Effect of Steel-Reinforced Grout Confinement on Concrete Square and Cylindrical Columns

Seyedmohammad  Kahangi Shahreza; Giulia Baietti; Giovanni Quartarone; Mattia Santandrea; Christian Carloni

doi:10.14359/51725842

Effect of Steel-Reinforced Grout Confinement on Concrete Square and Cylindrical Columns

Seyedmohammad Kahangi Shahreza, Giulia Baietti, Giovanni Quartarone, Mattia Santandrea, Christian Carloni

University of Bologna

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

Sammanfattning

This paper presents an investigation on the compressive behavior of plain concrete columns confined with steel-reinforced grout (SRG) composites. The test parameters include size and crosssectional shape (square or circular) of the columns, and number of layers (one or two) and density (low or medium density) of the steel fiber sheet. Out of 46 specimens herein presented, 33 were confined with SRG, and the remaining 13 columns were left unconfined for comparison. The results indicate that application of SRG composites improves both the average strength and the ultimate strain of confined specimens with respect to the control (unconfined) columns. The best performance in terms of strength and ultimate strain increase with respect to the control columns is obtained for small square and cylindrical columns confined with two layers of low-density fiber sheet.

Originalspråk	engelska
Sidor (från-till)	97-108
Tidskrift	ACI Structural Journal
Volym	117
Nummer	5
DOI	https://doi.org/10.14359/51725842
Status	Published - 2020 sep. 1
Externt publicerad	Ja

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10.14359/51725842

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title = "Effect of Steel-Reinforced Grout Confinement on Concrete Square and Cylindrical Columns",

abstract = "This paper presents an investigation on the compressive behavior of plain concrete columns confined with steel-reinforced grout (SRG) composites. The test parameters include size and crosssectional shape (square or circular) of the columns, and number of layers (one or two) and density (low or medium density) of the steel fiber sheet. Out of 46 specimens herein presented, 33 were confined with SRG, and the remaining 13 columns were left unconfined for comparison. The results indicate that application of SRG composites improves both the average strength and the ultimate strain of confined specimens with respect to the control (unconfined) columns. The best performance in terms of strength and ultimate strain increase with respect to the control columns is obtained for small square and cylindrical columns confined with two layers of low-density fiber sheet.",

keywords = "Compressive strength, Confinement, energy absorption, Size effect, steel-reinforced grout",

author = "{Kahangi Shahreza}, Seyedmohammad and Giulia Baietti and Giovanni Quartarone and Mattia Santandrea and Christian Carloni",

year = "2020",

month = sep,

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doi = "10.14359/51725842",

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volume = "117",

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publisher = "American Concrete Institute",

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}

TY - JOUR

T1 - Effect of Steel-Reinforced Grout Confinement on Concrete Square and Cylindrical Columns

AU - Kahangi Shahreza, Seyedmohammad

AU - Baietti, Giulia

AU - Quartarone, Giovanni

AU - Santandrea, Mattia

AU - Carloni, Christian

PY - 2020/9/1

Y1 - 2020/9/1

N2 - This paper presents an investigation on the compressive behavior of plain concrete columns confined with steel-reinforced grout (SRG) composites. The test parameters include size and crosssectional shape (square or circular) of the columns, and number of layers (one or two) and density (low or medium density) of the steel fiber sheet. Out of 46 specimens herein presented, 33 were confined with SRG, and the remaining 13 columns were left unconfined for comparison. The results indicate that application of SRG composites improves both the average strength and the ultimate strain of confined specimens with respect to the control (unconfined) columns. The best performance in terms of strength and ultimate strain increase with respect to the control columns is obtained for small square and cylindrical columns confined with two layers of low-density fiber sheet.

AB - This paper presents an investigation on the compressive behavior of plain concrete columns confined with steel-reinforced grout (SRG) composites. The test parameters include size and crosssectional shape (square or circular) of the columns, and number of layers (one or two) and density (low or medium density) of the steel fiber sheet. Out of 46 specimens herein presented, 33 were confined with SRG, and the remaining 13 columns were left unconfined for comparison. The results indicate that application of SRG composites improves both the average strength and the ultimate strain of confined specimens with respect to the control (unconfined) columns. The best performance in terms of strength and ultimate strain increase with respect to the control columns is obtained for small square and cylindrical columns confined with two layers of low-density fiber sheet.

KW - Compressive strength

KW - Confinement

KW - energy absorption

KW - Size effect

KW - steel-reinforced grout

U2 - 10.14359/51725842

DO - 10.14359/51725842

M3 - Article

SN - 0889-3241

VL - 117

SP - 97

EP - 108

JO - ACI Structural Journal

JF - ACI Structural Journal

IS - 5

ER -

Effect of Steel-Reinforced Grout Confinement on Concrete Square and Cylindrical Columns

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