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https://hdl.handle.net/2183/46628 Análisis de la sensibilidad al agua de mezclas bituminosas en caliente fabricadas con filler procedente de residuos de corcho
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Pasandín, A.R., Pérez, I., Galán-Díaz, J.J. (2025). Análisis de la sensibilidad al agua de mezclas bituminosas en caliente fabricadas con filler procedente de residuos de corcho. Carreteras, 246, 67-74.
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Abstract
[Resumen] Resulta de interés analizar el efecto del biopolímero suberina presente en el corcho residual. En el presente artículo se describe la investigación que se llevó a cabo para analizar la posibilidad de utilizar polvo de corcho residual como polvo mineral o filler para la fabricación de mezclas bituminosas en caliente. El funcionamiento del corcho se comparó con el de un filler natural y con el del cemento Pórtland. Se obtuvo su distribución granulométrica, su morfología mediante microscopía electrónica de barrido (SEM), su composición mediante fluorescencia de rayos X (XRF), su contenido de agua y la calidad de sus finos. Para la adhesividad áridoligante se utilizó el “Boiling Water test” y el ensayo de la botella giratoria. Además, se estudió la sensibilidad al agua de mezclas fabricadas con varios contenidos de betún. El filler de corcho residual dio lugar a mezclas con un comportamiento frente a la acción del agua ligeramente superior al del filler natural.
[Abstract] It is interesting to analyse the effect of the suberin biopolymer present in the residual cork. This article describes the research that was carried out to analyse the feasibility of using residual dust cork as filler for the manufacture of hot-mix asphalt (HMA). The performance of cork was compared with that of a natural filler and with that of Portland cement. Its grain size distribution, its morphology by scanning electron microscopy, its composition by X-ray fluorescence, its water content and the quality of its fines were obtained. For aggregate-binder adhesion, the “Boiling Water test” and the giratory bottle test were used. In addition, the water sensitivity of HMA made with various bitumen contents was studied. The residual cork filler gave rise to HMA with a slightly superior performance against the action of water to that of the natural filler.
[Abstract] It is interesting to analyse the effect of the suberin biopolymer present in the residual cork. This article describes the research that was carried out to analyse the feasibility of using residual dust cork as filler for the manufacture of hot-mix asphalt (HMA). The performance of cork was compared with that of a natural filler and with that of Portland cement. Its grain size distribution, its morphology by scanning electron microscopy, its composition by X-ray fluorescence, its water content and the quality of its fines were obtained. For aggregate-binder adhesion, the “Boiling Water test” and the giratory bottle test were used. In addition, the water sensitivity of HMA made with various bitumen contents was studied. The residual cork filler gave rise to HMA with a slightly superior performance against the action of water to that of the natural filler.
Description
Parte de la presente investigación (caracterización de los fillers y estudio de la adhesividad árido-ligante) ha sido publicada previamente en Pasandín, A. R., Galán-Díaz, J. J. & Pérez, I. (2019). Adhesion analysis of waste cork dust as filler for bituminous mixtures. In Wastes: Solutions, Treatments and Opportunities III (pp. 1-6). CRC Press.







