Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams
Building construction contributes a significant portion to the global consumption of energy and greenhouse gas (GHG) emissions, and decarbonization has become one of the main targets. This has turned much attention to renewable materials, particularly timber construction. Wood is a natural composite...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
|
| Series: | Journal of Composites Science |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-477X/6/8/239 |
| _version_ | 1797432026492567552 |
|---|---|
| author | Doreen Steven Mlote Michael Budig |
| author_facet | Doreen Steven Mlote Michael Budig |
| author_sort | Doreen Steven Mlote |
| collection | DOAJ |
| description | Building construction contributes a significant portion to the global consumption of energy and greenhouse gas (GHG) emissions, and decarbonization has become one of the main targets. This has turned much attention to renewable materials, particularly timber construction. Wood is a natural composite, and it causes challenges in its natural state due to its mechanical properties and functionality, which has constrained its use in construction. Laminating wood sections into glue-laminated (glulam) and cross-laminated timber (CLT) components overcomes limitations in dimensions and inconsistencies in its properties. We went beyond these technologies and explored the potential of combining timber of the radiata pine species with synthetic fibers, aiming for hybrid natural–synthetic composite beams. This research illustrated various reinforcement mechanisms and analyzed their structural properties. The results from the experiments showed that carbon fiber-reinforced timber composites have up to 49% additional increase in load-bearing capacity compared to unreinforced beams. An identical amount of strain required less stress, and the composite portrayed a metal-like ductility property, a characteristic referred to as pseudo-ductility. It reduces the material consumption in beams through a more efficient use of materials, particularly around compression areas before tensile rupture. The resulting composites are sustainable yet structurally capable, contributing to the reduction in CO<sub>2</sub> emissions in timber construction systems. |
| first_indexed | 2024-03-09T09:55:19Z |
| format | Article |
| id | doaj.art-5f16e03fd74d4bb5971358da00d19386 |
| institution | Directory Open Access Journal |
| issn | 2504-477X |
| language | English |
| last_indexed | 2024-03-09T09:55:19Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Composites Science |
| spelling | doaj.art-5f16e03fd74d4bb5971358da00d193862023-12-01T23:51:09ZengMDPI AGJournal of Composites Science2504-477X2022-08-016823910.3390/jcs6080239Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber BeamsDoreen Steven Mlote0Michael Budig1Renewable Architecture Lab (R<sup>E</sup>AL), Singapore University of Technology and Design (SUTD), Architecture and Sustainable Development Pillar (ASD), Singapore 487372, SingaporeRenewable Architecture Lab (R<sup>E</sup>AL), Singapore University of Technology and Design (SUTD), Architecture and Sustainable Development Pillar (ASD), Singapore 487372, SingaporeBuilding construction contributes a significant portion to the global consumption of energy and greenhouse gas (GHG) emissions, and decarbonization has become one of the main targets. This has turned much attention to renewable materials, particularly timber construction. Wood is a natural composite, and it causes challenges in its natural state due to its mechanical properties and functionality, which has constrained its use in construction. Laminating wood sections into glue-laminated (glulam) and cross-laminated timber (CLT) components overcomes limitations in dimensions and inconsistencies in its properties. We went beyond these technologies and explored the potential of combining timber of the radiata pine species with synthetic fibers, aiming for hybrid natural–synthetic composite beams. This research illustrated various reinforcement mechanisms and analyzed their structural properties. The results from the experiments showed that carbon fiber-reinforced timber composites have up to 49% additional increase in load-bearing capacity compared to unreinforced beams. An identical amount of strain required less stress, and the composite portrayed a metal-like ductility property, a characteristic referred to as pseudo-ductility. It reduces the material consumption in beams through a more efficient use of materials, particularly around compression areas before tensile rupture. The resulting composites are sustainable yet structurally capable, contributing to the reduction in CO<sub>2</sub> emissions in timber construction systems.https://www.mdpi.com/2504-477X/6/8/239pseudo-ductilityfiber-reinforced timbersustainabilitycompositeload-bearing capacity |
| spellingShingle | Doreen Steven Mlote Michael Budig Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams Journal of Composites Science pseudo-ductility fiber-reinforced timber sustainability composite load-bearing capacity |
| title | Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams |
| title_full | Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams |
| title_fullStr | Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams |
| title_full_unstemmed | Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams |
| title_short | Load-Bearing Capacities and Pseudo-Ductility of Carbon Fiber-Reinforced New Zealand Pine Timber Beams |
| title_sort | load bearing capacities and pseudo ductility of carbon fiber reinforced new zealand pine timber beams |
| topic | pseudo-ductility fiber-reinforced timber sustainability composite load-bearing capacity |
| url | https://www.mdpi.com/2504-477X/6/8/239 |
| work_keys_str_mv | AT doreenstevenmlote loadbearingcapacitiesandpseudoductilityofcarbonfiberreinforcednewzealandpinetimberbeams AT michaelbudig loadbearingcapacitiesandpseudoductilityofcarbonfiberreinforcednewzealandpinetimberbeams |