Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials
<p>Recent growth in additive manufacturing (AM) or 3D printing in the construction field has motivated the development of various materials that vary in its composition and properties. This paper introduces, characterizes, and evaluates the performance of a sustainable and environmentally frie...
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| مؤلفون آخرون: | , , , , , |
| منشور في: |
2023
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| _version_ | 1864513562849837056 |
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| author | Youssef Mortada (16810656) |
| author2 | Eyad Masad (14153484) Reginald B. Kogbara (16810659) Bilal Mansoor (2541628) Thomas Seers (16810662) Ahmad Hammoud (7440155) Ayman Karaki (14779591) |
| author2_role | author author author author author author |
| author_facet | Youssef Mortada (16810656) Eyad Masad (14153484) Reginald B. Kogbara (16810659) Bilal Mansoor (2541628) Thomas Seers (16810662) Ahmad Hammoud (7440155) Ayman Karaki (14779591) |
| author_role | author |
| dc.creator.none.fl_str_mv | Youssef Mortada (16810656) Eyad Masad (14153484) Reginald B. Kogbara (16810659) Bilal Mansoor (2541628) Thomas Seers (16810662) Ahmad Hammoud (7440155) Ayman Karaki (14779591) |
| dc.date.none.fl_str_mv | 2023-12-01T00:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.cscm.2023.e02258 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Development_of_Ca_OH_sub_2_sub_-based_geopolymer_for_additive_manufacturing_using_construction_wastes_and_nanomaterials/23918409 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Chemical sciences Macromolecular and materials chemistry Engineering Materials engineering Nanotechnology Additive Manufacturing Geopolymer Sustainability Waste Nanomaterial |
| dc.title.none.fl_str_mv | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p>Recent growth in additive manufacturing (AM) or 3D printing in the construction field has motivated the development of various materials that vary in its composition and properties. This paper introduces, characterizes, and evaluates the performance of a sustainable and environmentally friendly geopolymer mixture composed of construction wastes. The geopolymer mixture has calcium hydroxide (Ca(OH)<sub>2</sub>) as the main alkaline activator and incorporates nanomaterials such as nano-silica and nano-clay to enhance its suitability for AM. The combined use of Ca(OH)<sub>2</sub> for alkali activation, and nanomaterials for tailoring the behavior of construction wastes for 3D printing, is novel and addresses the shortcomings of conventional alkaline activators. The paper includes the outcomes of the analysis of the mechanical properties, printability, and microstructure of the geopolymer mixture. The 28-day compressive strength of the mixture reached 42 MPa with ambient temperature curing, which is comparable to traditional geopolymers. The inclusion of 1 wt % of nano-silica accelerated the geopolymerization process and led to the largest (35 %) reduction in the setting time. Similarly, incorporating 1 wt % of nano-clay led to reduction of the thermal conductivity from 0.709 W/mK to 0.505 W/mK, due to the introduction of thermal barriers. The printability of the studied waste-based geopolymer mixture was validated through the successful fabrication of a 3D-printed model.</p> <h2>Other Information</h2> <p>Published in: Case Studies in Construction Materials<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cscm.2023.e02258" target="_blank">https://dx.doi.org/10.1016/j.cscm.2023.e02258</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_ba9502db3e7f7a64b0919f1c9569df09 |
| identifier_str_mv | 10.1016/j.cscm.2023.e02258 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/23918409 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterialsYoussef Mortada (16810656)Eyad Masad (14153484)Reginald B. Kogbara (16810659)Bilal Mansoor (2541628)Thomas Seers (16810662)Ahmad Hammoud (7440155)Ayman Karaki (14779591)Chemical sciencesMacromolecular and materials chemistryEngineeringMaterials engineeringNanotechnologyAdditive ManufacturingGeopolymerSustainabilityWasteNanomaterial<p>Recent growth in additive manufacturing (AM) or 3D printing in the construction field has motivated the development of various materials that vary in its composition and properties. This paper introduces, characterizes, and evaluates the performance of a sustainable and environmentally friendly geopolymer mixture composed of construction wastes. The geopolymer mixture has calcium hydroxide (Ca(OH)<sub>2</sub>) as the main alkaline activator and incorporates nanomaterials such as nano-silica and nano-clay to enhance its suitability for AM. The combined use of Ca(OH)<sub>2</sub> for alkali activation, and nanomaterials for tailoring the behavior of construction wastes for 3D printing, is novel and addresses the shortcomings of conventional alkaline activators. The paper includes the outcomes of the analysis of the mechanical properties, printability, and microstructure of the geopolymer mixture. The 28-day compressive strength of the mixture reached 42 MPa with ambient temperature curing, which is comparable to traditional geopolymers. The inclusion of 1 wt % of nano-silica accelerated the geopolymerization process and led to the largest (35 %) reduction in the setting time. Similarly, incorporating 1 wt % of nano-clay led to reduction of the thermal conductivity from 0.709 W/mK to 0.505 W/mK, due to the introduction of thermal barriers. The printability of the studied waste-based geopolymer mixture was validated through the successful fabrication of a 3D-printed model.</p> <h2>Other Information</h2> <p>Published in: Case Studies in Construction Materials<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br> See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cscm.2023.e02258" target="_blank">https://dx.doi.org/10.1016/j.cscm.2023.e02258</a></p>2023-12-01T00:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.cscm.2023.e02258https://figshare.com/articles/journal_contribution/Development_of_Ca_OH_sub_2_sub_-based_geopolymer_for_additive_manufacturing_using_construction_wastes_and_nanomaterials/23918409CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/239184092023-12-01T00:00:00Z |
| spellingShingle | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials Youssef Mortada (16810656) Chemical sciences Macromolecular and materials chemistry Engineering Materials engineering Nanotechnology Additive Manufacturing Geopolymer Sustainability Waste Nanomaterial |
| status_str | publishedVersion |
| title | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| title_full | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| title_fullStr | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| title_full_unstemmed | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| title_short | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| title_sort | Development of Ca(OH)<sub>2</sub>-based geopolymer for additive manufacturing using construction wastes and nanomaterials |
| topic | Chemical sciences Macromolecular and materials chemistry Engineering Materials engineering Nanotechnology Additive Manufacturing Geopolymer Sustainability Waste Nanomaterial |