New methods for assessing brick resistance to freeze-thaw cycles
| Autor: | I. Netinger-Grubeša, M. Benšić, M. Vračević |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Materiales de Construccion, Vol 71, Iss 343 (2021) |
| Druh dokumentu: | article |
| ISSN: | 0465-2746 1988-3226 |
| DOI: | 10.3989/mc.2021.04421 |
| Popis: | The aim of this research is to analyse the reliability of the existing methods, and find new ones, for assessing brick resistance to freeze-thaw cycles. A series of bricks were tested against a range of properties; compressive strength ratios pre- to post-freezing and Maage’s factor, were calculated. Using a database created in this way, an analysis of existing classifiers was carried out and new ones were established based on which bricks could be classified into resistant and non-resistant to freeze-thaw cycles. The median pore radius, the ratio of compressive strengths pre- to post-freezing and the water desorption coefficient at 180-360 minutes proved to be good classifiers with a clearly specified cut-off for the distinction between resistant and non-resistant bricks with an acceptable risk of a wrong decision. The ratio of compressive strengths pre to post freezing and the water desorption coefficient at 180-360 minutes were described using the pore system in the brick. |
| Databáze: | Directory of Open Access Journals |
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