Uncertainty Analysis of the Effect of Grout Injection on the Deformation of Multi-Wythe Stone Masonry Walls

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Title: Uncertainty Analysis of the Effect of Grout Injection on the Deformation of Multi-Wythe Stone Masonry Walls
Authors: Isfeld, Andrea C.Moradabadi, EhsanLaefer, Debra F.Shrive, Nigel G.
Permanent link: http://hdl.handle.net/10197/8047
Date: 2016
Abstract: The eighteenth century Prince of Wales Fort in Manitoba Canada has experienced extensive freezethaw damage and mortar washout within the escarp walls resulting in distress and failures at multiple locations. Injection of grout could counteract this degradation of structural stability. However existing literature provides little guidance as to the improvement level that could be expected, especially with respect to out-of-plane performance. As such, the proposed treatment was modelled to include a high level of uncertainty in the system through the application of a Random Field Finite Element Micromodelling technique. A Latin Hyper cube simulation method was used in conjunction with a parametric finite element model to randomize the material properties of each stone and relevant grouting layer. The numerical results predicted that the stone-grout bond was the most critical parameter in the proposed intervention, and that in the grouted wall sections, collapse would be avoided and lateral displacements stabilized with the proposed treatment.
Funding Details: European Union
Natural Sciences and Engineering Research Council of Canada
Type of material: Journal Article
Publisher: Elsevier
Journal: Construction and Building Materials
Volume: 126
Start page: 661
End page: 672
Copyright (published version): 2016 Elsevier
Keywords: Uncertainty analysisMasonry structureReliability analysisRandom finite element
DOI: 10.1016/j.conbuildmat.2016.09.058
Language: en
Status of Item: Peer reviewed
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Earth Institute Research Collection
Civil Engineering Research Collection

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