Masters Theses

Abstract

"The use of fiber reinforced polymers (FRP) in repairing and strengthening bridges has been an active area of research and implementation in recent years. In particular, adhering FRP to the tension face of reinforced concrete (RC) beams has provided an increase in load carrying capacity and extended the service life of the structures. However, the life expectancy of this technology has not yet been fully investigated or documented due to insufficient data.

In this thesis, the author presents one possible strength degradation approach using analytical modeling to determine the life expectancy of FRP strengthened bridges. An actual Carbon FRP field strengthened bridge in Dallas County, Missouri, USA, is utilized to demonstrate the life expectancy approach. The Dallas County Bridge P-0962 was constructed in 1955 and strengthened in 2003. To predict the life expectancy behavior of the bridge structure, a theoretical model was derived using basic concepts, past research, and the tested properties of specimens for critical chloride concentration.

An interaction model for life expectancy estimation is based on the reduction of moment capacity due to corrosion of reinforcement before and after strengthening, bond degradation of FRP and substrate concrete, and degradation of FRP material itself based on fatigue analysis. However, this model is the first possible approach to determine the life expectancy of FRP strengthened structures based on the statistical data available in literature"-- Abstract, p. iii

Advisor(s)

Myers, John

Committee Member(s)

Nanni, Antonio
Ayoub, Ashraf Salah Eldin

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Sponsor(s)

Missouri. Department of Transportation
University of Missouri--Rolla. University Transportation Center

Comments

Accompanying CD-ROM, available at Missouri S&T Library, contains the two sheets of Math-CAD. First Math-CAD sheet has a program for calculating life expectancy of FRP strengthened RC bridges in Standard American English Units (S.A.E.). Second Math-CAD sheet has a program for calculating life expectancy of FRP strengthened RC bridges in S.I. Metric Units (S.I.)
System requirements: Math-CAD.

Publisher

University of Missouri--Rolla

Publication Date

Spring 2007

Pagination

xiii, 135 pages, CD-ROM

Note about bibliography

Includes bibliographical references (pages 126-134)

Rights

© 2007 Amol V. Sawant, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Concrete bridges -- Maintenance and repairFiber-reinforced concreteReinforced concrete construction

Thesis Number

T 9170

Print OCLC #

191062571

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