Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers
Aligning steel fibers is an effective way to improve the mechanical properties of steel fiber cementitious composites (SFRC). In this study, the magnetic field method was used to prepare the aligned hooked-end steel fiber cementitious composites (ASFRC) and the fracture behavior was investigated. In...
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/2/542 |
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| author | Sujjaid Khan Longbang Qing Iftikhar Ahmad Ru Mu Mengdi Bi |
| author_facet | Sujjaid Khan Longbang Qing Iftikhar Ahmad Ru Mu Mengdi Bi |
| author_sort | Sujjaid Khan |
| collection | DOAJ |
| description | Aligning steel fibers is an effective way to improve the mechanical properties of steel fiber cementitious composites (SFRC). In this study, the magnetic field method was used to prepare the aligned hooked-end steel fiber cementitious composites (ASFRC) and the fracture behavior was investigated. In order to achieve the alignment of steel fibers, the key parameters including the rheology of the mixture and magnetic induction of electromagnetic field were theoretically analyzed. The results showed that, compared with SFRC, the cracking load and the ultimate load of ASFRC were increased about 24–55% and 51–86%, respectively, depending on the fiber addition content. In addition, the flexural tensile strength and residual flexural strength of ASFRC were found to increase up to 105% and 100%, respectively. The orientation of steel fibers also has a significant effect on energy consumption. The fracture energy of ASFRC was 56–70% greater than SFRC and the reinforcement effect of hooked-end steel fiber was higher than straight steel fiber. The fibers in the fracture surface showed that not only was the number of fibers of ASFRC higher than that of SFRC, but also the orientation efficiency factor of ASFRC was superior to SFRC, which explains the improvement of fracture behavior of ASFRC. |
| first_indexed | 2024-03-10T01:03:36Z |
| format | Article |
| id | doaj.art-773e59932ce246a0bf39cb0aa7a4434c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:03:36Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-773e59932ce246a0bf39cb0aa7a4434c2023-11-23T14:30:51ZengMDPI AGMaterials1996-19442022-01-0115254210.3390/ma15020542Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel FibersSujjaid Khan0Longbang Qing1Iftikhar Ahmad2Ru Mu3Mengdi Bi4School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, ChinaAligning steel fibers is an effective way to improve the mechanical properties of steel fiber cementitious composites (SFRC). In this study, the magnetic field method was used to prepare the aligned hooked-end steel fiber cementitious composites (ASFRC) and the fracture behavior was investigated. In order to achieve the alignment of steel fibers, the key parameters including the rheology of the mixture and magnetic induction of electromagnetic field were theoretically analyzed. The results showed that, compared with SFRC, the cracking load and the ultimate load of ASFRC were increased about 24–55% and 51–86%, respectively, depending on the fiber addition content. In addition, the flexural tensile strength and residual flexural strength of ASFRC were found to increase up to 105% and 100%, respectively. The orientation of steel fibers also has a significant effect on energy consumption. The fracture energy of ASFRC was 56–70% greater than SFRC and the reinforcement effect of hooked-end steel fiber was higher than straight steel fiber. The fibers in the fracture surface showed that not only was the number of fibers of ASFRC higher than that of SFRC, but also the orientation efficiency factor of ASFRC was superior to SFRC, which explains the improvement of fracture behavior of ASFRC.https://www.mdpi.com/1996-1944/15/2/542steel fiber reinforced cementitious compositesaligned steel fiber concretemechanical propertiesfracture parametersfiber orientation efficiency factor |
| spellingShingle | Sujjaid Khan Longbang Qing Iftikhar Ahmad Ru Mu Mengdi Bi Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers Materials steel fiber reinforced cementitious composites aligned steel fiber concrete mechanical properties fracture parameters fiber orientation efficiency factor |
| title | Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers |
| title_full | Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers |
| title_fullStr | Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers |
| title_full_unstemmed | Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers |
| title_short | Investigation on Fracture Behavior of Cementitious Composites Reinforced with Aligned Hooked-End Steel Fibers |
| title_sort | investigation on fracture behavior of cementitious composites reinforced with aligned hooked end steel fibers |
| topic | steel fiber reinforced cementitious composites aligned steel fiber concrete mechanical properties fracture parameters fiber orientation efficiency factor |
| url | https://www.mdpi.com/1996-1944/15/2/542 |
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