New methods for assessing brick resistance to freeze-thaw cycles

I. Netinger-Grubeša; M. Benšić; M. Vračević

doi:10.3989/mc.2021.04421

Autores/as

I. Netinger-Grubeša Faculty of Civil Engineering and Architecture Osijek, University of Osijek, (Osijek, Croatia) https://orcid.org/0000-0002-6824-500X
M. Benšić Department of Mathematics, University of Osijek, (Osijek, Croatia) https://orcid.org/0000-0001-9063-0310
M. Vračević LabTech, Ulica borova, (Osijek, Croatia) https://orcid.org/0000-0002-9716-9704

DOI:

https://doi.org/10.3989/mc.2021.04421

Palabras clave:

Ladrillo, Ciclos hielo/deshielo, Criterios fiables para clasificar la resistencia del ladrillo, Análisis ROC

Resumen

El objetivo de esta investigación es analizar la fiabilidad de los métodos existentes para evaluar la resistencia de los ladrillos a los ciclos de hielo-deshielo, así como encontrar nuevos métodos. Se analizaron las propiedades de distintos ladrillos; se calculó la variación de la resistencia a compresión antes y después de la congelación, así como el factor de Maage. A partir de una base de datos creada para talfin, se llevó a cabo un análisis de los criterios de clasificación existentes, estableciéndose nuevos criterios para clasificar a los ladrillos entre resistentes y no resistentes a los ciclos de hielo-deshielo. El radio medio de los poros, la relación de la resistencia a compresión antes y después de la congelación y el coeficiente de desorción de agua a 180-360 minutos, demostraron ser útiles para realizar dicha clasificación, mostrando un riesgo aceptable de error. La relación de la resistencia a compresión antes y después de la congelación y el coeficiente de desorción de agua a los 180-360 minutos se describieron utilizando el sistema de poros en el ladrillo.

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