Masters Theses

Erin N. Wobbe

Keywords and Phrases

Steel reinforced polymer (SRP); Steel reinforced grout (SRG); Bond strength (Materials)

Abstract

"The use of externally bonded Steel-Reinforced Polymer (SRP) and Steel Reinforced Grout (SRG) composites is a promising new technology for increasing the flexural and shear capacities of reinforced concrete (RC) members. The reinforcement system in these composites is a sheet made up of unidirectional cords consisting of tightly wound ultra high strength steel wires. The reinforcement can be molded into resin systems (SRP) or cementitious grout (SRG). This research program investigated the flexural and shear strength improvement and performance of sixteen RC beams with the externally bonded SRP and SRG composites. The sixteen RC beams were tested under a four-point bending test setup in which the tested variables considered the number of composite plies and types of bonding agents. In addition, the use of external wraps were also investigated to delay debonding of the composites and increase the shear capacity. Results from testing proved that the flexural and shear capacities were increased and that the experimental derived results matched the theoretical models within a reasonable degree of accuracy. Furthermore, the bond dependent coefficient, km, which was computed based on the experimental results for the RC beams retrofitted with the SRG composites could not be duplicated by the model proposed by the ACI 440 committee. On the other hand for those other beams retrofitted with the SRP composites the experimentally derived bond dependent coefficient values were similar to those computed by the ACI 440 method. Based on this study, it was concluded that this new technology has great potential for the repair and strengthening of concrete structures"--Abstract, page iii.

Advisor(s)

Silva, Pedro Franco

Committee Member(s)

Dharani, Lokeswarappa R.
Nanni, Antonio
Birman, V. (Victor)

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Comments

The author would like to show appreciation for the funding provided by the National Science Foundation, and Structural Preservation Systems.

Publisher

University of Missouri--Rolla

Publication Date

Fall 2005

Pagination

xii, 95 pages

Note about bibliography

Includes bibliographical references (pages 93-94).

Rights

© 2005 Erin Nichole Wobbe, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Reinforced concreteGrout (Mortar)Strains and stresses -- Testing

Thesis Number

T 8886

Print OCLC #

70847666

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