Investigate the effects of molarity on the strength of geopolymers
Compressive strength results of class-f fly ash geopolymer (no aggregates or admixtures) cured in water are reported. Na2SiO3 was mixed with NaOH at mass ratio of 2.5: 1, while the mass ratio of fly-ash to alkaline activator is kept at 3:1 for the geopolymer mix design. The effects of varying differ...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/153666 |
| _version_ | 1811679866274185216 |
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| author | Toh, Wen Chang |
| author2 | Ting Seng Kiong |
| author_facet | Ting Seng Kiong Toh, Wen Chang |
| author_sort | Toh, Wen Chang |
| collection | NTU |
| description | Compressive strength results of class-f fly ash geopolymer (no aggregates or admixtures) cured in water are reported. Na2SiO3 was mixed with NaOH at mass ratio of 2.5: 1, while the mass ratio of fly-ash to alkaline activator is kept at 3:1 for the geopolymer mix design. The effects of varying different molarity of NaOH and mixing time on fly ash geopolymer’s compressive strength was examined. Compressive strength of water-cured geopolymer samples was found to increase with molarity of NaOH and increased mixing time did not significantly impact the overall strength of geopolymer. Water curing has also been attested as the more inefficient curing method for geopolymers when compared to ambient curing in terms of 28th-day compressive strength. Peak compressive strength of approximately 50MPa was obtained for water-cured geopolymer at high NaOH molarity (15M, 18M). |
| first_indexed | 2024-10-01T03:15:57Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/153666 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:15:57Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1536662021-12-09T01:06:02Z Investigate the effects of molarity on the strength of geopolymers Toh, Wen Chang Ting Seng Kiong School of Civil and Environmental Engineering tsk@ntu.edu.sg Engineering::Civil engineering::Construction technology Compressive strength results of class-f fly ash geopolymer (no aggregates or admixtures) cured in water are reported. Na2SiO3 was mixed with NaOH at mass ratio of 2.5: 1, while the mass ratio of fly-ash to alkaline activator is kept at 3:1 for the geopolymer mix design. The effects of varying different molarity of NaOH and mixing time on fly ash geopolymer’s compressive strength was examined. Compressive strength of water-cured geopolymer samples was found to increase with molarity of NaOH and increased mixing time did not significantly impact the overall strength of geopolymer. Water curing has also been attested as the more inefficient curing method for geopolymers when compared to ambient curing in terms of 28th-day compressive strength. Peak compressive strength of approximately 50MPa was obtained for water-cured geopolymer at high NaOH molarity (15M, 18M). Bachelor of Engineering (Civil) 2021-12-09T01:06:02Z 2021-12-09T01:06:02Z 2021 Final Year Project (FYP) Toh, W. C. (2021). Investigate the effects of molarity on the strength of geopolymers. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/153666 https://hdl.handle.net/10356/153666 en CT-08 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Civil engineering::Construction technology Toh, Wen Chang Investigate the effects of molarity on the strength of geopolymers |
| title | Investigate the effects of molarity on the strength of geopolymers |
| title_full | Investigate the effects of molarity on the strength of geopolymers |
| title_fullStr | Investigate the effects of molarity on the strength of geopolymers |
| title_full_unstemmed | Investigate the effects of molarity on the strength of geopolymers |
| title_short | Investigate the effects of molarity on the strength of geopolymers |
| title_sort | investigate the effects of molarity on the strength of geopolymers |
| topic | Engineering::Civil engineering::Construction technology |
| url | https://hdl.handle.net/10356/153666 |
| work_keys_str_mv | AT tohwenchang investigatetheeffectsofmolarityonthestrengthofgeopolymers |