Influence of Coal Liquefaction Residues as Fine Aggregate Replacement on Asphalt Mixture Performance and Adsorption Characteristics

Influence of Coal Liquefaction Residues as Fine Aggregate Replacement on Asphalt Mixture Performance and Adsorption Characteristics | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Influence of Coal Liquefaction Residues as Fine Aggregate Replacement on Asphalt Mixture Performance and Adsorption Characteristics Zhe Wang, Zhen Wang, Shuangfeng Guo, Chuan Sha, Yansheng Yang, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6886035/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 19 Dec, 2025 Read the published version in Scientific Reports → Version 1 posted 17 You are reading this latest preprint version Abstract This study investigates the influence of indirect coal liquefaction residue (ICLR) and direct coal liquefaction residue (DCLR) as fine aggregate replacements on the performance and asphalt-aggregate adsorption characteristics of asphalt mixtures. Equal-volume replacements of limestone fine aggregate with ICLR/DCLR particles were designed using the Marshall method. Road performance was evaluated through high-temperature rutting, low-temperature bending, freeze-thaw splitting, and immersion-Marshall tests. Adsorption behaviors and asphalt film thickness were analyzed to correlate with mechanical properties. Key findings reveal that ICLR single-size substitution (1.18 2.36 mm or 2.36 4.75 mm) exhibited superior rutting resistance, while dual/triple substitutions showed reduced performance. DCLR single-size substitution (0.6 1.18 mm) yielded the strongest rutting resistance. ICLR substitutions had minimal impact on low-temperature flexibility, whereas DCLR substitutions slightly reduced low-temperature ductility. Both ICLR and DCLR significantly improved water stability, with single-size substitutions demonstrating the most pronounced effect. Limestone aggregate exhibited the highest asphalt adsorption capacity, followed by ICLR and DCLR. However, DCLR demonstrated faster adsorption kinetics. Asphalt film thickness negatively correlated with rutting resistance (TSR) and low-temperature strain but showed weak correlations with water stability metrics. single-size ICLR (1.18 2.36 mm) or DCLR (0.6~1.18 mm) replacements (≤ 11% by volume) to balance high-temperature stability, water resistance, and mechanical integrity. These findings advance the sustainable utilization of coal liquefaction residues in asphalt pavements. Physical sciences/Engineering Physical sciences/Materials science Coal liquefaction residue Fine aggregate Asphalt mixture Adsorption system Pavement performance Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 19 Dec, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 25 Jul, 2025 Reviewers agreed at journal 18 Jul, 2025 Reviews received at journal 18 Jul, 2025 Reviews received at journal 18 Jul, 2025 Reviewers agreed at journal 18 Jul, 2025 Reviewers agreed at journal 18 Jul, 2025 Reviews received at journal 18 Jul, 2025 Reviewers agreed at journal 17 Jul, 2025 Reviewers agreed at journal 12 Jul, 2025 Reviews received at journal 09 Jul, 2025 Reviewers agreed at journal 07 Jul, 2025 Reviewers agreed at journal 07 Jul, 2025 Reviewers invited by journal 07 Jul, 2025 Editor assigned by journal 07 Jul, 2025 Editor invited by journal 07 Jul, 2025 Submission checks completed at journal 02 Jul, 2025 First submitted to journal 02 Jul, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6886035","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":482423563,"identity":"7da0d8c5-f3be-41f4-a11f-6c1211db7b67","order_by":0,"name":"Zhe Wang","email":"","orcid":"","institution":"Beijing Municipal Road \u0026 Bridge Building Material Group Co. 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Equal-volume replacements of limestone fine aggregate with ICLR/DCLR particles were designed using the Marshall method. Road performance was evaluated through high-temperature rutting, low-temperature bending, freeze-thaw splitting, and immersion-Marshall tests. Adsorption behaviors and asphalt film thickness were analyzed to correlate with mechanical properties. Key findings reveal that ICLR single-size substitution (1.18~2.36 mm or 2.36~4.75 mm) exhibited superior rutting resistance, while dual/triple substitutions showed reduced performance. DCLR single-size substitution (0.6~1.18 mm) yielded the strongest rutting resistance. ICLR substitutions had minimal impact on low-temperature flexibility, whereas DCLR substitutions slightly reduced low-temperature ductility. Both ICLR and DCLR significantly improved water stability, with single-size substitutions demonstrating the most pronounced effect. Limestone aggregate exhibited the highest asphalt adsorption capacity, followed by ICLR and DCLR. However, DCLR demonstrated faster adsorption kinetics. Asphalt film thickness negatively correlated with rutting resistance (TSR) and low-temperature strain but showed weak correlations with water stability metrics. single-size ICLR (1.18~2.36 mm) or DCLR (0.6~1.18 mm) replacements (≤ 11% by volume) to balance high-temperature stability, water resistance, and mechanical integrity. 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