Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

The effect of sargassum particle size on the final properties of sargassum-modified asphalt is investigated in this article. Seaweed sargassum particles were first obtained and characterized through elemental analysis, thermogravimetric analysis (TGA), X-ray diffraction, and FTIR spectroscopy. Addit...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Francisco Javier Escobar-Medina, José Luis Rivera-Armenta, Gabriel Hernández-Zamora, Beatriz Adriana Salazar-Cruz, Samuel Zapién-Castillo, Cynthia Graciela Flores-Hernández
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sargassum-modified asphalt size particle effect physical tests rheological behavior Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/92c8eec47ba94c888c616544e1de3e7f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:92c8eec47ba94c888c616544e1de3e7f
record_format	dspace
spelling	oai:doaj.org-article:92c8eec47ba94c888c616544e1de3e7f2021-11-11T19:27:22ZSargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties10.3390/su1321117342071-1050https://doaj.org/article/92c8eec47ba94c888c616544e1de3e7f2021-10-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/11734https://doaj.org/toc/2071-1050The effect of sargassum particle size on the final properties of sargassum-modified asphalt is investigated in this article. Seaweed sargassum particles were first obtained and characterized through elemental analysis, thermogravimetric analysis (TGA), X-ray diffraction, and FTIR spectroscopy. Additionally, pure and sargassum-modified asphalt blends were evaluated through physical and rheological tests such as penetration, softening point, thermal stability, dynamic viscosity, failure temperature, and epifluorescence microscopy. Modified asphalt blends were prepared by the hot mixing technique using different proportions of sargassum particles of two maximum sizes: 500 μm and 850 μm. Incorporating 3.0 wt.% of sargassum particles under 500 μm into the asphalt increased the viscosity of the original binder by a factor of 2.5 and its complex modulus by a factor of 1.9. At the same time, its failure temperature was 11 °C higher than the reference asphalt, which implies an improved viscoelastic behavior and rutting resistance at high temperatures. The study results suggest that the particles under 500 μm were responsible for the most significant effect on the final properties of the asphalt. Moreover, the storage stability test revealed that the modified asphalt blends are stable when the sargassum particle content was kept below 3.0 wt.%. The statistical analysis of the effect of sargassum particle size and concentration on the modified asphalt properties revealed that the rheological behavior is more affected by the modifier particle size; in contrast, the conventional physical properties were more determined by its concentration. Therefore, using low proportions of fine sargassum particles is efficient for improving the physical and rheological properties of the original asphalt, which is not only positive from the asphalt modification technology point of view but also from a sustainable perspective, since seaweed sargassum has become a useless plague in many coastal regions.Francisco Javier Escobar-MedinaJosé Luis Rivera-ArmentaGabriel Hernández-ZamoraBeatriz Adriana Salazar-CruzSamuel Zapién-CastilloCynthia Graciela Flores-HernándezMDPI AGarticlesargassum-modified asphaltsize particle effectphysical testsrheological behaviorEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 11734, p 11734 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sargassum-modified asphalt size particle effect physical tests rheological behavior Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	sargassum-modified asphalt size particle effect physical tests rheological behavior Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Francisco Javier Escobar-Medina José Luis Rivera-Armenta Gabriel Hernández-Zamora Beatriz Adriana Salazar-Cruz Samuel Zapién-Castillo Cynthia Graciela Flores-Hernández Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
description	The effect of sargassum particle size on the final properties of sargassum-modified asphalt is investigated in this article. Seaweed sargassum particles were first obtained and characterized through elemental analysis, thermogravimetric analysis (TGA), X-ray diffraction, and FTIR spectroscopy. Additionally, pure and sargassum-modified asphalt blends were evaluated through physical and rheological tests such as penetration, softening point, thermal stability, dynamic viscosity, failure temperature, and epifluorescence microscopy. Modified asphalt blends were prepared by the hot mixing technique using different proportions of sargassum particles of two maximum sizes: 500 μm and 850 μm. Incorporating 3.0 wt.% of sargassum particles under 500 μm into the asphalt increased the viscosity of the original binder by a factor of 2.5 and its complex modulus by a factor of 1.9. At the same time, its failure temperature was 11 °C higher than the reference asphalt, which implies an improved viscoelastic behavior and rutting resistance at high temperatures. The study results suggest that the particles under 500 μm were responsible for the most significant effect on the final properties of the asphalt. Moreover, the storage stability test revealed that the modified asphalt blends are stable when the sargassum particle content was kept below 3.0 wt.%. The statistical analysis of the effect of sargassum particle size and concentration on the modified asphalt properties revealed that the rheological behavior is more affected by the modifier particle size; in contrast, the conventional physical properties were more determined by its concentration. Therefore, using low proportions of fine sargassum particles is efficient for improving the physical and rheological properties of the original asphalt, which is not only positive from the asphalt modification technology point of view but also from a sustainable perspective, since seaweed sargassum has become a useless plague in many coastal regions.
format	article
author	Francisco Javier Escobar-Medina José Luis Rivera-Armenta Gabriel Hernández-Zamora Beatriz Adriana Salazar-Cruz Samuel Zapién-Castillo Cynthia Graciela Flores-Hernández
author_facet	Francisco Javier Escobar-Medina José Luis Rivera-Armenta Gabriel Hernández-Zamora Beatriz Adriana Salazar-Cruz Samuel Zapién-Castillo Cynthia Graciela Flores-Hernández
author_sort	Francisco Javier Escobar-Medina
title	Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
title_short	Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
title_full	Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
title_fullStr	Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
title_full_unstemmed	Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties
title_sort	sargassum-modified asphalt: effect of particle size on its physicochemical, rheological, and morphological properties
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/92c8eec47ba94c888c616544e1de3e7f
work_keys_str_mv	AT franciscojavierescobarmedina sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties AT joseluisriveraarmenta sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties AT gabrielhernandezzamora sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties AT beatrizadrianasalazarcruz sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties AT samuelzapiencastillo sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties AT cynthiagracielafloreshernandez sargassummodifiedasphalteffectofparticlesizeonitsphysicochemicalrheologicalandmorphologicalproperties
_version_	1718431540283703296

Sargassum-Modified Asphalt: Effect of Particle Size on Its Physicochemical, Rheological, and Morphological Properties

Ejemplares similares