Structural characterization and fire performance of geopolymer-glass fiber composite panels
With a specific emphasis on understanding the thermal and fire resistance, in this work, sodium- and potassium-type metakaolin geopolymers (with Si:Al > 2) reinforced with glass fiber (GF) fabrics were manufactured. X-ray diffraction and solid-state nuclear magnetic resonance spectroscopy were us...
| Main Authors: | , , |
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| 其他作者: | |
| 格式: | Journal Article |
| 语言: | English |
| 出版: |
2023
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| 主题: | |
| 在线阅读: | https://hdl.handle.net/10356/171309 |
| _version_ | 1826116798094770176 |
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| author | Ye, Kai Dasari, Aravind Hooper, Thomas J. N. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Ye, Kai Dasari, Aravind Hooper, Thomas J. N. |
| author_sort | Ye, Kai |
| collection | NTU |
| description | With a specific emphasis on understanding the thermal and fire resistance, in this work, sodium- and potassium-type metakaolin geopolymers (with Si:Al > 2) reinforced with glass fiber (GF) fabrics were manufactured. X-ray diffraction and solid-state nuclear magnetic resonance spectroscopy were used to understand the changes in structure and evolution of phases with temperature. The geopolymer matrices have shown stability up to 700 °C, above which a fiber–matrix interaction was detected before they crystallized into different phases at 1000 °C. The fire resistance times of these panels (12–17 mm thick) when a temperature profile similar to ISO 834 fire curve was imposed were 53.6–55.1 min for Na-GF and 53.2–68.7 min for K-GF composites. Further, one-dimensional thermal analysis using cone calorimeter has suggested the initiation of cracking through the matrix during dehydration because of stress relief. This had an influence on the fire resistance timing of the panels. Despite this, both composites still retained ∼25–30% of their initial flexural strength after the furnace test, which was understood as a compromise between the variations of formed phases and morphological features in the exposed and unexposed sides. |
| first_indexed | 2024-10-01T04:17:19Z |
| format | Journal Article |
| id | ntu-10356/171309 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:17:19Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1713092023-10-18T07:52:44Z Structural characterization and fire performance of geopolymer-glass fiber composite panels Ye, Kai Dasari, Aravind Hooper, Thomas J. N. School of Physical and Mathematical Sciences School of Materials Science and Engineering NTU Centre of High-Field NMR Spectroscopy and Imaging Engineering::Materials Geopolymer Glass Fiber Composites With a specific emphasis on understanding the thermal and fire resistance, in this work, sodium- and potassium-type metakaolin geopolymers (with Si:Al > 2) reinforced with glass fiber (GF) fabrics were manufactured. X-ray diffraction and solid-state nuclear magnetic resonance spectroscopy were used to understand the changes in structure and evolution of phases with temperature. The geopolymer matrices have shown stability up to 700 °C, above which a fiber–matrix interaction was detected before they crystallized into different phases at 1000 °C. The fire resistance times of these panels (12–17 mm thick) when a temperature profile similar to ISO 834 fire curve was imposed were 53.6–55.1 min for Na-GF and 53.2–68.7 min for K-GF composites. Further, one-dimensional thermal analysis using cone calorimeter has suggested the initiation of cracking through the matrix during dehydration because of stress relief. This had an influence on the fire resistance timing of the panels. Despite this, both composites still retained ∼25–30% of their initial flexural strength after the furnace test, which was understood as a compromise between the variations of formed phases and morphological features in the exposed and unexposed sides. Part of the work has been funded by JTC Corporation, Singapore through NTU-JTC I3C (RCA 17/365). The authors acknowledge the metakaolin provided by Imerys Asia Pacific Pte. Ltd. 2023-10-18T07:52:44Z 2023-10-18T07:52:44Z 2023 Journal Article Ye, K., Dasari, A. & Hooper, T. J. N. (2023). Structural characterization and fire performance of geopolymer-glass fiber composite panels. Construction and Building Materials, 400, 132633-. https://dx.doi.org/10.1016/j.conbuildmat.2023.132633 0950-0618 https://hdl.handle.net/10356/171309 10.1016/j.conbuildmat.2023.132633 2-s2.0-85166917146 400 132633 en RCA 17/365 Construction and Building Materials © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Materials Geopolymer Glass Fiber Composites Ye, Kai Dasari, Aravind Hooper, Thomas J. N. Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title | Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title_full | Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title_fullStr | Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title_full_unstemmed | Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title_short | Structural characterization and fire performance of geopolymer-glass fiber composite panels |
| title_sort | structural characterization and fire performance of geopolymer glass fiber composite panels |
| topic | Engineering::Materials Geopolymer Glass Fiber Composites |
| url | https://hdl.handle.net/10356/171309 |
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