Composite-Based Rehabilitation of Constructed Bridge Girders with Grooved Geometrics

Kim, Yail Jimmy; University of Colorado at Denver. Department of Civil Engineering

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Composite-Based Rehabilitation of Constructed Bridge Girders with Grooved Geometrics

2019-10-01
By Kim, Yail Jimmy

[PDF-2.59 MB]

English

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Details:

Creators:

Kim, Yail Jimmy
Corporate Creators:

University of Colorado at Denver. Department of Civil Engineering
Corporate Contributors:

Mountain-Plains Consortium ; Upper Great Plains Transportation Institute ; North Dakota State University ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology

Mountain-Plains Consortium ; Upper Great Plains Transportation Institute ; North Dakota State University ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Bonding Carbon Fibers Composite Materials Debonding Epoxides Fiber Reinforced Polymers Girder Bridges Girders Rehabilitation (Maintenance) Shear Stress
Publication/ Report Number:

MPC-554
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report 9/2017 – 9/2022
Corporate Publisher:

Mountain-Plains Consortium
Abstract:

This report presents a research program studying the grooved bonding schemes of composite sheets (carbon fiber reinforced polymer, CFRP) for rehabilitating concrete members. The first phase of the research presents the efficacy of functional periodicity on controlling the occurrence of interfacial failure in concrete members strengthened with CFRP sheets. The hypothesis tested is that periodically placed stress reducers preserve the integrity of the CFRP-concrete interface by interrupting the progression of mechanical damage. The groove and U-wrap near the loaded-end dissipate interfacial fracture energy and impede stress progression. The second phase of the research discusses the potential and feasibility of an alternative bonding method for strengthening reinforced concrete beams with CFRP sheets. Periodic grooves are cut along the tensile soffit of the beams, in the transverse direction, on which CFRP is bonded and filled with an epoxy adhesive to lessen interfacial stresses. The tested bonding schemes comprise three grooves in the vicinity of CFRP-termination and uniformly distributed grooves in the beam span. The behavior of these beams is investigated in comparison with that of unstrengthened and conventional CFRP-bonded beams with plain substrates.
Format:

PDF
Collection(s):

University Transportation Centers
Main Document Checksum:

[+]

urn:sha256:509f4f47d7b236652b82e6b7330558ed6c08bbdf0f70df3ee66c3b4665d00a6d
Download URL:

https://rosap.ntl.bts.gov/view/dot/62866/dot_62866_DS1.pdf
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Composite-Based Rehabilitation of Constructed Bridge Girders with Grooved Geometrics

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