The Effect of Width for Multiple Strips on the De-Bonding Mechanism of Carbon Fiber Bonded to Concrete for Rehabilitation
As structures deteriorate due to normal wear and tear or change in use, they need to be strengthened such that they are able to accommodate the present and future load demands. Fiber Reinforced Polymers (FRP), in the form of fabrics and laminates, have become a viable solution for rehabilitation because of its strength to weight ratio, resistance to corrosion, and its ease of application. However, laboratory and site investigations have found that de-bonding of the substrates initiates at the end of FRP plate or the concrete member cracks and propagates towards the plate end. This is a major concern because the resulting failure of the system is brittle and sudden. The hypothesis is that increasing the influence area of the substrate will impact the overall capacity of the system and mitigate the concern. This study researches the increased capacity of reinforced concrete through the mobilization of carbon fiber strips and examines the number and width of strips as parameters. Thus the objective of this study is to investigate whether the distribution of the same width of fabric will have an impact on the overall strength of the system. It is predicted that multiple strips of a particular width will yield a greater load capacity than one sheet of fabric with an equivalent width.
-
Supplemental Notes:
- This paper was sponsored by TRB committee AFF80 Standing Committee on Structural Fiber Reinforced Polymers.
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Carnes, Marcella
- Mtenga, Primus
- Kobelo, Doreen
-
Conference:
- Transportation Research Board 95th Annual Meeting
- Location: Washington DC, United States
- Date: 2016-1-10 to 2016-1-14
- Date: 2016
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 11p
- Monograph Title: TRB 95th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Backing strips; Carbon fibers; Debonding; Fiber reinforced polymers; Rehabilitation; Reinforced concrete; Structural strengthening
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Materials;
Filing Info
- Accession Number: 01593563
- Record Type: Publication
- Report/Paper Numbers: 16-4568
- Files: TRIS, TRB, ATRI
- Created Date: Mar 15 2016 10:10AM