Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing

Efficient load transmission between concrete and steel reinforcement by bonding action is a key factor in the process of the design procedure of bar-reinforced concrete structures. To enhance the bond strength of steel/concrete composites, the impact of graphene nanoplatelets (GnP) on the bond stres...

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Autores principales:	Fouad Ismail Ismail, Yassir M. Abbas, Nasir Shafiq, Galal Fares, Montasir Osman, Lotfi A. Hussain, Mohammad Iqbal Khan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	graphene nano platelets high-performance concrete bond stress bond stress-slip behavior pullout test failure mode Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/85af630a5e154c79922c9ae08830d7b4
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spelling	oai:doaj.org-article:85af630a5e154c79922c9ae08830d7b42021-11-25T18:15:59ZInvestigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing10.3390/ma142270541996-1944https://doaj.org/article/85af630a5e154c79922c9ae08830d7b42021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/7054https://doaj.org/toc/1996-1944Efficient load transmission between concrete and steel reinforcement by bonding action is a key factor in the process of the design procedure of bar-reinforced concrete structures. To enhance the bond strength of steel/concrete composites, the impact of graphene nanoplatelets (GnP) on the bond stress and bond stress–slip response of deformed reinforcement bars, embedded in high-performance concrete (HPC), was investigated using bar pullout tests. In the current study, 36 samples were produced and examined. The main variables were the percentages of GnP, the steel reinforcement bar diameter, and embedded length. Bond behavior, failure mode, and bond stress-slip response were studied. Based on the experimental findings, the inclusion of GnP had a significant favorable influence on the bar-matrix interactions due to the bridging action of GnP as a nano reinforcement. For 0.02 wt.% of GnP, the bond strength was enhanced by more than 41.28% and 53.90% for steel bar diameters of 10 and 16 mm, respectively. The HPC-GnP mixture displayed a reduction in the initial slippage in comparison to the control sample. The test findings were compared to the prediction models created by other researchers and the ACI 408R-12 code.Fouad Ismail IsmailYassir M. AbbasNasir ShafiqGalal FaresMontasir OsmanLotfi A. HussainMohammad Iqbal KhanMDPI AGarticlegraphene nano plateletshigh-performance concretebond stressbond stress-slip behaviorpullout testfailure modeTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 7054, p 7054 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	graphene nano platelets high-performance concrete bond stress bond stress-slip behavior pullout test failure mode Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	graphene nano platelets high-performance concrete bond stress bond stress-slip behavior pullout test failure mode Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Fouad Ismail Ismail Yassir M. Abbas Nasir Shafiq Galal Fares Montasir Osman Lotfi A. Hussain Mohammad Iqbal Khan Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
description	Efficient load transmission between concrete and steel reinforcement by bonding action is a key factor in the process of the design procedure of bar-reinforced concrete structures. To enhance the bond strength of steel/concrete composites, the impact of graphene nanoplatelets (GnP) on the bond stress and bond stress–slip response of deformed reinforcement bars, embedded in high-performance concrete (HPC), was investigated using bar pullout tests. In the current study, 36 samples were produced and examined. The main variables were the percentages of GnP, the steel reinforcement bar diameter, and embedded length. Bond behavior, failure mode, and bond stress-slip response were studied. Based on the experimental findings, the inclusion of GnP had a significant favorable influence on the bar-matrix interactions due to the bridging action of GnP as a nano reinforcement. For 0.02 wt.% of GnP, the bond strength was enhanced by more than 41.28% and 53.90% for steel bar diameters of 10 and 16 mm, respectively. The HPC-GnP mixture displayed a reduction in the initial slippage in comparison to the control sample. The test findings were compared to the prediction models created by other researchers and the ACI 408R-12 code.
format	article
author	Fouad Ismail Ismail Yassir M. Abbas Nasir Shafiq Galal Fares Montasir Osman Lotfi A. Hussain Mohammad Iqbal Khan
author_facet	Fouad Ismail Ismail Yassir M. Abbas Nasir Shafiq Galal Fares Montasir Osman Lotfi A. Hussain Mohammad Iqbal Khan
author_sort	Fouad Ismail Ismail
title	Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
title_short	Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
title_full	Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
title_fullStr	Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
title_full_unstemmed	Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing
title_sort	investigation of the impact of graphene nanoplatelets (gnp) on the bond stress of high-performance concrete using pullout testing
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/85af630a5e154c79922c9ae08830d7b4
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Investigation of the Impact of Graphene Nanoplatelets (GnP) on the Bond Stress of High-Performance Concrete Using Pullout Testing

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