Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt

Hydrotalcite, a type of layered double hydroxide (LDH), reveals an interesting potential for the modification of bitumen. The LDH can induce a barrier effect that prevents the loss of volatiles, retards oxidation, and protects against ultraviolet radiation. Such properties can enhance the aging resi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	João Crucho, José Neves
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	stone mastic asphalt nanomaterials hydrotalcite mechanical performance surface characteristics aging resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/06a39bb0638d4ade8790bd3ecb6a5164
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:06a39bb0638d4ade8790bd3ecb6a5164
record_format	dspace
spelling	oai:doaj.org-article:06a39bb0638d4ade8790bd3ecb6a51642021-11-11T15:03:18ZEffect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt10.3390/app112199712076-3417https://doaj.org/article/06a39bb0638d4ade8790bd3ecb6a51642021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9971https://doaj.org/toc/2076-3417Hydrotalcite, a type of layered double hydroxide (LDH), reveals an interesting potential for the modification of bitumen. The LDH can induce a barrier effect that prevents the loss of volatiles, retards oxidation, and protects against ultraviolet radiation. Such properties can enhance the aging resistance of the bitumen. However, there is a gap in knowledge regarding the effects of the modification with hydrotalcite in the properties of the asphalt mixture. To contribute to fill such a gap, the current study presents a characterization of the effects of the modification with nano hydrotalcite in the surface characteristics, mechanical performance, and aging resistance of an asphalt mixture. To better explore the effects of the modification, the selected asphalt mixture was a high binder content (7.5%) Stone Mastic Asphalt (SMA). The experimental study indicates that the binder-rich SMA presented adequate performance for application in surface courses. If compared to conventional mixtures, the binder-rich SMA presented better initial mechanical performance (unaged conditions). Furthermore, it presented smaller variation in the parameters between unaged and aged conditions, indicating enhanced aging resistance. The modification with nano hydrotalcite induced smaller evolution in the fatigue resistance parameters, indicating enhanced aging resistance; however, in the remaining tests, the trends were not clear.João CruchoJosé NevesMDPI AGarticlestone mastic asphaltnanomaterialshydrotalcitemechanical performancesurface characteristicsaging resistanceTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9971, p 9971 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	stone mastic asphalt nanomaterials hydrotalcite mechanical performance surface characteristics aging resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	stone mastic asphalt nanomaterials hydrotalcite mechanical performance surface characteristics aging resistance Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 João Crucho José Neves Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
description	Hydrotalcite, a type of layered double hydroxide (LDH), reveals an interesting potential for the modification of bitumen. The LDH can induce a barrier effect that prevents the loss of volatiles, retards oxidation, and protects against ultraviolet radiation. Such properties can enhance the aging resistance of the bitumen. However, there is a gap in knowledge regarding the effects of the modification with hydrotalcite in the properties of the asphalt mixture. To contribute to fill such a gap, the current study presents a characterization of the effects of the modification with nano hydrotalcite in the surface characteristics, mechanical performance, and aging resistance of an asphalt mixture. To better explore the effects of the modification, the selected asphalt mixture was a high binder content (7.5%) Stone Mastic Asphalt (SMA). The experimental study indicates that the binder-rich SMA presented adequate performance for application in surface courses. If compared to conventional mixtures, the binder-rich SMA presented better initial mechanical performance (unaged conditions). Furthermore, it presented smaller variation in the parameters between unaged and aged conditions, indicating enhanced aging resistance. The modification with nano hydrotalcite induced smaller evolution in the fatigue resistance parameters, indicating enhanced aging resistance; however, in the remaining tests, the trends were not clear.
format	article
author	João Crucho José Neves
author_facet	João Crucho José Neves
author_sort	João Crucho
title	Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
title_short	Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
title_full	Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
title_fullStr	Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
title_full_unstemmed	Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt
title_sort	effect of nano hydrotalcite on the aging resistance of a high binder content stone mastic asphalt
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/06a39bb0638d4ade8790bd3ecb6a5164
work_keys_str_mv	AT joaocrucho effectofnanohydrotalciteontheagingresistanceofahighbindercontentstonemasticasphalt AT joseneves effectofnanohydrotalciteontheagingresistanceofahighbindercontentstonemasticasphalt
_version_	1718437096271642624

Effect of Nano Hydrotalcite on the Aging Resistance of a High Binder Content Stone Mastic Asphalt

Ejemplares similares