Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment
The long-term durability of basalt fiber-reinforced geopolymer concrete (BFRGC) in marine environments is importance for the development of sustainable construction practices. This study examines the long-term durability of basalt fiber-reinforced geopolymer concrete exposed to dry-wet cycles and im...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179661 |
| _version_ | 1826179037067739136 |
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| author | Zhang, Y. H. Zhong, W. L. Fan, L. F. |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhang, Y. H. Zhong, W. L. Fan, L. F. |
| author_sort | Zhang, Y. H. |
| collection | NTU |
| description | The long-term durability of basalt fiber-reinforced geopolymer concrete (BFRGC) in marine environments is importance for the development of sustainable construction practices. This study examines the long-term durability of basalt fiber-reinforced geopolymer concrete exposed to dry-wet cycles and immersion treatment in marine conditions. A geopolymer concrete with 1% fiber content was prepared and subjected to dry-wet cycles and immersion treatments in a 5% sulfate solution (Tehmina et al., 2014; Nasir et al., 2016; John et al., 2016) [1-3]. Density measurements, ultrasonic pulse velocity tests, and uniaxial compression tests were conducted on the BFRGC after various treatment durations. The mechanical properties of BFRGC were compared with geopolymer concrete without fibers in marine environments. Additionally, the changes in compressive strength of geopolymer concrete with and without fibers in different immersion environments were further discussed. Using low-field nuclear magnetic resonance (LF-NMR) technology, the variations in pore structure were also analyzed. The results show that the mechanical property loss from dry-wet cycles was greater than from immersion treatment. In BFRGC, strength decreased by 10.1% after 192 days of dry-wet cycles, compared to a smaller decrease of 5.6% in immersion environments. The inclusion of basalt fibers effectively enhances stability. When in dry-wet cycle tests, BFRGC strength decreased from 49.6 MPa to 44.6 MPa, a reduction of 10.1%. Conversely, geopolymer concrete without fibers dropped from 49.7 MPa to 42.1 MPa, a reduction of 15.5%. LF-NMR test results show that the porosity of geopolymer concrete without fibers increased by 21.6% and 17.5% in dry-wet cycles and immersion environments, respectively. In contrast, the porosity of BFRGC increased by 16.1% and 12.7%. |
| first_indexed | 2024-10-01T04:31:31Z |
| format | Journal Article |
| id | ntu-10356/179661 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:31:31Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1796612024-08-16T15:34:51Z Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment Zhang, Y. H. Zhong, W. L. Fan, L. F. School of Civil and Environmental Engineering Engineering Geopolymer concrete Basalt fiber The long-term durability of basalt fiber-reinforced geopolymer concrete (BFRGC) in marine environments is importance for the development of sustainable construction practices. This study examines the long-term durability of basalt fiber-reinforced geopolymer concrete exposed to dry-wet cycles and immersion treatment in marine conditions. A geopolymer concrete with 1% fiber content was prepared and subjected to dry-wet cycles and immersion treatments in a 5% sulfate solution (Tehmina et al., 2014; Nasir et al., 2016; John et al., 2016) [1-3]. Density measurements, ultrasonic pulse velocity tests, and uniaxial compression tests were conducted on the BFRGC after various treatment durations. The mechanical properties of BFRGC were compared with geopolymer concrete without fibers in marine environments. Additionally, the changes in compressive strength of geopolymer concrete with and without fibers in different immersion environments were further discussed. Using low-field nuclear magnetic resonance (LF-NMR) technology, the variations in pore structure were also analyzed. The results show that the mechanical property loss from dry-wet cycles was greater than from immersion treatment. In BFRGC, strength decreased by 10.1% after 192 days of dry-wet cycles, compared to a smaller decrease of 5.6% in immersion environments. The inclusion of basalt fibers effectively enhances stability. When in dry-wet cycle tests, BFRGC strength decreased from 49.6 MPa to 44.6 MPa, a reduction of 10.1%. Conversely, geopolymer concrete without fibers dropped from 49.7 MPa to 42.1 MPa, a reduction of 15.5%. LF-NMR test results show that the porosity of geopolymer concrete without fibers increased by 21.6% and 17.5% in dry-wet cycles and immersion environments, respectively. In contrast, the porosity of BFRGC increased by 16.1% and 12.7%. Published version This work is supported by the project (23073005). 2024-08-14T06:58:36Z 2024-08-14T06:58:36Z 2024 Journal Article Zhang, Y. H., Zhong, W. L. & Fan, L. F. (2024). Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment. Journal of Materials Research and Technology, 31, 593-605. https://dx.doi.org/10.1016/j.jmrt.2024.06.078 2238-7854 https://hdl.handle.net/10356/179661 10.1016/j.jmrt.2024.06.078 2-s2.0-85196165970 31 593 605 en Journal of Materials Research and Technology © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/bync/4.0/). application/pdf |
| spellingShingle | Engineering Geopolymer concrete Basalt fiber Zhang, Y. H. Zhong, W. L. Fan, L. F. Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title | Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title_full | Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title_fullStr | Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title_full_unstemmed | Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title_short | Long-term durability investigation of basalt fiber-reinforced geopolymer concrete in marine environment |
| title_sort | long term durability investigation of basalt fiber reinforced geopolymer concrete in marine environment |
| topic | Engineering Geopolymer concrete Basalt fiber |
| url | https://hdl.handle.net/10356/179661 |
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