Stainless steel grids for confinement of clay brick masonry columns

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Abstract

This work presents the results of an experimental investigation on the behavior of 21 solid clay brick columns internally strengthened by stainless steel grids placed in the horizontal joints of mortar. This reinforcing technique can be applied as a constructive technique for new construction or as a retrofitting technique for existing structures (old structures to be reconstructed by original constructive method and internal reinforcement). Monotonic compressive loading tests were carried out under concentric and eccentric load. The effects of different numbers of steel grids and eccentricity of the external load were examined. Also, a detailed characterization of the constituent materials was made experimentally. The compression tests show the effectiveness of the proposed strengthening technique, which proves to be able to produce the increases in strength and energy required to collapse brick columns under both concentric and eccentric loads. To provide an analysis method for practical applications, an analytical expression is proposed that gives the strength value of confined brick columns by considering that the biaxial strength domain of the bricks is modified due to the tensile contribution offered by the presence of steel grids. Moreover, moment-axial force domains, derived using the plane cross section theory, are calibrated on the basis of the compressive strength values experimentally detected.
Lingua originaleEnglish
Numero di pagine8
RivistaJournal of Structural Engineering
Volume142
Stato di pubblicazionePublished - 2016

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Stainless Steel
Brick
Clay
Stainless steel
Steel
Retrofitting
Mortar
Compressive strength
Reinforcement
Compaction
clay

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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title = "Stainless steel grids for confinement of clay brick masonry columns",
abstract = "This work presents the results of an experimental investigation on the behavior of 21 solid clay brick columns internally strengthened by stainless steel grids placed in the horizontal joints of mortar. This reinforcing technique can be applied as a constructive technique for new construction or as a retrofitting technique for existing structures (old structures to be reconstructed by original constructive method and internal reinforcement). Monotonic compressive loading tests were carried out under concentric and eccentric load. The effects of different numbers of steel grids and eccentricity of the external load were examined. Also, a detailed characterization of the constituent materials was made experimentally. The compression tests show the effectiveness of the proposed strengthening technique, which proves to be able to produce the increases in strength and energy required to collapse brick columns under both concentric and eccentric loads. To provide an analysis method for practical applications, an analytical expression is proposed that gives the strength value of confined brick columns by considering that the biaxial strength domain of the bricks is modified due to the tensile contribution offered by the presence of steel grids. Moreover, moment-axial force domains, derived using the plane cross section theory, are calibrated on the basis of the compressive strength values experimentally detected.",
keywords = "Brick masonry, Building and Construction, Civil and Structural Engineering, Compression, Concrete and masonry structures, Ductility, Flexure, Materials Science (all), Mechanical Engineering, Mechanics of Materials, Steel grids, Strength",
author = "Maurizio Papia and Liborio Cavaleri and Giuseppe Campione",
year = "2016",
language = "English",
volume = "142",
journal = "Journal of Structural Engineering",
issn = "0733-9445",
publisher = "American Society of Civil Engineers (ASCE)",

}

TY - JOUR

T1 - Stainless steel grids for confinement of clay brick masonry columns

AU - Papia, Maurizio

AU - Cavaleri, Liborio

AU - Campione, Giuseppe

PY - 2016

Y1 - 2016

N2 - This work presents the results of an experimental investigation on the behavior of 21 solid clay brick columns internally strengthened by stainless steel grids placed in the horizontal joints of mortar. This reinforcing technique can be applied as a constructive technique for new construction or as a retrofitting technique for existing structures (old structures to be reconstructed by original constructive method and internal reinforcement). Monotonic compressive loading tests were carried out under concentric and eccentric load. The effects of different numbers of steel grids and eccentricity of the external load were examined. Also, a detailed characterization of the constituent materials was made experimentally. The compression tests show the effectiveness of the proposed strengthening technique, which proves to be able to produce the increases in strength and energy required to collapse brick columns under both concentric and eccentric loads. To provide an analysis method for practical applications, an analytical expression is proposed that gives the strength value of confined brick columns by considering that the biaxial strength domain of the bricks is modified due to the tensile contribution offered by the presence of steel grids. Moreover, moment-axial force domains, derived using the plane cross section theory, are calibrated on the basis of the compressive strength values experimentally detected.

AB - This work presents the results of an experimental investigation on the behavior of 21 solid clay brick columns internally strengthened by stainless steel grids placed in the horizontal joints of mortar. This reinforcing technique can be applied as a constructive technique for new construction or as a retrofitting technique for existing structures (old structures to be reconstructed by original constructive method and internal reinforcement). Monotonic compressive loading tests were carried out under concentric and eccentric load. The effects of different numbers of steel grids and eccentricity of the external load were examined. Also, a detailed characterization of the constituent materials was made experimentally. The compression tests show the effectiveness of the proposed strengthening technique, which proves to be able to produce the increases in strength and energy required to collapse brick columns under both concentric and eccentric loads. To provide an analysis method for practical applications, an analytical expression is proposed that gives the strength value of confined brick columns by considering that the biaxial strength domain of the bricks is modified due to the tensile contribution offered by the presence of steel grids. Moreover, moment-axial force domains, derived using the plane cross section theory, are calibrated on the basis of the compressive strength values experimentally detected.

KW - Brick masonry

KW - Building and Construction

KW - Civil and Structural Engineering

KW - Compression

KW - Concrete and masonry structures

KW - Ductility

KW - Flexure

KW - Materials Science (all)

KW - Mechanical Engineering

KW - Mechanics of Materials

KW - Steel grids

KW - Strength

UR - http://hdl.handle.net/10447/194046

UR - http://ascelibrary.org/journal/jsendh

M3 - Article

VL - 142

JO - Journal of Structural Engineering

JF - Journal of Structural Engineering

SN - 0733-9445

ER -