Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt

The influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major...

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Autores principales:	Jingrong Zhu, Wenyuan Xu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	silica fume composite-modified asphalt rheological properties aging resistance aging mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/d219dda2d8014b5da5a5866850336226
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spelling	oai:doaj.org-article:d219dda2d8014b5da5a58668503362262021-11-11T18:06:05ZAging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt10.3390/ma142165361996-1944https://doaj.org/article/d219dda2d8014b5da5a58668503362262021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6536https://doaj.org/toc/1996-1944The influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major-indices, dynamic shear rheology, and bending beam rheometer tests. Fourier transform infrared spectroscopy was used to examine the changes in the functional groups of the asphalt. The silica fume did not chemically react with the modified asphalt, and its original structure was maintained. The aging resistance improved significantly after adding the silica fume. At 6% silica fume content, the relaxation of the asphalt was the highest, indicating that the asphalt had the best low-temperature crack resistance at this mixing proportion. Furthermore, the carbonyl index value of this sample exhibited the smallest increment among all of the samples, and this asphalt sample had the strongest short-term aging resistance. Thus, the optimum silica fume content in the composite-modified asphalt was determined to be 6%. This information may be used to fabricate an asphalt mixture that can improve the service life and aging resistance of pavements.Jingrong ZhuWenyuan XuMDPI AGarticlesilica fumecomposite-modified asphaltrheological propertiesaging resistanceaging mechanismTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6536, p 6536 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	silica fume composite-modified asphalt rheological properties aging resistance aging mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	silica fume composite-modified asphalt rheological properties aging resistance aging mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Jingrong Zhu Wenyuan Xu Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
description	The influences of silica fume content and aging on the rheological properties of silica fume/styrene-butadiene-styrene composite-modified asphalts were investigated via rolling thin-film oven test simulations. The asphalts rheological properties before and after aging were measured using three-major-indices, dynamic shear rheology, and bending beam rheometer tests. Fourier transform infrared spectroscopy was used to examine the changes in the functional groups of the asphalt. The silica fume did not chemically react with the modified asphalt, and its original structure was maintained. The aging resistance improved significantly after adding the silica fume. At 6% silica fume content, the relaxation of the asphalt was the highest, indicating that the asphalt had the best low-temperature crack resistance at this mixing proportion. Furthermore, the carbonyl index value of this sample exhibited the smallest increment among all of the samples, and this asphalt sample had the strongest short-term aging resistance. Thus, the optimum silica fume content in the composite-modified asphalt was determined to be 6%. This information may be used to fabricate an asphalt mixture that can improve the service life and aging resistance of pavements.
format	article
author	Jingrong Zhu Wenyuan Xu
author_facet	Jingrong Zhu Wenyuan Xu
author_sort	Jingrong Zhu
title	Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
title_short	Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
title_full	Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
title_fullStr	Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
title_full_unstemmed	Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt
title_sort	aging resistance of silica fume/styrene-butadiene-styrene composite-modified asphalt
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d219dda2d8014b5da5a5866850336226
work_keys_str_mv	AT jingrongzhu agingresistanceofsilicafumestyrenebutadienestyrenecompositemodifiedasphalt AT wenyuanxu agingresistanceofsilicafumestyrenebutadienestyrenecompositemodifiedasphalt
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Aging Resistance of Silica Fume/Styrene-Butadiene-Styrene Composite-Modified Asphalt

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