Flexural Performance of Concrete Beams Strengthened using Different Repair Techniques

Nassif, Hani; Abu-Obeidah, Adi; Na, Chaekuk; Ozbay, Kaan; Gao, Jingqin; Khayat, Kamal H.; Research on Concrete Applications for Sustainable Transportation (RE-CAST); Rutgers University

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Flexural Performance of Concrete Beams Strengthened using Different Repair Techniques

2019-06-01
By Nassif, Hani ; Abu-Obeidah, Adi ; Na, Chaekuk ; ...

[PDF-4.79 MB]

English

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Creators:

Nassif, Hani ; Abu-Obeidah, Adi ; Na, Chaekuk ; Ozbay, Kaan ; Gao, Jingqin ; ... More +

Nassif, Hani ; Abu-Obeidah, Adi ; Na, Chaekuk ; Ozbay, Kaan ; Gao, Jingqin ; Khayat, Kamal H. Less -
Corporate Creators:

Research on Concrete Applications for Sustainable Transportation (RE-CAST) ; Rutgers University

Research on Concrete Applications for Sustainable Transportation (RE-CAST) ; Rutgers University Less -
Corporate Contributors:

United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program

United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program Less -
Subject/TRT Terms:

[+]

Beams Bridges CFRP Cracking Failure Analysis Ferrocement Fiber Reinforced Concrete Fiber Reinforced Polymers Flexural Strength Life Cycle Cost Assessment Polypropylene Fibers Prestressed Concrete Repair Repairing Retrofitting Self-consolidating Concrete Spalling Steel Fibers Structural Performance Supplementary Cementitious Materials Tendons (Materials)
Publication/ Report Number:

RECAST UTC #00042134-01-2D
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report, Period: 05/01/2017 -05/01/2019
Corporate Publisher:

Research on Concrete Applications for Sustainable Transportation (RE-CAST) (UTC)
Abstract:

With an aging infrastructure, the United States is faced with a wide variety of deterioration and lack of functionality for its bridges and highways. Economic factors do not always allow for a complete replacement of the structure which highlights the importance of the concrete rehabilitation technologies. Retrofitting existing structures using fiber reinforced laminates has shown to be effective and can increase the service life of the structure if applied properly. This study includes an experimental program of reinforced concrete beams retrofitted in flexure with fiber-reinforced ferrocement (FR-FC) and fiber-reinforced self-consolidating concrete (FR-SCC) laminates. The laminate acts as flexure reinforcement to the concrete structure element that suffered spalling and loss of concrete cover. In addition to FR-FC and FR-SCC, the use of unbonded tendons in prestressed concrete beams has been widely utilized in bridges, parking structures, and residential buildings for strengthening, rehabilitation or repair of such members. With the growth of live load and the increase of damaged concrete members, there is a need to develop and utilize new techniques for more efficient and improved designs in reinforced and prestressed concrete members. This research presents an experimental investigation to study the effect of the reinforcements, shear studs, depth of the concrete spalled and the fibers content in the carbon fiber reinforced polymer (CFRP) tendons, FR-FC and FR-SCC laminate on the cracking load, ultimate capacity, deflection and the failure mode of the tested beams.
Format:

PDF
Funding:

USDOT: DTRT13-G-UTC45
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:4789105b9862517ff6a5c97f4f4e8bb51a81499c573df5fea0febcb4cc3f2b3d
Download URL:

https://rosap.ntl.bts.gov/view/dot/54004/dot_54004_DS1.pdf
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Flexural Performance of Concrete Beams Strengthened using Different Repair Techniques

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