Masters Theses

Marta Matana

Keywords and Phrases

Steel reinforced polymer (SRP); Steel reinforced grout (SRG); Bond performance

Abstract

"The objective of this research was to investigate the bond behavior of steel reinforced polymer (SRP) and steel reinforced grout (SRG) applied as external reinforcement to concrete substrate. SRP and SRG are innovative systems developed as complimentary materials to fiber reinforced polymer (FRP). In order to develop a composite action and exploit performance of the system, bond between the reinforcement and the concrete substrate has to be satisfactory. Two types of destructive tests were used to study the bond performance: pull-off and direct shear. Prior to the application of the reinforcement, the concrete substrate was roughened using waterjetting as the abrading technique. Characterization of the roughened surface was conducted using a laser profilometer that assures objective recording of the data. Different number and density of reinforcement plies, as well as surface roughness and concrete strength were the variables in the pull-off testing. Direct shear testing specimens were prepared using manufacturer’s recommendations for the density of reinforcement plies, varying the bonded length and the roughness of the concrete substrate. Test results showed that bond performance of SRP is satisfactory, with the failure mode in the concrete substrate. Conversely, SRG showed failure within the layer of grout both in pull-off and in direct shear tests. Pull-off strength of SRP as well as direct shear strength appears not to be influenced by surface roughness. For SRP, direct shear test has proven the existence of the effective bond length after which the load can no longer increase"--Abstract, page iii.

Advisor(s)

Nanni, Antonio

Committee Member(s)

Silva, Pedro Franco
Dharani, Lokeswarappa R.
Birman, V. (Victor)

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Comments

This project was funded through the NSF supported Repair of Buildings and Bridges with Composites (RB2C) Cooperative Research Center at the University of Missouri--Rolla.

Publisher

University of Missouri--Rolla

Publication Date

Fall 2005

Pagination

x, 131 pages

Note about bibliography

Includes bibliographical references (pages 128-130).

Rights

© 2005 Marta Matana, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

PolymersGrout (Mortar)Steel

Thesis Number

T 8883

Print OCLC #

70843867

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