Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/6263855E-DA1F-4618-BC38-64AB89E35D6D | - |
| Αναγνωριστικό | https://doi.org/10.3389/fmats.2020.00016 | - |
| Αναγνωριστικό | https://www.frontiersin.org/articles/10.3389/fmats.2020.00016/full | - |
| Γλώσσα | en | - |
| Μέγεθος | 13 pages | en |
| Μέγεθος | 2,1 megabytes | en |
| Τίτλος | TEOS modified with nano-calcium oxalate and PDMS to protect concrete based cultural heritage buildings | en |
| Δημιουργός | Kapetanaki Kali | en |
| Δημιουργός | Καπετανακη Καλη | el |
| Δημιουργός | Vazgiouraki Eleftheria | en |
| Δημιουργός | Βαζγιουρακη Ελευθερια | el |
| Δημιουργός | Stefanakis Dimitrios | en |
| Δημιουργός | Στεφανακης Δημητριος | el |
| Δημιουργός | Fotiou Afroditi | en |
| Δημιουργός | Φωτιου Αφροδιτη | el |
| Δημιουργός | Anyfantis George C. | en |
| Δημιουργός | García-Lodeiro Ines | en |
| Δημιουργός | Blanco Varela, María Teresa | en |
| Δημιουργός | Arabatzis Ioannis | en |
| Δημιουργός | Maravelaki Pagona | en |
| Δημιουργός | Μαραβελακη Παγωνα | el |
| Εκδότης | Frontiers Media | en |
| Περίληψη | Cultural Heritage constructions of twentieth century consist largely of mortar and concrete substrates. These concrete structures have suffered different types of decay processes. One of the most widely used consolidants is the Tetraethoxysilane (TEOS), which forms the basis of most existing commercial strengthening agents to protect porous building materials against deterioration. A novel, non-toxic strengthening and protective agent for mortar and concrete substrates was synthesized in a one-pot sol-gel procedure, incorporating in TEOS, Polydimethyl siloxane (PDMS), and nanoparticles of synthesized calcium oxalate (CaOx). PDMS provided hydrophobicity and reduced surface tension that causes cracks on the surface of produced xerogel. The synthesized nanocomposite both in sol and xerogel form was assessed with a variety of analytical techniques (FTIR, XRF, SEM, Optical Microscopy, Dynamic Light Scattering, Thermogravimetric analysis). The excellent physical properties of the produced colloidal solution of the nanocomposite, such as low viscosity and density, allow a penetration up to 2 cm from the surface in the treated cement mortars. This involved improvement of the mechanical and physical properties, such as the dynamic modulus of elasticity and increased water repellency. The treated cement mortars exhibited well-preserved aesthetic surface parameters and significant maintenance of the treatment. Furthermore, no harmful byproducts were identified indicating the nanocomposite compatibility to the siliceous and carbonate nature of the treated cement mortars. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2021-09-17 | - |
| Ημερομηνία Δημοσίευσης | 2020 | - |
| Θεματική Κατηγορία | PDMS-TEOS-nano-calcium oxalate nanocomposite | en |
| Θεματική Κατηγορία | Concrete conservation | en |
| Θεματική Κατηγορία | Hydrophobic consolidant | en |
| Θεματική Κατηγορία | Compatible | en |
| Θεματική Κατηγορία | Cultural heritage conservation | en |
| Βιβλιογραφική Αναφορά | K. Kapetanaki, E. Vazgiouraki, D. Stefanakis, A. Fotiou, G. C. Anyfantis, I. García-Lodeiro, M. T. Blanco-Varela, I. Arabatzis, and P. N. Maravelaki, “TEOS modified with nano-calcium oxalate and PDMS to protect concrete based cultural heritage buildings,” Front. Mater., vol. 7, Feb. 2020. doi: 10.3389/fmats.2020.00016 | en |
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