Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites
Ultra-high-performance concrete (UHPC) is a promising cementitious composite to produce lightweight and high-performance structures. Steel fibres are an essential constituting material of UHPC to prevent the brittle failure of UHPC, but the high cost steel fibres impedes the wider application of UHP...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523003005 |
| _version_ | 1797798895914319872 |
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| author | X.M. You L.B. Lin Bing Fu Yu Xiang |
| author_facet | X.M. You L.B. Lin Bing Fu Yu Xiang |
| author_sort | X.M. You |
| collection | DOAJ |
| description | Ultra-high-performance concrete (UHPC) is a promising cementitious composite to produce lightweight and high-performance structures. Steel fibres are an essential constituting material of UHPC to prevent the brittle failure of UHPC, but the high cost steel fibres impedes the wider application of UHPC to some extent. This paper proposes a concept to produce UHPC reinforced with macro fibres processed from waste glass-fibre-reinforced polymer (GFRP) composites, therefore addressing two issues of the high cost of UHPC as well as the difficulty in disposal of waste GFRP simultaneously. A series of tests have been carried out to investigate the effect of adding macro fibres on the properties of UHPC. The test results show that the incorporation of macro fibres leads to a loss of the workability and a reduction of up to 21.8 % in the compressive strength, but improves the flexural strength and flexural toughness greatly by up to 27.9 % and 46.9 times, respectively. The tensile constitutive relationship has been converted from the results of the bending tests through inverse analyses. The proposed concept of producing UHPC with recycled macro fibres contributes to lowering the price of UHPC, whose properties are comparable to that of UHPC with steel fibres, and establishing an effective routine to valorise the waste GFRP. |
| first_indexed | 2024-03-13T04:11:48Z |
| format | Article |
| id | doaj.art-b839077a94e54ba5873b0eeb6d29a128 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:48Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-b839077a94e54ba5873b0eeb6d29a1282023-06-21T06:54:35ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e02120Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP compositesX.M. You0L.B. Lin1Bing Fu2Yu Xiang3School of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, ChinaSchool of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, ChinaSchool of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, China; MOE Key Lab of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou 510632, China; Corresponding author at: School of Mechanics and Construction Engineering, Jinan University, Guangzhou 510632, China.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China; Corresponding author.Ultra-high-performance concrete (UHPC) is a promising cementitious composite to produce lightweight and high-performance structures. Steel fibres are an essential constituting material of UHPC to prevent the brittle failure of UHPC, but the high cost steel fibres impedes the wider application of UHPC to some extent. This paper proposes a concept to produce UHPC reinforced with macro fibres processed from waste glass-fibre-reinforced polymer (GFRP) composites, therefore addressing two issues of the high cost of UHPC as well as the difficulty in disposal of waste GFRP simultaneously. A series of tests have been carried out to investigate the effect of adding macro fibres on the properties of UHPC. The test results show that the incorporation of macro fibres leads to a loss of the workability and a reduction of up to 21.8 % in the compressive strength, but improves the flexural strength and flexural toughness greatly by up to 27.9 % and 46.9 times, respectively. The tensile constitutive relationship has been converted from the results of the bending tests through inverse analyses. The proposed concept of producing UHPC with recycled macro fibres contributes to lowering the price of UHPC, whose properties are comparable to that of UHPC with steel fibres, and establishing an effective routine to valorise the waste GFRP.http://www.sciencedirect.com/science/article/pii/S2214509523003005Ultra-high-performance concrete (UHPC)GFRP wasteMechanical recyclingFibre-reinforced concreteMacro fibres |
| spellingShingle | X.M. You L.B. Lin Bing Fu Yu Xiang Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites Case Studies in Construction Materials Ultra-high-performance concrete (UHPC) GFRP waste Mechanical recycling Fibre-reinforced concrete Macro fibres |
| title | Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites |
| title_full | Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites |
| title_fullStr | Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites |
| title_full_unstemmed | Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites |
| title_short | Ultra-high performance concrete reinforced with macro fibres recycled from waste GFRP composites |
| title_sort | ultra high performance concrete reinforced with macro fibres recycled from waste gfrp composites |
| topic | Ultra-high-performance concrete (UHPC) GFRP waste Mechanical recycling Fibre-reinforced concrete Macro fibres |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523003005 |
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