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...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/21/10144 |
| _version_ | 1797512822270197760 |
|---|---|
| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-10T06:07:05Z |
| format | Article |
| id | doaj.art-f3fb8a3bce1048f9a1bd3d7d0cb2525a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T06:07:05Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f3fb8a3bce1048f9a1bd3d7d0cb2525a2023-11-22T20:28:28ZengMDPI AGApplied Sciences2076-34172021-10-0111211014410.3390/app112110144Synergistic Bond Properties of Different Deformed Steel Fibers Embedded in Mortars Wet-Sieved from Self-Compacting SFRCXinxin Ding0Haibin Geng1Minglei Zhao2Zhen Chen3Jie Li4International Joint Research Lab for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, No. 36 Beihuan Road, Zhengzhou 450045, ChinaInternational Joint Research Lab for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, No. 36 Beihuan Road, Zhengzhou 450045, ChinaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaInternational Joint Research Lab for Eco-Building Materials and Engineering of Henan, School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, No. 36 Beihuan Road, Zhengzhou 450045, ChinaSchool of Engineering, RMIT University, Melbourne, VIC 3001, AustraliaReliable 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.https://www.mdpi.com/2076-3417/11/21/10144pull-out behaviordeformed steel fiberwet-sieved mortarsbond strengthpull-out energypull-out toughness |
| spellingShingle | 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 Applied Sciences pull-out behavior deformed steel fiber wet-sieved mortars bond strength pull-out energy pull-out toughness |
| title | 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_short | 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 |
| topic | pull-out behavior deformed steel fiber wet-sieved mortars bond strength pull-out energy pull-out toughness |
| url | https://www.mdpi.com/2076-3417/11/21/10144 |
| work_keys_str_mv | AT xinxinding synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT haibingeng synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT mingleizhao synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT zhenchen synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc AT jieli synergisticbondpropertiesofdifferentdeformedsteelfibersembeddedinmortarswetsievedfromselfcompactingsfrc |