Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved]
The need for repair and maintenance has become dominant in the European construction sector. This, combined with the urge to decrease CO2 emissions, has resulted in the development of lower carbon footprint repair solutions such as textile reinforced mortars (TRM) based on alkali-activated materials...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
F1000 Research Ltd
2022-06-01
|
| Series: | Open Research Europe |
| Subjects: | |
| Online Access: | https://open-research-europe.ec.europa.eu/articles/2-79/v1 |
| _version_ | 1797950789763727360 |
|---|---|
| author | Lazar Azdejkovic Andres Arce Catherine G. Papanicolaou Luiz Miranda de Lima Thanasis C. Triantafillou |
| author_facet | Lazar Azdejkovic Andres Arce Catherine G. Papanicolaou Luiz Miranda de Lima Thanasis C. Triantafillou |
| author_sort | Lazar Azdejkovic |
| collection | DOAJ |
| description | The need for repair and maintenance has become dominant in the European construction sector. This, combined with the urge to decrease CO2 emissions, has resulted in the development of lower carbon footprint repair solutions such as textile reinforced mortars (TRM) based on alkali-activated materials (AAM). Life cycle studies indicate that AAM CO2 savings, when compared to Portland cement, range from 80% to 30%. Furthermore, in this study, recycled aggregates were considered with the aim to promote a circular economy mindset. AAM mortars formulation based on fly ash, ladle furnace slag and metakaolin were tested for compressive and flexural strength. Three out of all formulations were chosen for an analysis on the potential of these mortars to be used for TRM applications. Tensile and shear bond tests, combined with a concrete substrate, were executed as indicators of the TRM effectiveness. Scanning electron microscopy and chemical analysis based on energy dispersive X-ray spectroscopy were used to interpret the results and reveal the reasons behind the different level of performance of these composites. Results indicated that TRM based on high calcium fly ash are unsuitable for structural strengthening applications due to low bond between matrix and/or substrate and fibers. Metakaolin-based TRM showed good performance both in terms of tensile strength and bond capacity, which suggests potential as a repair mortar. |
| first_indexed | 2024-04-10T22:20:44Z |
| format | Article |
| id | doaj.art-4404793bc5194a89876681130ad80a2d |
| institution | Directory Open Access Journal |
| issn | 2732-5121 |
| language | English |
| last_indexed | 2024-04-10T22:20:44Z |
| publishDate | 2022-06-01 |
| publisher | F1000 Research Ltd |
| record_format | Article |
| series | Open Research Europe |
| spelling | doaj.art-4404793bc5194a89876681130ad80a2d2023-01-18T01:00:00ZengF1000 Research LtdOpen Research Europe2732-51212022-06-01215851Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved]Lazar Azdejkovic0Andres Arce1Catherine G. Papanicolaou2https://orcid.org/0000-0002-5951-9507Luiz Miranda de Lima3Thanasis C. Triantafillou4https://orcid.org/0000-0003-0263-3955Department of Civil Enginnering, University of Patras, Patras, West Greece, 26222, GreeceDepartment of Civil Enginnering, University of Patras, Patras, West Greece, 26222, GreeceDepartment of Civil Enginnering, University of Patras, Patras, West Greece, 26222, GreeceDepartment of Materials and Environment, Delft University of Technology, Delft, 2628, The NetherlandsDepartment of Civil Enginnering, University of Patras, Patras, West Greece, 26222, GreeceThe need for repair and maintenance has become dominant in the European construction sector. This, combined with the urge to decrease CO2 emissions, has resulted in the development of lower carbon footprint repair solutions such as textile reinforced mortars (TRM) based on alkali-activated materials (AAM). Life cycle studies indicate that AAM CO2 savings, when compared to Portland cement, range from 80% to 30%. Furthermore, in this study, recycled aggregates were considered with the aim to promote a circular economy mindset. AAM mortars formulation based on fly ash, ladle furnace slag and metakaolin were tested for compressive and flexural strength. Three out of all formulations were chosen for an analysis on the potential of these mortars to be used for TRM applications. Tensile and shear bond tests, combined with a concrete substrate, were executed as indicators of the TRM effectiveness. Scanning electron microscopy and chemical analysis based on energy dispersive X-ray spectroscopy were used to interpret the results and reveal the reasons behind the different level of performance of these composites. Results indicated that TRM based on high calcium fly ash are unsuitable for structural strengthening applications due to low bond between matrix and/or substrate and fibers. Metakaolin-based TRM showed good performance both in terms of tensile strength and bond capacity, which suggests potential as a repair mortar.https://open-research-europe.ec.europa.eu/articles/2-79/v1Alkali-activated materials Bond Geopolymer Tensile strength Textile reinforced mortar SEMeng |
| spellingShingle | Lazar Azdejkovic Andres Arce Catherine G. Papanicolaou Luiz Miranda de Lima Thanasis C. Triantafillou Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] Open Research Europe Alkali-activated materials Bond Geopolymer Tensile strength Textile reinforced mortar SEM eng |
| title | Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] |
| title_full | Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] |
| title_fullStr | Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] |
| title_full_unstemmed | Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] |
| title_short | Mechanical behavior of textile reinforced alkali-activated mortar based on fly ash, metakaolin and ladle furnace slag [version 1; peer review: 2 approved] |
| title_sort | mechanical behavior of textile reinforced alkali activated mortar based on fly ash metakaolin and ladle furnace slag version 1 peer review 2 approved |
| topic | Alkali-activated materials Bond Geopolymer Tensile strength Textile reinforced mortar SEM eng |
| url | https://open-research-europe.ec.europa.eu/articles/2-79/v1 |
| work_keys_str_mv | AT lazarazdejkovic mechanicalbehavioroftextilereinforcedalkaliactivatedmortarbasedonflyashmetakaolinandladlefurnaceslagversion1peerreview2approved AT andresarce mechanicalbehavioroftextilereinforcedalkaliactivatedmortarbasedonflyashmetakaolinandladlefurnaceslagversion1peerreview2approved AT catherinegpapanicolaou mechanicalbehavioroftextilereinforcedalkaliactivatedmortarbasedonflyashmetakaolinandladlefurnaceslagversion1peerreview2approved AT luizmirandadelima mechanicalbehavioroftextilereinforcedalkaliactivatedmortarbasedonflyashmetakaolinandladlefurnaceslagversion1peerreview2approved AT thanasisctriantafillou mechanicalbehavioroftextilereinforcedalkaliactivatedmortarbasedonflyashmetakaolinandladlefurnaceslagversion1peerreview2approved |