluation of 0.70 inch Diameter Carbon Fiber Reinforced Polymer (CFRP) Pretensioning Strands in Prestressed Beams

General Information
Study Number: TPF-5(363)
Lead Organization: Michigan Department of Transportation
Contract Start Date: Dec 05, 2017
Solicitation Number: 1433
Partners: ME, MI, NC, OH
Contractor(s): Lawrence Technological University
Status: Cleared by FHWA
Est. Completion Date: Dec 31, 2021
Contract/Other Number:
Last Updated: May 25, 2021
Contract End Date: Dec 31, 2021
Financial Summary
Contract Amount: $587,307.25
Total Commitments Received: $423,687.00
100% SP&R Approval:
Contact Information
Lead Study Contact(s): Andre' Clover
clovera@michigan.gov
Phone: 517-749-9001
FHWA Technical Liaison(s): Eric Munley
Eric.Munley@dot.gov
Phone: 202-493-3046
Commitments by Organizations
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Maine Department of Transportation 2017 $60,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Maine Department of Transportation 2018 $20,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Maine Department of Transportation 2019 $22,000.00 Wayne Frankhauser Dale Peabody 207- 624-3305 Dale.Peabody@maine.gov
Michigan Department of Transportation 2017 $36,000.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2018 $75,798.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
Michigan Department of Transportation 2019 $24,935.00 Steve Kahl Andre' Clover 517-749-9001 clovera@michigan.gov
North Carolina Department of Transportation 2017 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2018 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2019 $20,000.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
North Carolina Department of Transportation 2020 $32,477.00 Trey Carroll Neil Mastin 919 707 6661 jmastin@ncdot.gov
Ohio Department of Transportation 2017 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2018 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2019 $20,000.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us
Ohio Department of Transportation 2020 $32,477.00 Omar Abu-Hajar General Research 614-644-8135 Research@dot.state.oh.us

Study Description

Study Description

MDOT has been working with Lawrence Technological University [in Michigan] for many years to develop carbon fiber reinforced polymer (CFRP) prestressed concrete beams. Recent research developments on demonstration projects have shown that 0.6 inch diameter CFRP strands have smaller nominal area and lower allowable capacity than steel 0.6 inch diameter steel strands; thus requiring more strands for a given design. This makes it difficult for bridge designers to find projects where we can fit enough CFRP strands in a beam to meet load carrying requirements.

Objectives

1. To evaluate material properties, details, and design criteria to use 0.7 inch diameter CFRP strands for pretensioning of prestressed AASHTO I girders, bulb-t, and box beams.

2. To evaluate performance of 0.7 inch diameter CFRP strands for environmental conditions and extreme events.

3. To prepare design procedures and examples.

4. To prepare construction specifications for 0.7 inch CFRP strands and identify fabrication concerns with the larger diameter strands.

Scope of Work

Currently, 0.7 inch diameter CFRP strands are available; thus, making the use of CFRP pre-tensioning in pre-stressed beams more viable. The proposed research is necessary in order to evaluate the safe use of 0.7 inch diameter CFRP strands in a beam to meet load carrying requirements. The following research tasks are recommended:

Task 1: Evaluate and report on the material properties of larger diameter (0.7 inch) CFRP strands including confirmation of ultimate strength and manufacturer guaranteed tensile/strain capacity at ambient as well as elevated temperatures. Compare and report on the difference in material properties and performance between 0.7 inch CFRP strands and strands with a smaller strands diameter (0.6 inch) CFRP strands under various harsh conditions such as ASTM 666. Prepare and evaluate the effectiveness of various anchorage systems for prestressing applications. Evaluate creep rupture stress, relaxation loss, and overall long-term losses using available test standards and verify the results through extended monitoring period subjected to harsh environmental conditions that highway bridges are exposed to.

Task 2: Evaluate and report on the interaction between 0.7 inch CFRP strands and structural concrete in pre-tensioning applications. Evaluate design criteria such as guaranteed ultimate tensile strength, transfer length, development length, bond strength, proper concrete cover, strands spacing, and effect of difference in coefficient of thermal expansion between concrete and CFRP on the bond strength under loads and severe weather conditions.

Task 3: Evaluate and report on the performance of 0.7 inch CFRP strands under extreme events such as fire/loading events following ASTM E-119 and under multiple cycles of freezing and thawing on large-scale prestressed beams following appropriate test standards.

Task 4: Evaluate and report on unique changes to CFRP prestressed beam design procedures when 0.7 inch CFRP strands are used for longitudinal pre-tensioning.

Task 5: Test and evaluate the performance of full-scale precast prestressed beams prestressed with 0.7 inch strands and compare the performance with similar beams prestressed with 0.6 inch steel and CFRP strands.

Task 6: Prepare design procedure/examples and construction specifications for 0.7-inch CFRP prestressed concrete highway bridge beams and identify fabrication concerns and potential solutions to the larger diameter strands in relation to the current stressing bed layouts.

Comments

Contract Extension Authorization Z3/R2. Revised completion date 12/31/2021.

Title File/Link Type Private
Approve Waiver Approval of SP&R Waiver Pooled Fund Solicitation #1434 .pdf Memorandum Public
Acceptance Letter TPF5(363) Carbon Accept Sign.pdf Memorandum Public
Waiver Request # 1433 - Waiver Request Letter.pdf Other Public
Quarterly Report [July- September] 2017 TPF5363_Quarterly Report_Q3 2017.pdf Quarterly Progress Report Public
Quarterly Report [April-June] 2017 TPF5363_Quarterly Report_Q2 Report 2017.pdf Quarterly Progress Report Public
Quarterly Report [October- December] 2018 Quarterly Report (October-December) 2018.pdf Quarterly Progress Report Public
Quarterly Report [October- December] 2017 TPF5363_Quarterly Report_Q4 2017.pdf Quarterly Progress Report Public
Quarterly Report [April- June] 2018 TPF-5(363)_2nd Quarter Report 2018.pdf Quarterly Progress Report Public
Quarterly Report [January- March] 2018 TPF5363_Quarterly Report_Q1 2018v2.pdf Quarterly Progress Report Public
Quarterly Report [July- September] 2018 TPF-5(363) 3rd Quarterly Report FY 2018.pdf Quarterly Progress Report Public
Quarterly Report [January- March] 2019 Quarterly Report [January- March] 2019.pdf Quarterly Progress Report Public
Quarterly Report [April-June] 2019 Quarterly Report [April- June] 2019.pdf Quarterly Progress Report Public
Title File/Link Type Private
Waiver Approval Letter Approval of SPR Waiver Pooled Fund Solicitation #1433.pdf Other Public

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