Evaluación de la influencia del grado de saturación, el tiempo de medición y el empleo de una pasta conductora en la determinación de la conductividad térmica en hormigones de peso normal y ligeros mediante el método del hilo caliente
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https://doi.org/10.3989/mc.2021.03621Palabras clave:
Hormigón, Propiedades físicas, Caracterización, Conductividad térmicaResumen
La determinación de la conductividad térmica en materiales cementicios es relevante desde el punto de vista de la eficiencia energética de edificios. La ausencia de ensayos unificados en morteros y hormigones da como resultado una heterogeneidad de los datos disponibles en la literatura. El objetivo del trabajo es determinar la influencia estadísticamente relevante que tres factores, grado de saturación, tiempo de medición y uso de una pasta conductora, tienen en la medición de la conductividad con aguja de hilo caliente en dos hormigones con diferente comportamiento térmico: hormigón de peso convencional y hormigón ligero. Los resultados permiten establecer recomendaciones para futuros investigadores sobre la información mínima a incluir en sus informes de conductividad térmica de materiales cementicios por el método de aguja de hilo caliente, la necesidad de tratar valores atípicos, las condiciones de saturación y tiempos de medición más favorables, así como posibles beneficios de utilizar una pasta conductora.
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