The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt

To solve the problem of the pavement being aged due to the influence of temperature, light and other environmental factors are brought in service. Nano-CaCO3 surface was activated by 6% KH-550, and nano-ZnO surface was activated by 6% aluminate. Nano-CaCO3/nano-ZnO/SBR composite-modified asphalt was...

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Autores principales:	Li Zhenxia, Guo Tengteng, Chen Yukun, Liu Qi, Chen Yuanzhao
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	pavement material modification mechanism nanomaterials composite-modified asphalt microstructure Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/e8649e633e634d1499bef1dd0502223c
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spelling	oai:doaj.org-article:e8649e633e634d1499bef1dd0502223c2021-12-05T14:10:58ZThe properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt2191-909710.1515/ntrev-2021-0082https://doaj.org/article/e8649e633e634d1499bef1dd0502223c2021-09-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0082https://doaj.org/toc/2191-9097To solve the problem of the pavement being aged due to the influence of temperature, light and other environmental factors are brought in service. Nano-CaCO3 surface was activated by 6% KH-550, and nano-ZnO surface was activated by 6% aluminate. Nano-CaCO3/nano-ZnO/SBR composite-modified asphalt was prepared. The optimum proportion of composite-modified asphalt was determined by orthogonal test. The influence of modifiers on asphalt pavement performance was comprehensively studied. The microstructure of composite-modified asphalt was characterized by scanning electron microscopy and infrared spectroscopy. The mechanism of composite-modified asphalt was analyzed. The results show that the optimum combination of composite-modified asphalt is 4% nano-CaCO3 + 5% nano-ZnO + 4% SBR, the aging performance of the composite-modified asphalt is reduced by 6.9%, and the viscosity is increased by 14.6–23.1%. The complex shear modulus is increased by 24.1% at 82°C, the stiffness modulus is decreased, on average, by 21.1%. and the creep curve slope is increased by 9% on average. In the meantime, during the preparation process of composite-modified asphalt, it mainly occurred due to chemical reaction with surface-modified nanomaterials and physical change with SBR polymer materials.Li ZhenxiaGuo TengtengChen YukunLiu QiChen YuanzhaoDe Gruyterarticlepavement materialmodification mechanismnanomaterialscomposite-modified asphaltmicrostructureTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 1253-1265 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pavement material modification mechanism nanomaterials composite-modified asphalt microstructure Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	pavement material modification mechanism nanomaterials composite-modified asphalt microstructure Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Li Zhenxia Guo Tengteng Chen Yukun Liu Qi Chen Yuanzhao The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
description	To solve the problem of the pavement being aged due to the influence of temperature, light and other environmental factors are brought in service. Nano-CaCO3 surface was activated by 6% KH-550, and nano-ZnO surface was activated by 6% aluminate. Nano-CaCO3/nano-ZnO/SBR composite-modified asphalt was prepared. The optimum proportion of composite-modified asphalt was determined by orthogonal test. The influence of modifiers on asphalt pavement performance was comprehensively studied. The microstructure of composite-modified asphalt was characterized by scanning electron microscopy and infrared spectroscopy. The mechanism of composite-modified asphalt was analyzed. The results show that the optimum combination of composite-modified asphalt is 4% nano-CaCO3 + 5% nano-ZnO + 4% SBR, the aging performance of the composite-modified asphalt is reduced by 6.9%, and the viscosity is increased by 14.6–23.1%. The complex shear modulus is increased by 24.1% at 82°C, the stiffness modulus is decreased, on average, by 21.1%. and the creep curve slope is increased by 9% on average. In the meantime, during the preparation process of composite-modified asphalt, it mainly occurred due to chemical reaction with surface-modified nanomaterials and physical change with SBR polymer materials.
format	article
author	Li Zhenxia Guo Tengteng Chen Yukun Liu Qi Chen Yuanzhao
author_facet	Li Zhenxia Guo Tengteng Chen Yukun Liu Qi Chen Yuanzhao
author_sort	Li Zhenxia
title	The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
title_short	The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
title_full	The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
title_fullStr	The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
title_full_unstemmed	The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt
title_sort	properties of nano-caco3/nano-zno/sbr composite-modified asphalt
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/e8649e633e634d1499bef1dd0502223c
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The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt

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