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https://hdl.handle.net/123456789/1502| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | Experimental investigation of the TRM-to-masonry bond after exposure to elevated temperatures: cementitious and alkali-activated matrices of various densities |
| Συγγραφέας: | [EL] Ασκούνη, Παρασκευή[EN] Askouni, Paraskevi [EL] Παπανικολάου, Αικατερίνη[EN] Papanicolaou Catherine [FR] Azdejković, Lazar |
| Ημερομηνία: | 25/12/2021 |
| Περίληψη: | Limited research has focused on the effect of high temperatures on the textile-reinforced mortar (TRM)-to-masonry bond. In this study, masonry prisms that were furnished with double-layered TRM strips were tested under shear bond conditions after their exposure to 200 °C and 400 °C for 1 h using the single-lap/single-prism setup. A total of four TRM systems were applied sharing the same type of textile –a dry AR glass fiber one– and different matrices: two cementitious matrices, namely a normal-weight (TRCNM) and a lightweight (TRCLM) one, and two counterpart alkali-activated matrices (TRAANM and TRAALM) based on metakaolin and fly ash. Specimens’ exposure to elevated temperatures did not alter their failure mode which was due to the sleeve fibers’ rupture along with core fibers’ slippage from the mortar. The residual bond capacity of the TRM systems decreases almost linearly with increasing exposure temperature. The alkali-activated textile reinforced mortars outperformed their cement-based counterparts in terms of bond strength at every temperature. All systems retained close to 50% of their original shear bond strength after heating at 400 °C. Per the type of binder, lightweight matrices resulted in either comparable (cement-based systems) or better (alkali-activated systems) heat protection at the TRM/masonry interface. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 19 |
| DOI: | 10.3390/ma15010140 |
| EISSN: | 1996-1944 |
| Θεματική κατηγορία: | [EL] Επιστήμη υλικών, χαρακτηρισμός και δοκιμές[EN] Materials Science, Characterization and testing |
| Λέξεις-κλειδιά: | textile reinforced mortar (TRM); masonry; temperature; cementitious/alkali-activated matrix; normal-weigh/lightweight aggregates |
| Κάτοχος πνευματικών δικαιωμάτων: | © 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
| Όροι και προϋποθέσεις δικαιωμάτων: | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.mdpi.com/1996-1944/15/1/140 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://www.mdpi.com/journal/materials |
| Τίτλος πηγής δημοσίευσης: | Materials |
| Τεύχος: | 1 |
| Τόμος: | 15 |
| Σελίδες τεκμηρίου (στην πηγή): | Article no 140 |
| Σημειώσεις: | This research: (i) was co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme “Human Resources Development, Education and Lifelong Learning 2014–2020”, in the framework of the Act “SUPPORT OF POSTDOCTORAL RESEARCHERS-B cycle” (MIS 5033021) implemented by the State Scholarships Foundation, (ii) has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 813596 DuRSAAM. |
| Εμφανίζεται στις συλλογές: | Μεταδιδακτορικοί ερευνητές |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
|---|---|---|---|---|---|---|---|
| materials-15-00140.pdf | Άρθρο σε επιστημονικό περιοδικό | 4.58 MB | Adobe PDF | Δημοσιευμένη/του Εκδότη |  | Δείτε/ανοίξτε |