Influence of Nano-Al2O3 on the Evolution of Molecular Weight, Morphology, and Rheology of SBS-Modified Asphalt

Sun, Lu; Ji, Zhiyuan; Xu, Qiang; Lei, Yu; Li, Shuyang

doi:10.1061/jmcee7.mteng-16088

Cited by 3 publications

(1 citation statement)

References 60 publications

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“…At the same time, with the development of the social economy, the significantly increased traffic volume and load have required better performance of asphalt 1 – 3 . Modifying asphalt is one of the most effective ways to improve its performance, and polymer modifiers reveal outstanding reinforcing extent on the asphalt property 4 – 6 . As a result, they are widely used in asphalt modification research.…”

Section: Introductionmentioning

confidence: 99%

Effect of waste cooking oil on the performance of EVA modified asphalt and its mechanism analysis

Zhang,

Wang,

Kang

2024

Sci Rep

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The balance between the low and high temperature performance of asphalt materials is important to avoid either rutting deformation or low temperature cracking resistance of asphalt pavement. This is beneficial for improving the asphalt pavement comprehensive performance. Considering the excellent high temperature performance of Ethylene–vinyl acetate (EVA) modified asphalt, this study first modified it with Waste Biological Oil (WBO) to prepare WBO/EVA composite modified asphalt (WEMA) with different dosages. Then the samples were evaluated by the traditional physical properties, low and high temperature rheological properties. Finally, the micro mechanism of WBO on EVA modified asphalt were explored by gel permeation chromatography (GPC) test and atomic force microscope (AFM) experiments. The experimental results reveal that WBO has a softening effect on EVA modified asphalt, reducing its stiffness and improving its stretching performance and flowability. In addition, WBO can reduce the high-temperature deformation resistance of EMA modified asphalt, but it significantly enhances the low-temperature property of EVA modified asphalt. When the WBO content ranges from 1.5 to 2.5%, the high-temperature performance of WEMA is inferior to that of EVA-modified asphalt, however, its low-temperature performance is significantly better than that of EVA-modified asphalt. Importantly, within this WBO content range, the comprehensive performance of WEMA is superior to that of pure asphalt. Mechanism investigation showed that WBO reduces the content of macromolecular micelles and average molecular weight in EVA modified asphalt, and it also diluts the asphaltene components in the asphalt system, resulting in a slight weakening of the performance of WEMA at high temperatures and a significant performance enhancement at low temperatures. Ultimately, the utilization of WBO/EVA composite modified asphalt has a better comprehensive performance.

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Section: Introductionmentioning

confidence: 99%

Effect of waste cooking oil on the performance of EVA modified asphalt and its mechanism analysis

Zhang,

Wang,

Kang

2024

Sci Rep

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The Nano-Modified Polyacrylonitrile Fibers Based on LBL Self-Assembly Technology for the Performance Enhancement of SBS-Modified Asphalt

Li,

Yao,

Liu

2024

Arab J Sci Eng

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Nanomaterials for Modified Asphalt and Their Effects on Viscosity Characteristics: A Comprehensive Review

Huang,

Wang,

et al. 2024

Nanomaterials

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The application of nanomaterials as modifiers in the field of asphalt is increasingly widespread, and this paper aims to systematically review research on the impact of nanomaterials on asphalt viscosity. The results find that nanomaterials tend to increase asphalt’s viscosity, enhancing its resistance to high-temperature rutting and low-temperature cracking. Zero-dimension nanomaterials firmly adhere to the asphalt surface, augmenting non-bonding interactions through van der Waals forces and engaging in chemical reactions to form a spatial network structure. One-dimensional nanomaterials interact with non-polar asphalt molecules, forming bonds between tube walls, thereby enhancing adhesion, stability, and resistance to cyclic loading. Meanwhile, these bundled materials act as reinforcement to transmit stress, preventing or delaying crack propagation. Two-dimensional nanomaterials, such as graphene and graphene oxide, participate in chemical interactions, forming hydrogen bonds and aromatic deposits with asphalt molecules, affecting asphalt’s surface roughness and aggregate movement, which exhibit strong adsorption capacity and increase the viscosity of asphalt. Polymers reduce thermal movement and compact asphalt structures, absorbing light components and promoting the formation of a cross-linked network, thus enhancing high-temperature deformation resistance. However, challenges such as poor compatibility and dispersion, high production costs, and environmental and health concerns currently hinder the widespread application of nanomaterial-modified asphalt. Consequently, addressing these issues through comprehensive economic and ecological evaluations is crucial before large-scale practical implementation.

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Influence of Nano-Al2O3 on the Evolution of Molecular Weight, Morphology, and Rheology of SBS-Modified Asphalt

Cited by 3 publications

References 60 publications

Effect of waste cooking oil on the performance of EVA modified asphalt and its mechanism analysis

Effect of waste cooking oil on the performance of EVA modified asphalt and its mechanism analysis

The Nano-Modified Polyacrylonitrile Fibers Based on LBL Self-Assembly Technology for the Performance Enhancement of SBS-Modified Asphalt

Nanomaterials for Modified Asphalt and Their Effects on Viscosity Characteristics: A Comprehensive Review

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