Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder

Sidharth Reddy Karnati; Daniel Oldham; Elham H. Fini; Lifeng Zhang

doi:10.1016/j.conbuildmat.2019.03.257

Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder

Sidharth Reddy Karnati, Daniel Oldham, Elham H. Fini, Lifeng Zhang

Sustainable Engineering and the Built Environment, School of (IAFSE-SEBE)

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

Oxidation aging of asphalt pavement is among most prevalent factors causing pavement distresses. Introduction of silica nanoparticles (SNPs) has been found promising to reduce oxidation aging of asphalt binder. However, the effectiveness of SNPs is limited by their poor dispersion caused mainly by SNP agglomeration requiring significant mechanical energy in processing to ensure dispersion. This paper examined merits of surface functionalization of SNPs with (3-aminopropyl) triethoxysilane (APTES) to improve its dispersion in asphalt binder using conventional processing techniques at relatively high loading of SNPs with low mechanical energy input. The morphology, size, amount of amine functional groups of APTES surface-modified SNPs (APTES-SNPs) were characterized and optimized by scanning electron microscope (SEM), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FTIR) and fluorescence measurement. The comparison between the surface-modified and pristine SNPs on the anti-aging and rheological properties of asphalt binder was conducted. The asphalt binders which contained APTES-SNPs demonstrated much better resistance to oxidative aging as evidenced by enhanced rheological properties compared to those containing pristine SNPs. The findings from this research provides insights as to the effect of APTES-SNPs on aging resistance of asphalt binder.

Original language	English (US)
Pages (from-to)	1065-1072
Number of pages	8
Journal	Construction and Building Materials
Volume	211
DOIs	https://doi.org/10.1016/j.conbuildmat.2019.03.257
State	Published - Jun 30 2019

Keywords

Agglomeration
Anti-aging
Asphalt binder
Dispersion
Silica nanoparticles
Surface functionalization

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Materials Science(all)

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10.1016/j.conbuildmat.2019.03.257

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title = "Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder",

abstract = "Oxidation aging of asphalt pavement is among most prevalent factors causing pavement distresses. Introduction of silica nanoparticles (SNPs) has been found promising to reduce oxidation aging of asphalt binder. However, the effectiveness of SNPs is limited by their poor dispersion caused mainly by SNP agglomeration requiring significant mechanical energy in processing to ensure dispersion. This paper examined merits of surface functionalization of SNPs with (3-aminopropyl) triethoxysilane (APTES) to improve its dispersion in asphalt binder using conventional processing techniques at relatively high loading of SNPs with low mechanical energy input. The morphology, size, amount of amine functional groups of APTES surface-modified SNPs (APTES-SNPs) were characterized and optimized by scanning electron microscope (SEM), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FTIR) and fluorescence measurement. The comparison between the surface-modified and pristine SNPs on the anti-aging and rheological properties of asphalt binder was conducted. The asphalt binders which contained APTES-SNPs demonstrated much better resistance to oxidative aging as evidenced by enhanced rheological properties compared to those containing pristine SNPs. The findings from this research provides insights as to the effect of APTES-SNPs on aging resistance of asphalt binder.",

keywords = "Agglomeration, Anti-aging, Asphalt binder, Dispersion, Silica nanoparticles, Surface functionalization",

author = "Karnati, {Sidharth Reddy} and Daniel Oldham and Fini, {Elham H.} and Lifeng Zhang",

note = "Funding Information: This work is partially supported by the National Science Foundation (Awards No: 1150695). The authors thank the financial support from the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University, a member of Southeastern Nanotechnology Infrastructure Corridor (SENIC) and National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation (ECCS-1542174). None. Funding Information: This work is partially supported by the National Science Foundation (Awards No: 1150695). The authors thank the financial support from the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University , a member of Southeastern Nanotechnology Infrastructure Corridor (SENIC) and National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation (ECCS-1542174). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = jun,

day = "30",

doi = "10.1016/j.conbuildmat.2019.03.257",

language = "English (US)",

volume = "211",

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T1 - Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder

AU - Karnati, Sidharth Reddy

AU - Oldham, Daniel

AU - Fini, Elham H.

AU - Zhang, Lifeng

N1 - Funding Information: This work is partially supported by the National Science Foundation (Awards No: 1150695). The authors thank the financial support from the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University, a member of Southeastern Nanotechnology Infrastructure Corridor (SENIC) and National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation (ECCS-1542174). None. Funding Information: This work is partially supported by the National Science Foundation (Awards No: 1150695). The authors thank the financial support from the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University , a member of Southeastern Nanotechnology Infrastructure Corridor (SENIC) and National Nanotechnology Coordinated Infrastructure (NNCI), which is supported by the National Science Foundation (ECCS-1542174). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/6/30

Y1 - 2019/6/30

N2 - Oxidation aging of asphalt pavement is among most prevalent factors causing pavement distresses. Introduction of silica nanoparticles (SNPs) has been found promising to reduce oxidation aging of asphalt binder. However, the effectiveness of SNPs is limited by their poor dispersion caused mainly by SNP agglomeration requiring significant mechanical energy in processing to ensure dispersion. This paper examined merits of surface functionalization of SNPs with (3-aminopropyl) triethoxysilane (APTES) to improve its dispersion in asphalt binder using conventional processing techniques at relatively high loading of SNPs with low mechanical energy input. The morphology, size, amount of amine functional groups of APTES surface-modified SNPs (APTES-SNPs) were characterized and optimized by scanning electron microscope (SEM), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FTIR) and fluorescence measurement. The comparison between the surface-modified and pristine SNPs on the anti-aging and rheological properties of asphalt binder was conducted. The asphalt binders which contained APTES-SNPs demonstrated much better resistance to oxidative aging as evidenced by enhanced rheological properties compared to those containing pristine SNPs. The findings from this research provides insights as to the effect of APTES-SNPs on aging resistance of asphalt binder.

AB - Oxidation aging of asphalt pavement is among most prevalent factors causing pavement distresses. Introduction of silica nanoparticles (SNPs) has been found promising to reduce oxidation aging of asphalt binder. However, the effectiveness of SNPs is limited by their poor dispersion caused mainly by SNP agglomeration requiring significant mechanical energy in processing to ensure dispersion. This paper examined merits of surface functionalization of SNPs with (3-aminopropyl) triethoxysilane (APTES) to improve its dispersion in asphalt binder using conventional processing techniques at relatively high loading of SNPs with low mechanical energy input. The morphology, size, amount of amine functional groups of APTES surface-modified SNPs (APTES-SNPs) were characterized and optimized by scanning electron microscope (SEM), dynamic light scattering (DLS), Fourier-transform infrared spectroscopy (FTIR) and fluorescence measurement. The comparison between the surface-modified and pristine SNPs on the anti-aging and rheological properties of asphalt binder was conducted. The asphalt binders which contained APTES-SNPs demonstrated much better resistance to oxidative aging as evidenced by enhanced rheological properties compared to those containing pristine SNPs. The findings from this research provides insights as to the effect of APTES-SNPs on aging resistance of asphalt binder.

KW - Agglomeration

KW - Anti-aging

KW - Asphalt binder

KW - Dispersion

KW - Silica nanoparticles

KW - Surface functionalization

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DO - 10.1016/j.conbuildmat.2019.03.257

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SN - 0950-0618

VL - 211

SP - 1065

EP - 1072

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Surface functionalization of silica nanoparticles to enhance aging resistance of asphalt binder

Abstract

Keywords

ASJC Scopus subject areas

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