@article{pub.1195070412,
 abstract = {To investigate the relationship between crude oil composition and bitumen properties, bitumen samples from single and blended crude oils were systematically analyzed. Structural group characterization and FT-IR spectroscopy quantified compositional and structural variations, while AFM examined the microstructure, including bee structures. Kendall’s rank correlation assessed relationships between crude oil parameters and bitumen chemical composition, microstructure, and mechanical performance. Type I blends (1:1 co-refining of high- and relatively low-saturate high-sulfur crudes) showed increased alkyl carbon and decreased functional groups (e.g., sulfoxide, SO), forming longer, slender bee structures with higher aspect ratios. Type II blends (high- and low-asphaltene high-sulfur crudes) exhibited higher functional group content and reduced alkyl carbon, forming distinctly branched bee structures. Creep stiffness at −12 ℃ negatively correlated with slender bee numbers, linked to crude saturate content; stiffness at −18 ℃, high-temperature creep rate, and intermediate-temperature relaxation rate negatively correlated with medium bee populations, associated with crude aromaticity and H/C ratio. After aging, the performance improvement of blends was reduced, though the exemplary B13–5:5 reached a low-temperature grade of −28 ℃. Relaxation time negatively correlated with small bee structures, reflecting crude heteroatom effects. These findings provide mechanistic insights into optimizing bitumen performance via targeted crude oil selection and blending strategies.},
 author = {Shuang, Tian and Liyan, Shan and Cong, Qi and Enhao, Zhang and Jinlong, Yang and Bei, Wang and Gershome, Abaho G.},
 date = {2026-02},
 doi = {10.1016/j.colsurfa.2025.138967},
 journal = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
 keywords = {},
 number = {},
 pages = {138967},
 title = {Effects of crude oil composition on bitumen microstructure and performance: Insights from blending and microstructural characterization},
 url = {https://app.dimensions.ai/details/publication/pub.1195070412},
 volume = {731},
 year = {2026}
}

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Type I blends (1:1 co-refining of high- and relatively low-saturate high-sulfur crudes) showed increased alkyl carbon and decreased functional groups (e.g., sulfoxide, SO), forming longer, slender bee structures with higher aspect ratios. Type II blends (high- and low-asphaltene high-sulfur crudes) exhibited higher functional group content and reduced alkyl carbon, forming distinctly branched bee structures. Creep stiffness at −12 ℃ negatively correlated with slender bee numbers, linked to crude saturate content; stiffness at −18 ℃, high-temperature creep rate, and intermediate-temperature relaxation rate negatively correlated with medium bee populations, associated with crude aromaticity and H/C ratio. After aging, the performance improvement of blends was reduced, though the exemplary B13–5:5 reached a low-temperature grade of −28 ℃. Relaxation time negatively correlated with small bee structures, reflecting crude heteroatom effects. These findings provide mechanistic insights into optimizing bitumen performance via targeted crude oil selection and blending strategies.","author":[{"propositions":[],"lastnames":["Shuang"],"firstnames":["Tian"],"suffixes":[]},{"propositions":[],"lastnames":["Liyan"],"firstnames":["Shan"],"suffixes":[]},{"propositions":[],"lastnames":["Cong"],"firstnames":["Qi"],"suffixes":[]},{"propositions":[],"lastnames":["Enhao"],"firstnames":["Zhang"],"suffixes":[]},{"propositions":[],"lastnames":["Jinlong"],"firstnames":["Yang"],"suffixes":[]},{"propositions":[],"lastnames":["Bei"],"firstnames":["Wang"],"suffixes":[]},{"propositions":[],"lastnames":["Gershome"],"firstnames":["Abaho","G."],"suffixes":[]}],"date":"2026-02","doi":"10.1016/j.colsurfa.2025.138967","journal":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","keywords":"","number":"","pages":"138967","title":"Effects of crude oil composition on bitumen microstructure and performance: Insights from blending and microstructural characterization","url":"https://app.dimensions.ai/details/publication/pub.1195070412","volume":"731","year":"2026","bibtex":"@article{pub.1195070412,\n abstract = {To investigate the relationship between crude oil composition and bitumen properties, bitumen samples from single and blended crude oils were systematically analyzed. Structural group characterization and FT-IR spectroscopy quantified compositional and structural variations, while AFM examined the microstructure, including bee structures. Kendall’s rank correlation assessed relationships between crude oil parameters and bitumen chemical composition, microstructure, and mechanical performance. Type I blends (1:1 co-refining of high- and relatively low-saturate high-sulfur crudes) showed increased alkyl carbon and decreased functional groups (e.g., sulfoxide, SO), forming longer, slender bee structures with higher aspect ratios. Type II blends (high- and low-asphaltene high-sulfur crudes) exhibited higher functional group content and reduced alkyl carbon, forming distinctly branched bee structures. Creep stiffness at −12 ℃ negatively correlated with slender bee numbers, linked to crude saturate content; stiffness at −18 ℃, high-temperature creep rate, and intermediate-temperature relaxation rate negatively correlated with medium bee populations, associated with crude aromaticity and H/C ratio. After aging, the performance improvement of blends was reduced, though the exemplary B13–5:5 reached a low-temperature grade of −28 ℃. Relaxation time negatively correlated with small bee structures, reflecting crude heteroatom effects. These findings provide mechanistic insights into optimizing bitumen performance via targeted crude oil selection and blending strategies.},\n author = {Shuang, Tian and Liyan, Shan and Cong, Qi and Enhao, Zhang and Jinlong, Yang and Bei, Wang and Gershome, Abaho G.},\n date = {2026-02},\n doi = {10.1016/j.colsurfa.2025.138967},\n journal = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},\n keywords = {},\n number = {},\n pages = {138967},\n title = {Effects of crude oil composition on bitumen microstructure and performance: Insights from blending and microstructural characterization},\n url = {https://app.dimensions.ai/details/publication/pub.1195070412},\n volume = {731},\n year = {2026}\n}\n\n","author_short":["Shuang, T.","Liyan, S.","Cong, Q.","Enhao, Z.","Jinlong, Y.","Bei, W.","Gershome, A. 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