01593563

Component

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.

This paper was sponsored by TRB committee AFF80 Standing Committee on Structural Fiber Reinforced Polymers.

01584066

16-4568

English

11p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Backing strips; Carbon fibers; Debonding; Fiber reinforced polymers; Rehabilitation; Reinforced concrete; Structural strengthening

Bridges and other structures; Highways; Maintenance and Preservation; Materials

Transportation Research Board Annual Meeting 2016 Paper #16-4568

TRIS, TRB, ATRI

Jan 12 2016 6:01PM