Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring
In the field of structural health monitoring, self-sensing cementitious binders have gained great attention over the past decades due to their high sensing performance and durability. In particular, self-sensing cementitious coatings have seen increased interest due to their high compatibility with...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_05006.pdf |
| _version_ | 1797835265873543168 |
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| author | Vlachakis Christos Su Yen-Fang Al-Tabbaa Abir |
| author_facet | Vlachakis Christos Su Yen-Fang Al-Tabbaa Abir |
| author_sort | Vlachakis Christos |
| collection | DOAJ |
| description | In the field of structural health monitoring, self-sensing cementitious binders have gained great attention over the past decades due to their high sensing performance and durability. In particular, self-sensing cementitious coatings have seen increased interest due to their high compatibility with concrete structures and their ability to monitor existing infrastructure while using low amounts of material and at lower costs. Geopolymer coatings display favorable characteristics for this application due to their innate electrical properties and high bond strength with concrete structures. Despite the research that has been carried out on self-sensing coatings, the effect of the interfacial bond between the coating and substrate on the coating’s sensing performance has not been investigated. Poor bonding between the two materials can lead to low-quality sensing measurements and data misinterpretation. In this paper, we aim to investigate the bonding effect on the sensing performance of self-sensing geopolymer coatings. For this study fly ash-metakaolin geopolymer coatings were applied onto concrete substrates; the concrete surfaces were treated by employing three different surface preparation methods: mechanical brooming, chemical treatment and the untreated cast surface. The bond strength for each preparation technique was measured with the splitting tensile bond test and the sensing response for the geopolymer coatings under repeated loading was also characterized. Through proper understanding of the interface between cementitious materials, sensing coatings can be tailored accordingly to achieve high sensing performance and thus allowing high-quality monitoring and proactive maintenance in civil infrastructure. |
| first_indexed | 2024-04-09T14:51:24Z |
| format | Article |
| id | doaj.art-d8e88fc66eff471fab76e4e84917496a |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-04-09T14:51:24Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-d8e88fc66eff471fab76e4e84917496a2023-05-02T09:34:12ZengEDP SciencesMATEC Web of Conferences2261-236X2023-01-013780500610.1051/matecconf/202337805006matecconf_smartincs2023_05006Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoringVlachakis Christos0Su Yen-Fang1Al-Tabbaa Abir2Department of Engineering, University of CambridgeDepartment of Civil and Environmental Engineering, Louisiana State University, Patrick F. Taylor HallDepartment of Engineering, University of CambridgeIn the field of structural health monitoring, self-sensing cementitious binders have gained great attention over the past decades due to their high sensing performance and durability. In particular, self-sensing cementitious coatings have seen increased interest due to their high compatibility with concrete structures and their ability to monitor existing infrastructure while using low amounts of material and at lower costs. Geopolymer coatings display favorable characteristics for this application due to their innate electrical properties and high bond strength with concrete structures. Despite the research that has been carried out on self-sensing coatings, the effect of the interfacial bond between the coating and substrate on the coating’s sensing performance has not been investigated. Poor bonding between the two materials can lead to low-quality sensing measurements and data misinterpretation. In this paper, we aim to investigate the bonding effect on the sensing performance of self-sensing geopolymer coatings. For this study fly ash-metakaolin geopolymer coatings were applied onto concrete substrates; the concrete surfaces were treated by employing three different surface preparation methods: mechanical brooming, chemical treatment and the untreated cast surface. The bond strength for each preparation technique was measured with the splitting tensile bond test and the sensing response for the geopolymer coatings under repeated loading was also characterized. Through proper understanding of the interface between cementitious materials, sensing coatings can be tailored accordingly to achieve high sensing performance and thus allowing high-quality monitoring and proactive maintenance in civil infrastructure.https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_05006.pdf |
| spellingShingle | Vlachakis Christos Su Yen-Fang Al-Tabbaa Abir Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring MATEC Web of Conferences |
| title | Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring |
| title_full | Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring |
| title_fullStr | Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring |
| title_full_unstemmed | Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring |
| title_short | Investigation of the interfacial bonding effect on self-sensing cementitious coatings for infrastructure monitoring |
| title_sort | investigation of the interfacial bonding effect on self sensing cementitious coatings for infrastructure monitoring |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2023/05/matecconf_smartincs2023_05006.pdf |
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