Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete
This paper studied the influence of fiber volume fraction (<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula>), f...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-07-01
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| Series: | Fibers |
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| Online Access: | https://www.mdpi.com/2079-6439/7/7/67 |
| _version_ | 1828120757706686464 |
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| author | Manish Roy Corey Hollmann Kay Wille |
| author_facet | Manish Roy Corey Hollmann Kay Wille |
| author_sort | Manish Roy |
| collection | DOAJ |
| description | This paper studied the influence of fiber volume fraction (<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula>), fiber orientation, and type of reinforcement bar (rebar) on the uniaxial tensile behavior of rebar-reinforced strain-hardening ultra-high performance concrete (UHPC). It was observed that the tensile strength increased with the increase in <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula>. When <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula> was kept constant at 1%, rebar-reinforced UHPC with fibers aligned with the load direction registered the highest strength and that with fibers oriented perpendicular to the load direction recorded the lowest strength. The strength of the composite with random fibers laid in between. Moreover, the strength, as well as the ductility, increased when the normal strength grade 60 rebars embedded in UHPC were replaced with high strength grade 100 rebars with all other conditions remaining unchanged. In addition, this paper discusses the potential of sudden failure of rebar-reinforced strain hardening UHPC and it is suggested that the composite attains a minimum strain of 1% at the peak stress to enable the members to have sufficient ductility. |
| first_indexed | 2024-04-11T14:11:09Z |
| format | Article |
| id | doaj.art-52c8dca0f4dd44379bbf4c52a4b70453 |
| institution | Directory Open Access Journal |
| issn | 2079-6439 |
| language | English |
| last_indexed | 2024-04-11T14:11:09Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fibers |
| spelling | doaj.art-52c8dca0f4dd44379bbf4c52a4b704532022-12-22T04:19:42ZengMDPI AGFibers2079-64392019-07-01776710.3390/fib7070067fib7070067Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance ConcreteManish Roy0Corey Hollmann1Kay Wille2Civil & Environmental Engineering Department, University of Connecticut, 261 Glenbrook Road Unit 3037, Storrs, CT 06269-3037, USAMichael Horton Associates, Inc., Branford, CT 06405, USACivil & Environmental Engineering Department, University of Connecticut, 261 Glenbrook Road Unit 3037, Storrs, CT 06269-3037, USAThis paper studied the influence of fiber volume fraction (<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula>), fiber orientation, and type of reinforcement bar (rebar) on the uniaxial tensile behavior of rebar-reinforced strain-hardening ultra-high performance concrete (UHPC). It was observed that the tensile strength increased with the increase in <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula>. When <inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>V</mi> <mi>f</mi> </msub> </mrow> </semantics> </math> </inline-formula> was kept constant at 1%, rebar-reinforced UHPC with fibers aligned with the load direction registered the highest strength and that with fibers oriented perpendicular to the load direction recorded the lowest strength. The strength of the composite with random fibers laid in between. Moreover, the strength, as well as the ductility, increased when the normal strength grade 60 rebars embedded in UHPC were replaced with high strength grade 100 rebars with all other conditions remaining unchanged. In addition, this paper discusses the potential of sudden failure of rebar-reinforced strain hardening UHPC and it is suggested that the composite attains a minimum strain of 1% at the peak stress to enable the members to have sufficient ductility.https://www.mdpi.com/2079-6439/7/7/67UHPCrebarfibertensionorientationcompositeductility |
| spellingShingle | Manish Roy Corey Hollmann Kay Wille Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete Fibers UHPC rebar fiber tension orientation composite ductility |
| title | Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete |
| title_full | Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete |
| title_fullStr | Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete |
| title_full_unstemmed | Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete |
| title_short | Influence of Fiber Volume Fraction and Fiber Orientation on the Uniaxial Tensile Behavior of Rebar-Reinforced Ultra-High Performance Concrete |
| title_sort | influence of fiber volume fraction and fiber orientation on the uniaxial tensile behavior of rebar reinforced ultra high performance concrete |
| topic | UHPC rebar fiber tension orientation composite ductility |
| url | https://www.mdpi.com/2079-6439/7/7/67 |
| work_keys_str_mv | AT manishroy influenceoffibervolumefractionandfiberorientationontheuniaxialtensilebehaviorofrebarreinforcedultrahighperformanceconcrete AT coreyhollmann influenceoffibervolumefractionandfiberorientationontheuniaxialtensilebehaviorofrebarreinforcedultrahighperformanceconcrete AT kaywille influenceoffibervolumefractionandfiberorientationontheuniaxialtensilebehaviorofrebarreinforcedultrahighperformanceconcrete |