Effect of Biochar from Oat Hulls on the Physical Properties of Asphalt Binder

Primer Autor
Valdes-Vidal, Gonzalo
Co-autores
Martinez-Toledo, Camila
Calabi-Floody, Alejandra
Eugenia Gonzalez, Maria
Reyes-Ortiz, Oscar
Título
Effect of Biochar from Oat Hulls on the Physical Properties of Asphalt Binder
Editorial
MDPI
Revista
MATERIALS
Lenguaje
en
Resumen
The purpose of this study was to verify the feasibility of using biochar from oat hulls (BO) as a potential bio-modifier to improve the physical properties of conventional asphalt binder. The BO and asphalt binder were characterized by confocal (fluorescence) laser microscopy, scanning electron microscopy and Fourier transform infrared spectroscopy. Then, an asphalt binder modification procedure was established and modifications with 2.5, 5.0 and 7.5% of BO on the weight of the asphalt binder were evaluated, using a particle size < 75 mu m. The physical properties of the evaluated modified asphalt binder with BO were: rotational viscosity in original and aged state, aging index, Fraass breaking point, softening point, penetration, penetration rate and storage stability. The results indicated that the BO has a porous structure, able to interact with the asphalt binder by C=O and C=C bonds. In addition, modification of the asphalt binder with BO increases the rotational viscosity related to high-temperature rutting resistance. The results obtained from the Fraass breaking point and softening point indicated that the use of BO extends the viscoelastic range of the asphalt binder. In addition, the evaluated modifications present low susceptibility to aging and good storage stability.
Tipo de Recurso
artículo original
doi
10.3390/ma15197000
Formato Recurso
PDF
Palabras Claves
biochar
asphalt binder
physical properties
CEMENT
Ubicación del archivo
http://dx.doi.org/10.3390/ma15197000
Categoría OCDE
Química Física
Ciencia de Materiales
Multidisciplinaria
Metalurgia e Ingeniería Metalúrgica
Física Aplicada
Física
Materia Condensada
Materias
biocarbón
aglomerante asfáltico
propiedades físicas
CEMENTO
Disciplinas de la OCDE
Ingeniería de los Materiales
Ingeniería Química
Otras Ingenierías y Tecnologías
Título de la cita (Recomendado-único)
Effect of Biochar from Oat Hulls on the Physical Properties of Asphalt Binder
Identificador del recurso (Mandatado-único)
artículo original
Versión del recurso (Recomendado-único)
version publicada
License
CC BY 4.0
Condición de la licencia (Recomendado-repetible)
CC BY 4.0
Derechos de acceso
acceso abierto
Access Rights
acceso abierto
Id de Web of Science
WOS:000868137000001
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