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Cyclic bond behavior of FRCM composites applied on masonry substrate

Bellini, Alessandro ; Kahangi Shahreza, Seyedmohammad LU and Mazzotti, Claudio (2019) In Composites Part B: Engineering 169. p.189-199
Abstract

Fiber Reinforced Cementitious Matrix (FRCM) composite materials represent a recent strengthening technique, which can provide a complex scenario of different mechanical behaviors and failure mechanisms. The presented experimental study is aimed at improving the knowledge about the tensile and bond behavior of FRCMs with a focus, in particular, on the effects of cyclic loading at high stress levels. To this purpose, tensile characterization tests and single-lap shear tests were carried out on six different FRCM types, discussing and clarifying the different bond behaviors and the resulting failure modes. The experimental tests showed that the global behavior of the samples is affected not only by properties of composite grids and... (More)

Fiber Reinforced Cementitious Matrix (FRCM) composite materials represent a recent strengthening technique, which can provide a complex scenario of different mechanical behaviors and failure mechanisms. The presented experimental study is aimed at improving the knowledge about the tensile and bond behavior of FRCMs with a focus, in particular, on the effects of cyclic loading at high stress levels. To this purpose, tensile characterization tests and single-lap shear tests were carried out on six different FRCM types, discussing and clarifying the different bond behaviors and the resulting failure modes. The experimental tests showed that the global behavior of the samples is affected not only by properties of composite grids and mortars, but in particular by the textile-matrix adhesion mechanism. The effects of cyclic loading were experimentally evaluated for each strengthening system type in terms of maximum bond capacity, failure mechanism, stress-slip behavior and bond degradation through cycles. In general, application of load cycles didn't remarkably affect the performance of FRCM systems, proving their reliability under seismic forces.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bond test, Cyclic, Degradation, FRCM, Masonry
in
Composites Part B: Engineering
volume
169
pages
11 pages
publisher
Elsevier Ltd
external identifiers
  • scopus:85064315139
ISSN
1359-8368
DOI
10.1016/j.compositesb.2019.04.009
language
English
LU publication?
no
id
d7b0a531-37f2-45f1-b2f1-dbe13c5e7e56
date added to LUP
2019-09-16 10:26:27
date last changed
2020-06-03 05:09:42
@article{d7b0a531-37f2-45f1-b2f1-dbe13c5e7e56,
  abstract     = {<p>Fiber Reinforced Cementitious Matrix (FRCM) composite materials represent a recent strengthening technique, which can provide a complex scenario of different mechanical behaviors and failure mechanisms. The presented experimental study is aimed at improving the knowledge about the tensile and bond behavior of FRCMs with a focus, in particular, on the effects of cyclic loading at high stress levels. To this purpose, tensile characterization tests and single-lap shear tests were carried out on six different FRCM types, discussing and clarifying the different bond behaviors and the resulting failure modes. The experimental tests showed that the global behavior of the samples is affected not only by properties of composite grids and mortars, but in particular by the textile-matrix adhesion mechanism. The effects of cyclic loading were experimentally evaluated for each strengthening system type in terms of maximum bond capacity, failure mechanism, stress-slip behavior and bond degradation through cycles. In general, application of load cycles didn't remarkably affect the performance of FRCM systems, proving their reliability under seismic forces.</p>},
  author       = {Bellini, Alessandro and Kahangi Shahreza, Seyedmohammad and Mazzotti, Claudio},
  issn         = {1359-8368},
  language     = {eng},
  month        = {07},
  pages        = {189--199},
  publisher    = {Elsevier Ltd},
  series       = {Composites Part B: Engineering},
  title        = {Cyclic bond behavior of FRCM composites applied on masonry substrate},
  url          = {http://dx.doi.org/10.1016/j.compositesb.2019.04.009},
  doi          = {10.1016/j.compositesb.2019.04.009},
  volume       = {169},
  year         = {2019},
}