| Naslov: | Influence of the size and type of pores on brick resistance to freeze-thaw cycles |
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| Avtorji: | ID Netinger Grubeša, Ivanka (Avtor)
ID Vračević, Martina (Avtor)
ID Ducman, Vilma (Avtor)
ID Marković, Berislav (Avtor)
ID Szenti, Imre (Avtor)
ID Kukovecz, Ákos (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://www.mdpi.com/1996-1944/13/17/3717
Opis: Odprti dostop
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
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| Povzetek: | This paper estimates the frost resistance of bricks using the ratio of compressive strength before freezing to compressive strength after freezing to describe the damage degree of bricks being exposed to freeze-thaw cycles. In an effort to find the ratio that clearly distinguishes resistant bricks from non-resistant bricks, the authors attempted to establish the correlation between the ratio and Maage factor as a recognized model for assessing brick resistance. To clarify the degree of damage of individual bricks, the pore size distribution has been investigated by means of mercury porosimetry. Additionally, micro computed X-ray tomography (micro-CT) has been employed to define the influence of the type of pores (open or closed) and their connectivity on the frost resistance of bricks. According to the results, it can be concluded that there is a good correlation between the Maage factor and the ratio of pre- to post-freeze-thaw cycle compressive strengths, and that the latter ratio strongly correlates with the percentage of large pores (≥3 mm) in the brick. If such a correlation could be confirmed in a larger sample, then the ratio of pre- to post-freeze-thaw cycle compressive strengths could be used as a new method for assessing brick resistance to freeze-thaw cycles and it would be possible to determine the minimum percentage of large pores required to ensure the overall resistance of brick to freeze-thaw conditions. The complexity of the problem is, however, evidenced by the fact that no clear connection between the type (open versus closed) or connectivity of pores and the frost resistance of bricks could be revealed by micro-CT. |
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| Ključne besede: | clay masonry units, porosity, freeze-thaw resistance |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 22.08.2020 |
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| Založnik: | Molecular Diversity Preservation International |
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| Leto izida: | 2020 |
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| Št. strani: | str. 1-12 |
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| Številčenje: | Vol. 13, iss. 17 |
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| PID: | 20.500.12556/DiRROS-16463  |
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| UDK: | 620.1/2 |
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| ISSN pri članku: | 1996-1944 |
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| DOI: | 10.3390/ma13173717 |
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| COBISS.SI-ID: | 26659075 |
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| Avtorske pravice: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne 31. 8. 2020;
Št. članka 3717;
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| Datum objave v DiRROS: | 17.08.2023 |
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| Število ogledov: | 669 |
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| Število prenosov: | 359 |
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| Metapodatki: |    |
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