Deterioration in the microstructure of metakaolin-based geopolymers in marine environment
In this research, metakaolin-based geopolymers were synthesized to study their deterioration in marine environment. The geopolymers were exposed in air, seawater, dry-wet and heat-cool cycles of seawater for 30, 60 and 90 days. The mechanical property of the geopolymers was characterized through com...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-05-01
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| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419300882 |
| _version_ | 1818986996229472256 |
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| author | Xing Li Feng Rao Shaoxian Song Qinyong Ma |
| author_facet | Xing Li Feng Rao Shaoxian Song Qinyong Ma |
| author_sort | Xing Li |
| collection | DOAJ |
| description | In this research, metakaolin-based geopolymers were synthesized to study their deterioration in marine environment. The geopolymers were exposed in air, seawater, dry-wet and heat-cool cycles of seawater for 30, 60 and 90 days. The mechanical property of the geopolymers was characterized through compressive strength measurements, and their microstructures were measured by X-ray diffraction (XRD), scanning electron microscope (SEM) and nuclear magnetic resonance (NMR) apparatus. It was found that seawater environment inhibited the geopolymerization reactions, so that a low amount of tetrahedral silicon of Q4(4Al), Q4(3Al) and Q4(2Al) were formed. Keywords: Metakaolin geopolymer, Microstructure, Marine environment, NMR spectra |
| first_indexed | 2024-12-20T18:59:40Z |
| format | Article |
| id | doaj.art-fc75b296b987483da39e2e1aea4ab41f |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-20T18:59:40Z |
| publishDate | 2019-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fc75b296b987483da39e2e1aea4ab41f2022-12-21T19:29:26ZengElsevierJournal of Materials Research and Technology2238-78542019-05-018327472752Deterioration in the microstructure of metakaolin-based geopolymers in marine environmentXing Li0Feng Rao1Shaoxian Song2Qinyong Ma3School of Zijin Mining, Fuzhou University, Fuzhou, Fujian 350108, China; CONACYT Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán 58030, MexicoSchool of Zijin Mining, Fuzhou University, Fuzhou, Fujian 350108, China; CONACYT Instituto de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán 58030, Mexico; Corresponding author.School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, Anhui 232001, ChinaIn this research, metakaolin-based geopolymers were synthesized to study their deterioration in marine environment. The geopolymers were exposed in air, seawater, dry-wet and heat-cool cycles of seawater for 30, 60 and 90 days. The mechanical property of the geopolymers was characterized through compressive strength measurements, and their microstructures were measured by X-ray diffraction (XRD), scanning electron microscope (SEM) and nuclear magnetic resonance (NMR) apparatus. It was found that seawater environment inhibited the geopolymerization reactions, so that a low amount of tetrahedral silicon of Q4(4Al), Q4(3Al) and Q4(2Al) were formed. Keywords: Metakaolin geopolymer, Microstructure, Marine environment, NMR spectrahttp://www.sciencedirect.com/science/article/pii/S2238785419300882 |
| spellingShingle | Xing Li Feng Rao Shaoxian Song Qinyong Ma Deterioration in the microstructure of metakaolin-based geopolymers in marine environment Journal of Materials Research and Technology |
| title | Deterioration in the microstructure of metakaolin-based geopolymers in marine environment |
| title_full | Deterioration in the microstructure of metakaolin-based geopolymers in marine environment |
| title_fullStr | Deterioration in the microstructure of metakaolin-based geopolymers in marine environment |
| title_full_unstemmed | Deterioration in the microstructure of metakaolin-based geopolymers in marine environment |
| title_short | Deterioration in the microstructure of metakaolin-based geopolymers in marine environment |
| title_sort | deterioration in the microstructure of metakaolin based geopolymers in marine environment |
| url | http://www.sciencedirect.com/science/article/pii/S2238785419300882 |
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