Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3)
Limestone calcined clay cement (LC3) has emerged as a promising alternative to traditional Portland cement (PC), offering reduced carbon dioxide emissions and improved mechanical and durability-related properties. However, concerns persist regarding the durability of reinforced LC3 concrete, particu...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180318 |
| _version_ | 1826115006442242048 |
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| author | Mi, Tangwei Wang, Danqian Li, Yongqiang Wang, Yaocheng |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Mi, Tangwei Wang, Danqian Li, Yongqiang Wang, Yaocheng |
| author_sort | Mi, Tangwei |
| collection | NTU |
| description | Limestone calcined clay cement (LC3) has emerged as a promising alternative to traditional Portland cement (PC), offering reduced carbon dioxide emissions and improved mechanical and durability-related properties. However, concerns persist regarding the durability of reinforced LC3 concrete, particularly its lower critical chloride threshold and carbonation resistance. To address this issue, aluminium alloys were suggested to be used as an alternative reinforcement. This study investigates the passivation behaviour of aluminium alloys in LC3 and compares it with that in PC. Electrochemical measurements indicate that LC3 paste exhibits higher resistance and forms a more compact film compared to PC paste, suggesting its more protective property. XRD, Raman spectroscopy, and SEM analysis provide insights into the chemical composition and thickness of the films formed on the surfaces of aluminium alloys. This study enhances our understanding of the passivation mechanisms of aluminium alloys in LC3, facilitating their potential application in LC3-based structures. |
| first_indexed | 2025-03-09T11:16:20Z |
| format | Journal Article |
| id | ntu-10356/180318 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T11:16:20Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1803182024-10-01T05:59:09Z Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) Mi, Tangwei Wang, Danqian Li, Yongqiang Wang, Yaocheng School of Civil and Environmental Engineering Engineering Limestone calcined clay cement Aluminium alloys Limestone calcined clay cement (LC3) has emerged as a promising alternative to traditional Portland cement (PC), offering reduced carbon dioxide emissions and improved mechanical and durability-related properties. However, concerns persist regarding the durability of reinforced LC3 concrete, particularly its lower critical chloride threshold and carbonation resistance. To address this issue, aluminium alloys were suggested to be used as an alternative reinforcement. This study investigates the passivation behaviour of aluminium alloys in LC3 and compares it with that in PC. Electrochemical measurements indicate that LC3 paste exhibits higher resistance and forms a more compact film compared to PC paste, suggesting its more protective property. XRD, Raman spectroscopy, and SEM analysis provide insights into the chemical composition and thickness of the films formed on the surfaces of aluminium alloys. This study enhances our understanding of the passivation mechanisms of aluminium alloys in LC3, facilitating their potential application in LC3-based structures. The authors all thank the financial supports from the National Natural Science Foundation of China (52078301) and Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering (SZU) No. 2020B1212060074. 2024-10-01T05:59:09Z 2024-10-01T05:59:09Z 2024 Journal Article Mi, T., Wang, D., Li, Y. & Wang, Y. (2024). Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3). Construction and Building Materials, 421, 135633-. https://dx.doi.org/10.1016/j.conbuildmat.2024.135633 0950-0618 https://hdl.handle.net/10356/180318 10.1016/j.conbuildmat.2024.135633 2-s2.0-85187103553 421 135633 en Construction and Building Materials © 2024 Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Limestone calcined clay cement Aluminium alloys Mi, Tangwei Wang, Danqian Li, Yongqiang Wang, Yaocheng Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title | Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title_full | Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title_fullStr | Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title_full_unstemmed | Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title_short | Passivation behaviour of aluminium alloys in limestone calcined clay cement (LC3) |
| title_sort | passivation behaviour of aluminium alloys in limestone calcined clay cement lc3 |
| topic | Engineering Limestone calcined clay cement Aluminium alloys |
| url | https://hdl.handle.net/10356/180318 |
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