Masters Theses

Keywords and Phrases

Confinement; FRCM; Masonry; Steel reinforced grout; Strengthening

Abstract

"In this study, a new type of composite comprised of steel fiber cords embedded in a natural hydraulic lime mortar matrix, known as steel reinforced grout (SRG), is explored for the use in confinement of masonry columns. An experimental study was carried out to understand the behavior of solid clay brick masonry columns confined by SRG jackets. Twenty-four confined and seven unconfined columns with a square cross-section were tested to failure under a monotonic concentric compressive load. Test parameters considered were the column corner condition, number of fiber jacket layers, and number of fiber overlapping faces. SRG confinement improved the compressive strength, ultimate axial strain, and energy absorption of the masonry columns relative to the unconfined condition. Results showed that increasing the number of fiber layers increased the confined compressive strength, however the increase in confined strength was not proportional to the number of fiber layers. Rounding the column corners slightly increased the confined compressive strength. Increasing the number of fiber overlapping faces also increased the confined compressive strength. Models from the literature for FRP-confined masonry were examined for their applicability to predict the strength increase from SRG jackets. Considering the specimens included in this thesis work and supplemented with others collected from the literature, it was found that the model for the Italian CNR-DT 200 provided the closest predictions of the increase in compressive strength provided by the SRG jacket (within 33% of the experimental values). More work is needed to improve the predictions of the increase in compressive strength provided by SRG jackets and to predict the ultimate strain in the jacket"--Abstract, page iii.

Advisor(s)

Sneed, Lesley

Committee Member(s)

ElGawady, Mohamed
Yan, Guirong Grace

Department(s)

Civil, Architectural and Environmental Engineering

Degree Name

M.S. in Civil Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2018

Pagination

xxvi, 332 pages

Note about bibliography

Includes bibliographic references (pages 328-331).

Rights

© 2018 Sarah Elizabeth Jemison, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 11424

Electronic OCLC #

1084478334

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