Repositorio UFRO · Omeka S

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
Versión del recurso (Recomendado-único)	version publicada
Tipo de ruta	dorada verde
Access Rights	acceso abierto
Derechos de acceso	acceso abierto
Id de Web of Science	WOS:000868137000001
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
License	CC BY 4.0
Condición de la licencia (Recomendado-repetible)	CC BY 4.0