Out-Of-Plane Behavior of Rm Walls Strengthed with Frcm Composite or Nsm with Cementitious Adhesive

Abstract

Twelve reinforced masonry (RM) walls strengthened in flexure using Fabric-Reinforced Cementitious Matrix (FRCM) Composite or Near Surface Mounted (NSM) with cementitious adhesive were built as a part of this study. FRCM strengthening composite materials consisted of one or two plies of carbon or polyparaphenylene benzobisoxazole (PBO) fabric embedded in cementitious mortar. NSM technique consisted of carbon or glass bar encapsulated in slots that had been grooved into the masonry tension surface.For all these specimens, a constant mild steel reinforcement ratio (ρ) was used. These simply supported walls were tested under an out-of-plane cyclic load that was applied along two line loads. The key parameters for this investigation were the type and amount of fabric, and bond pattern (stack and running). The behavior of the specimens is discussed with emphasis on the load deflection response, and increasing in stiffness and flexural capacity. The test results indicated that the behavior of the masonry walls was significantly dependent on the type of fabric used. Different modes of failure occurred in the strengthened reinforced walls, including crushing of concrete block, as well as a debonding of FRP from the masonry substrate and slippage of fabric within cementitious matrix.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

Higher Committee for Education Development in Iraq, Grant None

Keywords and Phrases

Experimental study; FRCM; Masonry; NSM; Strengthening or repair

International Standard Book Number (ISBN)

978-000000000-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Science Direct, All rights reserved.

Publication Date

01 Jan 2018

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