Title

Investigation of Bond Behavior of PBO Fiber-Reinforced Cementitious Matrix Composite on Low-Strength Concrete Interfaces

Presenter Information

Sarah Jemison

Department

Civil, Architectural and Environmental Engineering

Major

Civil and Architectural Engineering

Research Advisor

Sneed, Lesley

Advisor's Department

Civil, Architectural and Environmental Engineering

Funding Source

Opportunities for Undergraduate Research Experiences (OURE)

Abstract

Fiber Reinforced Cementitious Matrix (FRCM) composites can be employed as a valid alternative to Fiber Reinforced Polymer (FRP) composites for strengthening existing reinforced concrete (RC) structures. The investigation of the bond between fiber reinforced composites and the substrate onto which they are applied is important to understand their failure mechanism. In this study, the bond was investigated using single-lap shear tests carried out on FRCM strips, comprised of one layer of PBO fiber net embedded within two layers of matrix, bonded on a concrete prism. The role of the substrate characteristics on the failure mechanism of the FRCM composite was under investigation, comparing normal-strength concrete and low-strength concrete substrates.

Biography

Sarah Jemison is a senior Civil and Architectural Engineering duel major from Nixa, MO. She is part of the first generation of Greenberg Scholars of the Civil, Architectural, and Environmental Engineering Department who will be participating in the Missouri S&T Master Student Fellowship Programs pursuing BS+MS in an accelerated manner. She is a member of the Steel Bridge Design Team as well as Chi Epsilon and a Mechanics of Materials Teaching Assistant.

Research Category

Engineering

Presentation Type

Poster Presentation

Document Type

Poster

Location

Upper Atrium/Hall

Start Date

4-11-2017 1:00 PM

End Date

4-11-2017 3:00 PM

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Apr 11th, 1:00 PM Apr 11th, 3:00 PM

Investigation of Bond Behavior of PBO Fiber-Reinforced Cementitious Matrix Composite on Low-Strength Concrete Interfaces

Upper Atrium/Hall

Fiber Reinforced Cementitious Matrix (FRCM) composites can be employed as a valid alternative to Fiber Reinforced Polymer (FRP) composites for strengthening existing reinforced concrete (RC) structures. The investigation of the bond between fiber reinforced composites and the substrate onto which they are applied is important to understand their failure mechanism. In this study, the bond was investigated using single-lap shear tests carried out on FRCM strips, comprised of one layer of PBO fiber net embedded within two layers of matrix, bonded on a concrete prism. The role of the substrate characteristics on the failure mechanism of the FRCM composite was under investigation, comparing normal-strength concrete and low-strength concrete substrates.