Link to the University of Pittsburgh Homepage
Link to the University Library System Homepage Link to the Contact Us Form

Investigation of the Behavior of External CFRP-to-Internal Reinforcing Bar Splices

Keenan, Patrick (2013) Investigation of the Behavior of External CFRP-to-Internal Reinforcing Bar Splices. Master's Thesis, University of Pittsburgh. (Unpublished)

Primary Text

Download (4MB) | Preview


The reported study investigates the feasibility and behavior of CFRP-to-reinforcing steel splices in medium-scale reinforced concrete beams. Six reinforced concrete beams were cast. The dimensions of the beams tested were 8 x 6 x 84 in. (203 x 152 x 2134 mm), reinforced with a single #4 bar (12.7 mm) as primary flexural reinforcement. Control specimens having a continuous bar and a conventional 18 in. (457 mm) contact lap splice serve to define the ‘target capacity’ for the CFRP-to-reinforcing steel splices. For the CFRP-to-reinforcing steel spliced beams, the reinforcing bar is terminated near midspan. A CFRP strip, designed to have a capacity equal to or greater than the bar is applied, lapped with the terminated bar and developed to the unreinforced end of the beam. The beams are tested in flexure under monotonically increasing loads to failure. Thus, after cracking, the beam capacity is entirely dependent on the force redistribution between the reinforcing steel in one half of the span and the CFRP strip in the other. This transfer occurs over the provided splice. Conventional lap splices between steel reinforcement are designed to provide enough development length to yield the bars. Therefore yielding of the primary reinforcing steel in the test specimens is an indication that the CFRP-to-reinforcing steel lap splice has sufficiently reached its design capacity. The test beams that were designed to have sufficient development lengths displayed the ability to yield the reinforcing steel; an indication that CFRP-to-reinforcing steel lap splices are a viable option. The test beams that were designed to have insufficient development length failed prior to the steel yielding. This was the anticipated result, since the purpose of these beams was to investigate the behavior and probable failure modes of under-designed CFRP-to-reinforcing steel splices.


Social Networking:
Share |


Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Keenan, Patrickpsk11@pitt.eduPSK11
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairHarries, KentKHARRIES@pitt.eduKHARRIES
Committee MemberYu, QiangQIY15@pitt.eduQIY15
Committee MemberBrigham, Johnbrigham@pitt.eduBRIGHAM
Date: 27 June 2013
Date Type: Publication
Defense Date: 28 April 2013
Approval Date: 27 June 2013
Submission Date: 1 April 2013
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 84
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Reinforced Concrete, CFRP, Lap Splice, Developement Length
Date Deposited: 27 Jun 2013 14:28
Last Modified: 15 Nov 2016 14:11


Monthly Views for the past 3 years

Plum Analytics

Actions (login required)

View Item View Item