Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC)
Ultra-high performance concrete (UHPC) is a kind of cement-based material with ultra-high strength, high toughness and excellent durability. However, the tensile strain capacity of UHPC is often below 0.5%, and the mode of single crack failure is the main failure pattern, which limits the developmen...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/24/8734 |
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| author | Xin Zhao Lei Cai Xiaohua Ji Wei Zeng Jintao Liu |
| author_facet | Xin Zhao Lei Cai Xiaohua Ji Wei Zeng Jintao Liu |
| author_sort | Xin Zhao |
| collection | DOAJ |
| description | Ultra-high performance concrete (UHPC) is a kind of cement-based material with ultra-high strength, high toughness and excellent durability. However, the tensile strain capacity of UHPC is often below 0.5%, and the mode of single crack failure is the main failure pattern, which limits the development of UHPC. In order to overcome the weakness of the relatively low strain capacity of UHPC, five types of polyethylene (PE) fibers with different geometrical and mechanical parameters (length, diameter and elastic modulus) were added into the matrix, and the corresponding mechanical behavior was investigated. The experimental results showed that the high fiber length and fiber diameter of PE fibers are a benefit for the compressive strength and tensile strength of UHPC. The increase of the fiber diameter and elastic modulus remarkably attributed to the increase in the tensile strain capacity of UHPC. With the increase of the fiber diameter and elastic modulus, the overall energy absorption capacity <i>G</i> and the energy absorption capacity of the substrate prior to the softening section <i>g</i><sub>a</sub> of UHPC were both enhanced. The diameter of PE fiber was the main factor affecting the energy consumption of UHPC. Among the five types of PE fiber, <i>PF</i> fiber (<i>PF</i> fiber is PF type polyethylene fiber; Fiber length: 15 mm; Fiber diameter: 27 μm; Elastic Modulus: 117 GPa) is the optimal fiber to increase the tensile mechanical behavior of UHPC. |
| first_indexed | 2024-03-09T16:09:57Z |
| format | Article |
| id | doaj.art-5987256e847242baa37c2bc58c59bb86 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T16:09:57Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5987256e847242baa37c2bc58c59bb862023-11-24T16:20:41ZengMDPI AGMaterials1996-19442022-12-011524873410.3390/ma15248734Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC)Xin Zhao0Lei Cai1Xiaohua Ji2Wei Zeng3Jintao Liu4School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaSchool of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaSchool of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaCollege of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaUltra-high performance concrete (UHPC) is a kind of cement-based material with ultra-high strength, high toughness and excellent durability. However, the tensile strain capacity of UHPC is often below 0.5%, and the mode of single crack failure is the main failure pattern, which limits the development of UHPC. In order to overcome the weakness of the relatively low strain capacity of UHPC, five types of polyethylene (PE) fibers with different geometrical and mechanical parameters (length, diameter and elastic modulus) were added into the matrix, and the corresponding mechanical behavior was investigated. The experimental results showed that the high fiber length and fiber diameter of PE fibers are a benefit for the compressive strength and tensile strength of UHPC. The increase of the fiber diameter and elastic modulus remarkably attributed to the increase in the tensile strain capacity of UHPC. With the increase of the fiber diameter and elastic modulus, the overall energy absorption capacity <i>G</i> and the energy absorption capacity of the substrate prior to the softening section <i>g</i><sub>a</sub> of UHPC were both enhanced. The diameter of PE fiber was the main factor affecting the energy consumption of UHPC. Among the five types of PE fiber, <i>PF</i> fiber (<i>PF</i> fiber is PF type polyethylene fiber; Fiber length: 15 mm; Fiber diameter: 27 μm; Elastic Modulus: 117 GPa) is the optimal fiber to increase the tensile mechanical behavior of UHPC.https://www.mdpi.com/1996-1944/15/24/8734UHPCpolyethylene fibertensile mechanical behavioroptimum fiber |
| spellingShingle | Xin Zhao Lei Cai Xiaohua Ji Wei Zeng Jintao Liu Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) Materials UHPC polyethylene fiber tensile mechanical behavior optimum fiber |
| title | Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) |
| title_full | Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) |
| title_fullStr | Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) |
| title_full_unstemmed | Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) |
| title_short | Mechanical Properties of Polyethylene Fiber Reinforced Ultra High Performance Concrete (UHPC) |
| title_sort | mechanical properties of polyethylene fiber reinforced ultra high performance concrete uhpc |
| topic | UHPC polyethylene fiber tensile mechanical behavior optimum fiber |
| url | https://www.mdpi.com/1996-1944/15/24/8734 |
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