TY - GEN
T1 - The behavior of concrete columns confined by UHP-FRCC jacketing
AU - Fantilli, Alessandro P.
AU - Nishiwaki, Tomoya
AU - Lisi, Valerio
AU - Longo, Monica
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 26289186 and by the Italian Ministry of Education (PRIN 2015).
Publisher Copyright:
© 2020 American Concrete Institute. All rights reserved.
PY - 2020/11/3
Y1 - 2020/11/3
N2 - Ultra-High Performance - Fiber Reinforced Cementitious Composites (UHP-FRCC) show excellent mechanical performances, and therefore can be effectively used to retrofit concrete structures. Similarly to the traditional Reinforced Concrete (RC) jacketing, also when a layer of UHP-FRCC is applied on an existing column a sort of confinement can be obtained. Accordingly, the purpose of this study is to investigate the performances of plain concrete cylinders, confined by UHP-FRCC and subjected to uniaxial compression. In some of the layers, high volume fly ash has also been used to replace part of the cement and reduce the environmental impact. As a result, the compressive strength of the concrete core can be enhanced by the presence of UHP-FRCC layer, but when partially using fly-ash, the confinement effect of the jacket reduced. To determine the best solution among the different proposed options, the eco-mechanical analysis was also carried out.
AB - Ultra-High Performance - Fiber Reinforced Cementitious Composites (UHP-FRCC) show excellent mechanical performances, and therefore can be effectively used to retrofit concrete structures. Similarly to the traditional Reinforced Concrete (RC) jacketing, also when a layer of UHP-FRCC is applied on an existing column a sort of confinement can be obtained. Accordingly, the purpose of this study is to investigate the performances of plain concrete cylinders, confined by UHP-FRCC and subjected to uniaxial compression. In some of the layers, high volume fly ash has also been used to replace part of the cement and reduce the environmental impact. As a result, the compressive strength of the concrete core can be enhanced by the presence of UHP-FRCC layer, but when partially using fly-ash, the confinement effect of the jacket reduced. To determine the best solution among the different proposed options, the eco-mechanical analysis was also carried out.
KW - Confined concrete
KW - Ecological properties
KW - High Volume Fly Ash (HVFA)
KW - Mechanical properties
KW - Ultra-High Performance - Fiber Reinforced Cementitious Composites (UHP-FRCC)
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U2 - 10.35789/fib.BULL.0095.Ch44
DO - 10.35789/fib.BULL.0095.Ch44
M3 - Conference contribution
AN - SCOPUS:85110307923
T3 - American Concrete Institute, ACI Special Publication
SP - 432
EP - 441
BT - Fibre Reinforced Concrete
A2 - Massicotte, Bruno
A2 - Mobasher, Barzin
A2 - Minelli, Fausto
A2 - Plizzari, Giovanni
PB - American Concrete Institute
T2 - 3rd ACI-fib-RILEM International Workshop on Fibre Reinforced Concrete: From Design to Structural Applications, FRC 2018
Y2 - 28 July 2018 through 30 July 2018
ER -