Comparison of the Physical Properties and Chemical Structures of the Tahe Asphalt Before and After Oxidative Aging

Ning, Aimin; Shen, Beijun; Long, Jonathan; Zhao, Jigang

doi:10.1080/15567036.2011.621011

Energy Sources, Part A: Recovery, Utilization, and Environmenta

2015

DOI: 10.1080/15567036.2011.621011

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Comparison of the Physical Properties and Chemical Structures of the Tahe Asphalt Before and After Oxidative Aging

Aimin Ning

Beijun Shen

Jonathan Long

et al.

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Cited by 5 publications

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“…In contrast, TH another petroleum asphalt variety produced in Xinjiang, diverged from KLMY. With a significantly higher asphaltene content than commonly used road petroleum asphalt, TH excels in hightemperature performance but exhibited poorer low-temperature ductility, coupled with a relatively lower price (Ning et al, 2015). In practical engineering in Xinjiang, there was widespread reliance on asphalt from other provinces or imports for modification, hindering cost control and large-scale application.…”

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Comparative study of typical asphalt binders in Xinjiang region modified with warm mix additives

Hu,

Ai,

Feng

2024

Front. Mater.

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Xinjiang’s representative asphalt binders, such as Karamay and Tahe asphalt, lack sufficient research on warm-mix additive modification effects. Given their unique microstructure and molecular composition differences, comprehensive investigations are essential for a nuanced understanding of these binders. This study added Sasobit and Evotherm warm mix additives to Karamay 90# asphalt and Tahe 90# asphalt, respectively. The evaluation of diverse warm mix additives’ impact on diverse asphalt binders involved viscosity, softening point, penetration tests, Fourier transform infrared (FTIR) and analysis of saturate, aromatic, resin, and asphaltene (SARA) fractions. Additionally, molecular models of asphalt were constructed using Materials Studio software, based on the SARA test data. Molecular models of Sasobit and Evotherm were also developed, representing organic wax and a cationic quaternary ammonium surfactant, respectively. Conducting molecular dynamics simulations of warm mix additives and two asphalt molecules yielded valuable insights into solubility parameters and the radial distribution function (RDF). This approach enabled a thorough and comparative exploration of the modification mechanisms employed by various warm mix additives on different asphalt types at a molecular scale. The results indicate that, Evotherm excelled in enhancing high-temperature asphalt performance, while Sasobit surpassed it in low-temperature. The viscosity reduction by Sasobit proved more effective for K90, while for T90 asphalt, the trend was reversed with Evotherm exhibiting superior performance. The solubility parameter in MD simulations consistently correlates with asphalt viscosity results. Sasobit showed enhanced compatibility with K90 asphalt, while T90 asphalt demonstrated greater suitability for modification with Evotherm.

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mentioning

confidence: 99%

Comparative study of typical asphalt binders in Xinjiang region modified with warm mix additives

Hu,

Ai,

Feng

2024

Front. Mater.

View full text Add to dashboard Cite

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Preparation and performance of 3-aminopropyltriethoxysilane surface modified layered double hydroxides on ultraviolet aging resistance of bitumen

Zhang

et al. 2021

Construction and Building Materials

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Investigation on the mechanism and performance of asphalt and its mixture regenerated by waste engine oil

Chen

et al. 2021

Construction and Building Materials

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Comparison of the Physical Properties and Chemical Structures of the Tahe Asphalt Before and After Oxidative Aging

Cited by 5 publications

References 4 publications

Comparative study of typical asphalt binders in Xinjiang region modified with warm mix additives

Comparative study of typical asphalt binders in Xinjiang region modified with warm mix additives

Preparation and performance of 3-aminopropyltriethoxysilane surface modified layered double hydroxides on ultraviolet aging resistance of bitumen

Investigation on the mechanism and performance of asphalt and its mixture regenerated by waste engine oil

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