Pavement performance and modification mechanisms of asphalt binder with nano-Al
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Ji, Zhiyuan; Sun, Lu; Yao, Xueqing; Gu, Wei; Tian, Yao; Zhang, Xuanyu

doi:10.1080/10298436.2022.2136373

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…The variation in asphalt materials’ LT creep modulus (S) and creep rate (m value) is connected to the material’s capacity to withstand LT cracking during pavement usage. When S is large and m is small, the material’s brittle properties are more pronounced, and it is more susceptible to cracking damage [ 47 ]. Figs 17 and 18 show that increasing the quantity of SBS alone does not fulfill the performance criteria when compared to SBS-modified asphalt without CRP.…”

Section: Results and Analysismentioning

confidence: 99%

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

Sun,

Zhong,

Xiao

et al. 2024

PLoS ONE

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This research was based on a nano-AAT (American Advanced Technology)-modified asphalt to which CRP (crumb rubber powder), a rubber waste, was introduced to explore the influence of CRP on AAT performance. The changes in the performance of AAT-modified asphalt after the addition of CRP were analyzed. The rubber powder with the raw material of waste tire was added to the asphalt instead of SBS modifier. While achieving waste recycling, the asphalt material has good performance. Physical analysis methods, rheological performance tests, rolling thin-film oven tests and Fourier transform infrared spectroscopy tests were used to investigate the performance of the composite-modified asphalt. The rheological properties of the composite-modified asphalt were analyzed by means of DSR, BBR and MSCR tests, and the microscopic mechanism of the modified asphalt was investigated by means of FTIR tests. The optimal nano-AAT-composite-modified formulation A3C3 (AAT-3.5%SBS-3%CRP) was selected by evaluating the overall performance. Additionally, the performances of the AAT/CRP-composite-modified asphalt and SBS-modified asphalt were compared using physical indicators, the rutting factor, creep flexibility and the stiffness modulus. The results show that the A3C3-modified asphalt had better stiffness, high-temperature (HT) performance and aging resistance than the SBS-modified asphalt, but it was less effective at low temperatures (LTs). According to FTIR, the absorption curves of A3C3 and SBS are essentially equal, with A3C3 only having a variation at 1104 cm−1.

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Section: Results and Analysismentioning

confidence: 99%

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

Sun,

Zhong,

Xiao

et al. 2024

PLoS ONE

Self Cite

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“…As a result, they are widely used in asphalt modification research. Common polymer modified materials namely styrene butadiene styrene (SBS), polypropylene (PP) and polyethylene (PE) have faced challenges in forming a stable and compatible system with the asphalt in the engineering practices 7 , 8 . When polymer modified asphalt is stored under high temperature conditions, the polymer may be separated from the pure asphalt due to insufficient compatibility between the polymer modifier and the pure asphalt.…”

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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Analysis of low temperature flexural creep properties of mineral powder reinforced asphalt MPRA through combined experimentation and finite element simulation

Wu,

Liu,

Milani

et al. 2024

Construction and Building Materials

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Pavement performance and modification mechanisms of asphalt binder with nano-Al ₂ O ₃

Cited by 7 publications

References 39 publications

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

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

Analysis of low temperature flexural creep properties of mineral powder reinforced asphalt MPRA through combined experimentation and finite element simulation

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Pavement performance and modification mechanisms of asphalt binder with nano-Al 2 O 3

Cited by 7 publications

References 39 publications

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

Physical, rheological and microscopic properties of AAT nanomaterial/crumb rubber powder composite-modified asphalt and SBS-modified asphalt

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

Analysis of low temperature flexural creep properties of mineral powder reinforced asphalt MPRA through combined experimentation and finite element simulation

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Product

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Pavement performance and modification mechanisms of asphalt binder with nano-Al ₂ O ₃