Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system
Evaluating the trigger mechanism of microcapsules is always an issue for self-healing cementitious materials, which could be potentially tackled by the application of Raman spectroscopy. In this paper, Raman spectroscopy was applied to tracing the repairing process in cementitious paste. Based upon...
| Main Authors: | , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/172956 |
| _version_ | 1811689909326446592 |
|---|---|
| author | Mi, Tangwei Mao, Jianghong Cai, Yunhong Luo, Shuqiong Wang, Xianfeng Xiao, Meilin Zhu, Haiyan Yang, Kai Ren, Jun |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Mi, Tangwei Mao, Jianghong Cai, Yunhong Luo, Shuqiong Wang, Xianfeng Xiao, Meilin Zhu, Haiyan Yang, Kai Ren, Jun |
| author_sort | Mi, Tangwei |
| collection | NTU |
| description | Evaluating the trigger mechanism of microcapsules is always an issue for self-healing cementitious materials, which could be potentially tackled by the application of Raman spectroscopy. In this paper, Raman spectroscopy was applied to tracing the repairing process in cementitious paste. Based upon the characterisation of the traditional UF/Epoxy microcapsule by Raman spectroscopy, the spectra of the microcapsule shell and core in cementitious matrix were identified and established. Furthermore, to improve the detection precision and efficiency, a newly designed microcapsule was developed in which the anatase was introduced in the microcapsule core to amplify the signal by around 90 times. Finally, the healing behaviour of the newly designed microcapsule was investigated by Raman mapping. The results clearly showed that Raman spectroscopy successfully detected the breakage of microcapsule due to the occurrence of cracking, which provides a promising approach to detecting the repairing behaviour of self-healing microcapsules in cementitious materials. |
| first_indexed | 2024-10-01T05:55:35Z |
| format | Journal Article |
| id | ntu-10356/172956 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:55:35Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1729562024-01-03T08:08:45Z Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system Mi, Tangwei Mao, Jianghong Cai, Yunhong Luo, Shuqiong Wang, Xianfeng Xiao, Meilin Zhu, Haiyan Yang, Kai Ren, Jun School of Civil and Environmental Engineering Engineering::Civil engineering Microcapsule Raman Spectroscopy Evaluating the trigger mechanism of microcapsules is always an issue for self-healing cementitious materials, which could be potentially tackled by the application of Raman spectroscopy. In this paper, Raman spectroscopy was applied to tracing the repairing process in cementitious paste. Based upon the characterisation of the traditional UF/Epoxy microcapsule by Raman spectroscopy, the spectra of the microcapsule shell and core in cementitious matrix were identified and established. Furthermore, to improve the detection precision and efficiency, a newly designed microcapsule was developed in which the anatase was introduced in the microcapsule core to amplify the signal by around 90 times. Finally, the healing behaviour of the newly designed microcapsule was investigated by Raman mapping. The results clearly showed that Raman spectroscopy successfully detected the breakage of microcapsule due to the occurrence of cracking, which provides a promising approach to detecting the repairing behaviour of self-healing microcapsules in cementitious materials. This project is funded by the National Key Research and Development Program of China (2022YFE0109300), National Natural Science Foundation of China (52168038, 51908526, 51978409), the College Student Innovation and Entrepreneurship Training Project (No. 202210673087, 202210673019, S202210673064). 2024-01-03T08:08:45Z 2024-01-03T08:08:45Z 2023 Journal Article Mi, T., Mao, J., Cai, Y., Luo, S., Wang, X., Xiao, M., Zhu, H., Yang, K. & Ren, J. (2023). Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system. Construction and Building Materials, 387, 131637-. https://dx.doi.org/10.1016/j.conbuildmat.2023.131637 0950-0618 https://hdl.handle.net/10356/172956 10.1016/j.conbuildmat.2023.131637 2-s2.0-85158881079 387 131637 en Construction and Building Materials © 2023 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Microcapsule Raman Spectroscopy Mi, Tangwei Mao, Jianghong Cai, Yunhong Luo, Shuqiong Wang, Xianfeng Xiao, Meilin Zhu, Haiyan Yang, Kai Ren, Jun Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title | Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title_full | Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title_fullStr | Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title_full_unstemmed | Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title_short | Application of Raman spectroscopy for detecting the repairing behaviour of microcapsules in self-healing cementitious system |
| title_sort | application of raman spectroscopy for detecting the repairing behaviour of microcapsules in self healing cementitious system |
| topic | Engineering::Civil engineering Microcapsule Raman Spectroscopy |
| url | https://hdl.handle.net/10356/172956 |
| work_keys_str_mv | AT mitangwei applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT maojianghong applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT caiyunhong applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT luoshuqiong applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT wangxianfeng applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT xiaomeilin applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT zhuhaiyan applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT yangkai applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem AT renjun applicationoframanspectroscopyfordetectingtherepairingbehaviourofmicrocapsulesinselfhealingcementitioussystem |