Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC

Reliable bond of steel fiber in concrete is a key problem relating to the reinforcing effect of steel fiber on concrete matrix and for the guide in significance for the optimal design of the geometry and mechanical properties of steel fiber. In this paper, on the basis of multi-indices of evaluation...

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Autores principales:	Xinxin Ding, Haibin Geng, Minglei Zhao, Zhen Chen, Jie Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pull-out behavior deformed steel fiber wet-sieved mortars bond strength pull-out energy pull-out toughness Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f3fb8a3bce1048f9a1bd3d7d0cb2525a
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spelling	oai:doaj.org-article:f3fb8a3bce1048f9a1bd3d7d0cb2525a2021-11-11T15:12:32ZSynergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC10.3390/app1121101442076-3417https://doaj.org/article/f3fb8a3bce1048f9a1bd3d7d0cb2525a2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10144https://doaj.org/toc/2076-3417Reliable bond of steel fiber in concrete is a key problem relating to the reinforcing effect of steel fiber on concrete matrix and for the guide in significance for the optimal design of the geometry and mechanical properties of steel fiber. In this paper, on the basis of multi-indices of evaluation for the bond properties of single hooked-end steel fiber, the indices for the evaluation of synergistic bond properties of different deformed steel fibers are proposed. The pull-out tests were carried out for different deformed steel fibers embedded in mortar wet-sieved from self-compacting SFRC with manufactured sand. Fourteen types of steel fibers were used, including six hooked-end, two crimped, four indentation, one milling, and one large-end. The bond strength, bond energy, and bond toughness of single and per unit weight steel fiber were evaluated with the correspondence to the loading status of cracking resistance, normal serviceability, and ultimate bearing capacity of concrete. Results show that the deformed steel fibers presented different bond behaviors, hooked-end, and crimped steel fibers with circular cross-sections and a tensile strength of higher than 1150 MPa have excellent effects of strengthening, energy dissipation, and toughening capacity on self-compacting concrete with a cubic compressive strength of 60 MPa at normal serviceability and ultimate bearing capacity. Indentation, milling, and large-end steel fibers are more suitable for reinforcing the concrete strength due to the rigid bond before concrete cracking. The synergistic working of steel fibers with concrete matrix should be concerned to realize the effects of only or simultaneously reinforcing the strength and toughness of concrete.Xinxin DingHaibin GengMinglei ZhaoZhen ChenJie LiMDPI AGarticlepull-out behaviordeformed steel fiberwet-sieved mortarsbond strengthpull-out energypull-out toughnessTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10144, p 10144 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pull-out behavior deformed steel fiber wet-sieved mortars bond strength pull-out energy pull-out toughness Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	pull-out behavior deformed steel fiber wet-sieved mortars bond strength pull-out energy pull-out toughness Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Xinxin Ding Haibin Geng Minglei Zhao Zhen Chen Jie Li Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
description	Reliable bond of steel fiber in concrete is a key problem relating to the reinforcing effect of steel fiber on concrete matrix and for the guide in significance for the optimal design of the geometry and mechanical properties of steel fiber. In this paper, on the basis of multi-indices of evaluation for the bond properties of single hooked-end steel fiber, the indices for the evaluation of synergistic bond properties of different deformed steel fibers are proposed. The pull-out tests were carried out for different deformed steel fibers embedded in mortar wet-sieved from self-compacting SFRC with manufactured sand. Fourteen types of steel fibers were used, including six hooked-end, two crimped, four indentation, one milling, and one large-end. The bond strength, bond energy, and bond toughness of single and per unit weight steel fiber were evaluated with the correspondence to the loading status of cracking resistance, normal serviceability, and ultimate bearing capacity of concrete. Results show that the deformed steel fibers presented different bond behaviors, hooked-end, and crimped steel fibers with circular cross-sections and a tensile strength of higher than 1150 MPa have excellent effects of strengthening, energy dissipation, and toughening capacity on self-compacting concrete with a cubic compressive strength of 60 MPa at normal serviceability and ultimate bearing capacity. Indentation, milling, and large-end steel fibers are more suitable for reinforcing the concrete strength due to the rigid bond before concrete cracking. The synergistic working of steel fibers with concrete matrix should be concerned to realize the effects of only or simultaneously reinforcing the strength and toughness of concrete.
format	article
author	Xinxin Ding Haibin Geng Minglei Zhao Zhen Chen Jie Li
author_facet	Xinxin Ding Haibin Geng Minglei Zhao Zhen Chen Jie Li
author_sort	Xinxin Ding
title	Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
title_short	Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
title_full	Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
title_fullStr	Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
title_full_unstemmed	Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC
title_sort	synergistic bond properties of different deformed steel fibers embedded in mortars wet-sieved from self-compacting sfrc
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f3fb8a3bce1048f9a1bd3d7d0cb2525a
work_keys_str_mv	AT xinxinding synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT haibingeng synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT mingleizhao synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT zhenchen synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT jieli synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc
_version_	1718436712319811584

Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRC

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