Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa
Many researchers have tried to increase the porosity of cement-based materials for different applications, but a limitation of the existing technology is that it is difficult to achieve more than 30 MPa compressive strength for materials that have a porosity of more than 30%. To overcome the decreas...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542301565X |
| _version_ | 1797745187805462528 |
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| author | Siyu Wu Kebede Alemayehu Moges Prabhat Vashistha Sukhoon Pyo |
| author_facet | Siyu Wu Kebede Alemayehu Moges Prabhat Vashistha Sukhoon Pyo |
| author_sort | Siyu Wu |
| collection | DOAJ |
| description | Many researchers have tried to increase the porosity of cement-based materials for different applications, but a limitation of the existing technology is that it is difficult to achieve more than 30 MPa compressive strength for materials that have a porosity of more than 30%. To overcome the decrease in compressive strength, some studies have developed fly ash-based foam geopolymers with silica fume as the foaming agent. However, this material requires heat curing and has a rapid setting problem. Therefore, the present study aimed to develop a material that can maintain compressive strength above 30 MPa while increasing the porosity to 30%, solving the curing problem, and extending the setting time. This study proposes a sustainable material design based on the concept of limestone calcined clay cement (LC3) and a fly ash–based foamed geopolymer. The results show that the proposed material can generate porosity of more than 30% and maintain a compressive strength above 30 MPa while the rapid setting and curing limitation problems are solved. Moreover, the developed cementitious composite was proven to reduce CO2 emissions by 31.91% compared to conventional construction materials, which highlights that the newly developed material can be classified as a low carbon construction material. |
| first_indexed | 2024-03-12T15:19:48Z |
| format | Article |
| id | doaj.art-545c7a9f279b45638f329d45770d03e6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:19:48Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-545c7a9f279b45638f329d45770d03e62023-08-11T05:34:18ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012554945505Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPaSiyu Wu0Kebede Alemayehu Moges1Prabhat Vashistha2Sukhoon Pyo3Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaDepartment of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaDepartment of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaCorresponding author.; Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaMany researchers have tried to increase the porosity of cement-based materials for different applications, but a limitation of the existing technology is that it is difficult to achieve more than 30 MPa compressive strength for materials that have a porosity of more than 30%. To overcome the decrease in compressive strength, some studies have developed fly ash-based foam geopolymers with silica fume as the foaming agent. However, this material requires heat curing and has a rapid setting problem. Therefore, the present study aimed to develop a material that can maintain compressive strength above 30 MPa while increasing the porosity to 30%, solving the curing problem, and extending the setting time. This study proposes a sustainable material design based on the concept of limestone calcined clay cement (LC3) and a fly ash–based foamed geopolymer. The results show that the proposed material can generate porosity of more than 30% and maintain a compressive strength above 30 MPa while the rapid setting and curing limitation problems are solved. Moreover, the developed cementitious composite was proven to reduce CO2 emissions by 31.91% compared to conventional construction materials, which highlights that the newly developed material can be classified as a low carbon construction material.http://www.sciencedirect.com/science/article/pii/S223878542301565XHigh-strength foamed geopolymerLime mudFly ashPorosityCO2 emissions |
| spellingShingle | Siyu Wu Kebede Alemayehu Moges Prabhat Vashistha Sukhoon Pyo Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa Journal of Materials Research and Technology High-strength foamed geopolymer Lime mud Fly ash Porosity CO2 emissions |
| title | Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa |
| title_full | Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa |
| title_fullStr | Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa |
| title_full_unstemmed | Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa |
| title_short | Sustainable cementitious composites with 30% porosity and a compressive strength of 30 MPa |
| title_sort | sustainable cementitious composites with 30 porosity and a compressive strength of 30 mpa |
| topic | High-strength foamed geopolymer Lime mud Fly ash Porosity CO2 emissions |
| url | http://www.sciencedirect.com/science/article/pii/S223878542301565X |
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