3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement
<p dir="ltr">This study investigates the impact of varying steel fiber (SF) content (0%, 0.8%, 1.0%, and 1.2% by volume) on the mechanical and durability properties of 3D-printed Ca(OH)<sub>2</sub>-activated geopolymer concrete (GPC). The addition of 1.2% SF improved flex...
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| مؤلفون آخرون: | , , , , , , |
| منشور في: |
2025
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| الموضوعات: | |
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إضافة وسم
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| _version_ | 1864513537960837120 |
|---|---|
| author | Youssef Mortada (16810656) |
| author2 | Ahmad Hammoud (7440155) Laith Masoud (22391701) Mateusz Wyrzykowski (5274109) Davide Sirtoli (22391704) Pietro Lura (6861332) Bilal Mansoor (2541628) Eyad Masad (14153484) |
| author2_role | author author author author author author author |
| author_facet | Youssef Mortada (16810656) Ahmad Hammoud (7440155) Laith Masoud (22391701) Mateusz Wyrzykowski (5274109) Davide Sirtoli (22391704) Pietro Lura (6861332) Bilal Mansoor (2541628) Eyad Masad (14153484) |
| author_role | author |
| dc.creator.none.fl_str_mv | Youssef Mortada (16810656) Ahmad Hammoud (7440155) Laith Masoud (22391701) Mateusz Wyrzykowski (5274109) Davide Sirtoli (22391704) Pietro Lura (6861332) Bilal Mansoor (2541628) Eyad Masad (14153484) |
| dc.date.none.fl_str_mv | 2025-02-20T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1617/s11527-025-02600-5 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/3D_Printable_Ca_OH_sub_2_sub_-based_geopolymer_concrete_with_steel_fiber_reinforcement/30305755 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Civil engineering Materials engineering 3D printing Geopolymer concrete Steel fiber Durability Waste material |
| dc.title.none.fl_str_mv | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This study investigates the impact of varying steel fiber (SF) content (0%, 0.8%, 1.0%, and 1.2% by volume) on the mechanical and durability properties of 3D-printed Ca(OH)<sub>2</sub>-activated geopolymer concrete (GPC). The addition of 1.2% SF improved flexural strength by 69% at 7 days and 16% at 28 days, while tensile strength more than doubled to 3.75 MPa at 28 days. Although compressive strength remained unaffected at 43 MPa, SF enhanced interlayer bond strength by 20%, which is crucial for layer cohesion in 3D-printed structures. Additionally, the elastic modulus increased by 7%, contributing to improved stiffness. Durability assessments, including autogenous shrinkage and self-induced stress, indicated a slight reduction in shrinkage of SF-reinforced samples, with no significant effect on self-induced stress. Microstructural analysis using scanning electron microscopy (SEM) and X-ray micro-computed tomography (µCT) demonstrated the crack-bridging behavior of steel fibers, enhancing ductility and fracture resistance. There was a slight increase in porosity (5.34%) of SF-reinforced samples without negatively affecting their mechanical properties. Notably, SF improved early-age toughness and controlled crack propagation across printed layers, addressing a critical challenge in 3D-printed concrete. The novelty of this work lies in successfully reinforcing 3D-printed Ca(OH)<sub>2</sub>-activated GPC with recycled steel fibers, enhancing mechanical properties, interlayer bonding, and durability without compromising printability. This study offers a sustainable reinforcement strategy for 3D printing in construction.</p><h2>Other Information</h2><p dir="ltr">Published in: Materials and Structures<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1617/s11527-025-02600-5" target="_blank">https://dx.doi.org/10.1617/s11527-025-02600-5</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_963944df5f803cfcd9275cffe223a3c7 |
| identifier_str_mv | 10.1617/s11527-025-02600-5 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30305755 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcementYoussef Mortada (16810656)Ahmad Hammoud (7440155)Laith Masoud (22391701)Mateusz Wyrzykowski (5274109)Davide Sirtoli (22391704)Pietro Lura (6861332)Bilal Mansoor (2541628)Eyad Masad (14153484)EngineeringCivil engineeringMaterials engineering3D printingGeopolymer concreteSteel fiberDurability Waste material<p dir="ltr">This study investigates the impact of varying steel fiber (SF) content (0%, 0.8%, 1.0%, and 1.2% by volume) on the mechanical and durability properties of 3D-printed Ca(OH)<sub>2</sub>-activated geopolymer concrete (GPC). The addition of 1.2% SF improved flexural strength by 69% at 7 days and 16% at 28 days, while tensile strength more than doubled to 3.75 MPa at 28 days. Although compressive strength remained unaffected at 43 MPa, SF enhanced interlayer bond strength by 20%, which is crucial for layer cohesion in 3D-printed structures. Additionally, the elastic modulus increased by 7%, contributing to improved stiffness. Durability assessments, including autogenous shrinkage and self-induced stress, indicated a slight reduction in shrinkage of SF-reinforced samples, with no significant effect on self-induced stress. Microstructural analysis using scanning electron microscopy (SEM) and X-ray micro-computed tomography (µCT) demonstrated the crack-bridging behavior of steel fibers, enhancing ductility and fracture resistance. There was a slight increase in porosity (5.34%) of SF-reinforced samples without negatively affecting their mechanical properties. Notably, SF improved early-age toughness and controlled crack propagation across printed layers, addressing a critical challenge in 3D-printed concrete. The novelty of this work lies in successfully reinforcing 3D-printed Ca(OH)<sub>2</sub>-activated GPC with recycled steel fibers, enhancing mechanical properties, interlayer bonding, and durability without compromising printability. This study offers a sustainable reinforcement strategy for 3D printing in construction.</p><h2>Other Information</h2><p dir="ltr">Published in: Materials and Structures<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1617/s11527-025-02600-5" target="_blank">https://dx.doi.org/10.1617/s11527-025-02600-5</a></p>2025-02-20T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1617/s11527-025-02600-5https://figshare.com/articles/journal_contribution/3D_Printable_Ca_OH_sub_2_sub_-based_geopolymer_concrete_with_steel_fiber_reinforcement/30305755CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/303057552025-02-20T09:00:00Z |
| spellingShingle | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement Youssef Mortada (16810656) Engineering Civil engineering Materials engineering 3D printing Geopolymer concrete Steel fiber Durability Waste material |
| status_str | publishedVersion |
| title | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| title_full | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| title_fullStr | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| title_full_unstemmed | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| title_short | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| title_sort | 3D Printable Ca(OH)<sub>2</sub>-based geopolymer concrete with steel fiber reinforcement |
| topic | Engineering Civil engineering Materials engineering 3D printing Geopolymer concrete Steel fiber Durability Waste material |