Fuel最新文献

{"title":"Influence of conventional and supramolecular gellants on the rheological properties of JP-10 gel fuels","authors":"Hatice Özyetis ,&nbsp;Ahmet Koc ,&nbsp;Haci Esiyok ,&nbsp;Necati Özkan","doi":"10.1016/j.fuel.2025.136334","DOIUrl":"10.1016/j.fuel.2025.136334","url":null,"abstract":"<div><div>The effects of a conventional gellant and different types of supramolecular gellants on the rheological properties of JP-10 gel fuels are studied. Various concentrations of 1,2:5,6-di-O-isopropylidene-D-mannitol (IPM) and 1,2:5,6-di-O-cyclohexylidene-D-mannitol (CHM) supramolecular gellants are utilized for the preparation of JP-10 based gel fuels, and their rheological properties are compared with those of a conventional molecular gellant (Thixatrol ST (TST)) based gel fuel. Rheological characterization results show that all gellant types can create a gel structure within JP-10 fuel, including the TST-based gel fuel with a gellant concentration of 1.0 wt%, since their <em>tanδ</em> values are significantly lower than 1. The lowest <em>tanδ</em> values, hence the most significant solid-like behavior, were obtained for the TST-based gel fuels. However, the highest stiffness values were obtained for the CHM gellant-based JP-10 gel fuels, and the lowest stiffness values were obtained for the TST-based JP-10 gel fuels.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136334"},"PeriodicalIF":6.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the reaction mechanism on primary and secondary decomposition of iso-propylamine","authors":"Jia Yan ,&nbsp;Zhiyuan Shi ,&nbsp;Xingyu Liang ,&nbsp;Yongdi He ,&nbsp;Lei Cui ,&nbsp;Daigeng Wu ,&nbsp;Dong Li","doi":"10.1016/j.fuel.2025.136193","DOIUrl":"10.1016/j.fuel.2025.136193","url":null,"abstract":"<div><div>Iso-propylamine holds crucial significance as an intermediate in co-combustion processes and a favored amine donor, yet its comprehensive investigation remains limited. In this study, CCSD(T)/CBS//M06-2X-D3(0)/6–311++G(d,p) approach was employed to investigate the H-abstraction reactions of <em>iso</em>-propylamine, along with an analysis of subsequent primary and secondary decomposition reactions. Additionally, the kinetic data of all reactions on the potential energy surface was investigated via the transition state theory (TST), rigid-rotor-harmonic-oscillator (RRHO) model, and Eckart-effect tunneling correction. The results indicated that the H-abstraction reactions of NO₂ radicals with <em>iso</em>-propylamine were endothermic, whereas the H-abstraction reactions involving H/CH₃/NH₂ radicals with <em>iso</em>-propylamine were exothermic. The H-abstraction channels of <span><math><mrow><mi>β</mi></mrow></math></span>-site are most competitive at low temperatures, owing to its chemical energies of saddle points are relatively lower. The H-abstraction reactions of <em>iso</em>-propylamine are not affected by weak interactions which adhered to the Evans-Polanyi principle. Isomerization reactions predominantly occur at low temperatures due to their energetic favorability, while <span><math><mrow><mi>β</mi></mrow></math></span>-dissociation reactions become increasingly significant as the temperature increases. Consequently, <span><math><mrow><mi>β</mi></mrow></math></span>-dissociation emerges as the primary channels for the consumption of isopropyl radicals at the high temperatures. In the primary decomposition reactions, the scission of the C-N bond occurs readily. However, in the subsequent secondary decomposition stages, the scissions of C-N bond involve transition state which characterized by a higher-energy structure. This study extends the kinetic data on the primary and secondary decomposition of isopropyl radicals across a broad range of temperatures and pressures.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136193"},"PeriodicalIF":6.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling nanoparticle deposition rate in iron particle combustion","authors":"Nils Hartmann ,&nbsp;Andreas Kronenburg ,&nbsp;Thorsten Zirwes ,&nbsp;David Märker ,&nbsp;Tien Duc Luu ,&nbsp;Oliver Thomas Stein","doi":"10.1016/j.fuel.2025.136268","DOIUrl":"10.1016/j.fuel.2025.136268","url":null,"abstract":"<div><div>Iron powders attract increased interest as energy carrier as they can provide high temperature heat during combustion. The combustion products can be recycled using renewable energy leading to a carbon free and fully closed energy cycle. However, nanoparticles are formed as by-products. They are difficult to remove from the exhaust gases, and the slip of iron nanoparticles reduces cycle efficiency and compromises sustainability. Nanoparticle slip is reduced by their deposition onto the fuel microparticles that act as a spherical collector, but the fraction of the nanoparticles that do not escape due to deposition is totally unknown. In this study, Lagrangian and Eulerian simulations are performed to evaluate the deposition of nanoparticles onto microparticles due to inertial impaction and diffusion. The simulation results are validated with analytical solutions from the literature. Then, the effects of a positive and a negative Stefan flow occurring at the microparticle’s surface during combustion are investigated. A model for the collection efficiency in the diffusion-dominated regime and in the presence of positive or a negative Stefan flows is proposed. This collection efficiency model can then be used to augment the classic kernel of Smoluchowski such that its validity is extended to flow conditions prevalent in iron combustion.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136268"},"PeriodicalIF":6.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifunctional ceramic-reinforced nanocomposite hydrogel for thermal runaway propagation blocking and heat dissipation of lithium-ion battery modules","authors":"Gang Zhou ,&nbsp;Qi Huang ,&nbsp;Zhikai Wei ,&nbsp;Bingyu Guo ,&nbsp;Quanhong Hu ,&nbsp;Peng Zhang ,&nbsp;Huaheng Lu ,&nbsp;Qi Zhang","doi":"10.1016/j.fuel.2025.136257","DOIUrl":"10.1016/j.fuel.2025.136257","url":null,"abstract":"<div><div>As the energy density and capacity of lithium-ion batteries (LIBs) continues to increase, safety issues caused by thermal runaway propagation (TRP) have become one of the most significant threats to electric vehicles (EVs) and energy storage systems (ESS). Reducing the risk of TRP is important for the widespread use of LIBs. In this study, a novel hydrogel and glass fiber (GF) composite thermal insulator was fabricated using a skeletal structure optimization technique to inhibit TRP in LIB modules. Mechanical and thermal insulation test results show that by optimizing the formulation and structural design, the maximum compressive strength of the composite hydrogel is increased from 10.32 MPa to 36.32 MPa, and the material has a low thermal conductivity (0.03145 W·m⁻¹·K⁻¹) after dehydration, which can provide continuous thermal protection for the battery. In thermal stability tests, the material demonstrated excellent flame retardancy with a peak HRR release rate of 45.68 KW/m², a reduction of 51.17 % compared to when no HAP was added. The material is also environmentally friendly, with total CO and CO₂ emissions of only 0.39 g, or 2.67 % of total emissions. A study of TRP suppression behavior was carried out on a fully charged 18650-NCM811 battery pack (3 × 3 arrangement). The results showed that filling 4 mm composite hydrogel was able to extend 1442 s, 1319 s and 1405 s, with a maximum temperature difference between batteries averaging 510.4 °C, and drastically reduce the size of the TRP compared to the blank control group when the heat source was at the corner, side and center, respectively. In addition, the material exhibits excellent thermal management performance, with the maximum temperature of the hydrogel-cooled battery module at 3C discharge multiplier being only 62 °C, a 19.7 % reduction on the air convection-cooled battery module (77.2 °C). This study provides a cost-effective and environmentally friendly solution for TRP suppression in LIB modules.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136257"},"PeriodicalIF":6.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel aqueous synthesis of anion exchange membranes for fuel cells","authors":"Xia Liu ,&nbsp;Zhongshan Feng ,&nbsp;Cuiwen Deng ,&nbsp;Quan Yang ,&nbsp;Minhao Wang ,&nbsp;Xinjie Zhang ,&nbsp;Yi Hu ,&nbsp;Yufan Zheng ,&nbsp;Juan Zeng ,&nbsp;Bencai Lin ,&nbsp;Juanjuan Han","doi":"10.1016/j.fuel.2025.136328","DOIUrl":"10.1016/j.fuel.2025.136328","url":null,"abstract":"<div><div>This work reports an eco-friendly, economical, and straightforward fabrication of chitosan (CS)/poly(diallyldimethylammonium chloride) (PDDA) blended anion exchange membranes via an aqueous processing strategy, where CS dissolved in a KOH/urea/H₂O system forms the polymer matrix and PDDA acts as the hydroxide-ion conductor. Membranes are cast from solution and neutralized in KCl(aq) to form a gel film, followed by dehydration to form films. Robust hydrogen bond cross-linking facilitates lateral aggregation of chitosan chains, ensuring excellent component compatibility, low in-plane swelling (4.3–10.3 % at 80 °C), and favorable mechanical properties. The inherent hydrophilicity of CS and PDDA, imparts high through-plane swelling (45.0–150.1 % at 80 °C) and water uptake (142.5–327.2 % at 80 °C). High water uptake facilitates improved hydroxide conductivity (22.6–41.2 mS cm⁻¹ at 80 °C) and significantly enhances alkaline stability in hot KOH solutions (mass retention: 79.3–88.6 %; IEC retention: 70.6–73.9 %; conductivity retention: 76.8–86.1 %). The optimized PDDA@CS_7.0%-2 membrane achieves a peak power density of 180.0 mW cm⁻² at 325.2 mA cm⁻², demonstrating competitive performance among CS or PDDA-based AEMs.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136328"},"PeriodicalIF":6.7,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microfluidics study of free fall and forced gravity drainage in single- and multi-block fractured porous media: Implications on matrix-fracture interactions","authors":"Mohammad Amin Peymani,&nbsp;Mobeen Fatemi,&nbsp;Mohammad Hossein Ghazanfari","doi":"10.1016/j.fuel.2025.136267","DOIUrl":"10.1016/j.fuel.2025.136267","url":null,"abstract":"<div><div>Naturally fractured reservoirs are of significant importance in global oil production. One of the main production mechanisms from these reservoirs is gravity drainage. Previous researches have focused on understanding the effective factors on the oil recovery from blocks and the degree of capillary continuity (block to block interaction). However, the results from these studies have not been consistent in some cases and there are ambiguities in the influence of some of the effective parameters on the dynamic discharge of oil from the matrix block. The purpose of the present study is to comprehensively investigate the impact of the main affecting parameters on oil recovery from the fractured porous media with the implications on the degree of capillary continuity through analysis of the stability of the oil bridges, along with addressing the reason of reported inconsistencies in previous studies. With this aim microfluidics experiments on a realistic rock-based single-block and three-block systems are performed and different parameters including the tilt angle of the blocks, injection rate and aperture of the transverse fracture are investigated. In addition, the realistic approach of aging micromodels allowed to examine the effect of degree of oil-wetness on capillary continuity in different multi block systems, an aspect that had not been explored in previous studies. In the case of multi-block systems, the location, number and stability of the formed liquid bridges and the effect on capillary continuity were examined. It was found that oil recovery from single block decreases at higher tilt angles, while in multi-block systems different trends are observed based on the range of injection rate which is attributed to the number and stability of formed liquid bridges. It was also found that in multi-block systems the increase in injection rate can establish capillary continuity through forming liquid bridges. Furthermore, new analytical relationships are developed in the case of single block porous media under free fall gravity drainage, to predict the downward flow of the liquid level within the fracture and matrix. The findings of this study can be used for enhancing the performance of gas injection strategies in fractured systems.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136267"},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy-saving synergy in blast furnace ironmaking: multi-region regulation of silicon migration for fuel consumption and CO2 emissions reduction","authors":"Yijian Zhang ,&nbsp;Xiaoyue Fan ,&nbsp;Jianliang Zhang ,&nbsp;Yanxiang Liu ,&nbsp;Yuanhao Yu ,&nbsp;Chengde Yu ,&nbsp;Liyong Liu ,&nbsp;Yinghong Wang ,&nbsp;Lianyou Si ,&nbsp;Lina Xia","doi":"10.1016/j.fuel.2025.136321","DOIUrl":"10.1016/j.fuel.2025.136321","url":null,"abstract":"<div><div>Low-silicon smelting is a critical approach to achieving low-carbon and high-efficiency blast furnace ironmaking. However, its implementation still faces considerable technical challenges. In this study, the behavior of silicon across different zones of the blast furnace is systematically analyzed, and corresponding process optimization strategies are proposed and validated through industrial trials on a commercial blast furnace in China. The results show that increasing slag basicity reduces the activity of SiO₂, promoting the transfer of silicon from molten iron into the slag phase. A higher carbon content increases the activity coefficient of silicon, enhancing the reduction of SiO₂. In the tuyere zone, SiO₂ is initially reduced to gaseous SiO, which is subsequently reduced to silicon upon contact with molten iron. Lowering the theoretical combustion temperature at the tuyere effectively suppresses SiO₂ reduction. In addition, reducing the height of the dripping zone limits the reaction time for silicon generation. Industrial application of the proposed strategies led to a 0.08 wt% reduction in silicon content in hot metal, an 11.12 kg/t decrease in fuel rate, and an estimated reduction of 96,900 tons of CO₂ emissions annually. These findings provide an effective pathway for improving the sustainability and operational efficiency of blast furnace ironmaking.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136321"},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of NOx emission from a 600 MW coal-fired boiler with deep learning: Plant data learned by Gini index and lightweight convolutional neural network","authors":"Zhi Wang ,&nbsp;Delin Tao ,&nbsp;Haoyu Zhang ,&nbsp;Ziheng Hong ,&nbsp;Xiangyu Chen ,&nbsp;Yongbo Yin ,&nbsp;Chen Han ,&nbsp;Xianyong Peng ,&nbsp;Huaichun Zhou","doi":"10.1016/j.fuel.2025.136323","DOIUrl":"10.1016/j.fuel.2025.136323","url":null,"abstract":"<div><div>Selective catalytic reduction (SCR) is a key technology for controlling pollutant emissions from coal-fired boilers. Accurate prediction of nitrogen oxide emissions at the SCR inlet helps improve denitrification efficiency. However, traditional prediction models are unable to efficiently establish dynamic mapping relationships between nitrogen oxide emissions and combustion control variables. To improve the prediction accuracy of NOx emissions, this study adopts a Deformable Convolutional Neural Network for Multimodal (DFC-CNN) to build a dynamic model. DFC-CNN improves the model ability to extract hidden features by modulating the deformable receptive field. To extract the key variables, the Gini index was used to measure the importance of the variables. To evaluate the prediction capabilities of DFC-CNN, a simulation experiment was executed using real historical data from a 600 MW coal-fired boiler. Comparative experiments between Back Propagation (BP) and Long Short-Term Memory (LSTM) showed that the prediction accuracy of DFC-CNN under transient conditions significantly outperformed the traditional models (such as BP and LSTM). Compared to the baseline CNN, the expanded receptive field and introducing the modulation factor significantly improved the prediction performance of the DFC-CNN. The Root Mean Square Error (RMSE), Mean Absolute Error (MAE), and Mean Absolute Percentage Error (MAPE) were 12.077 mg/m³, 8.628 mg/m³, and 0.018, while the coefficient of determination (R²) was 0.973. Compared to Computational fluid dynamics (CFD) models, which require several days to predict a working condition, DFC-CNN models only need a few seconds. The DFC-CNN-based modeling method can meet the demands of industrial production and support cleaner combustion coal-fired boilers.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136323"},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"N-Octylaminopropan-2-ol surfactant for crude-oil asphaltene dispersion: Integrated experimental and modeling insights","authors":"Ulviyya J. Yolchuyeva ,&nbsp;Vagif M. Abbasov ,&nbsp;Orhan R. Abbasov ,&nbsp;Yusif Abdullayev ,&nbsp;Rena A. Jafarova ,&nbsp;Ayaz M. Mammadov ,&nbsp;Ravan A. Rahimov ,&nbsp;Gunay A. Hajiyeva ,&nbsp;Jochen Autschbach","doi":"10.1016/j.fuel.2025.136286","DOIUrl":"10.1016/j.fuel.2025.136286","url":null,"abstract":"<div><div>This study provides the first-reported evidence that aliphatic structured surfactant, N-octylaminopropan-2-ol (OSI), is a novel and effective inhibitor of the aggregation of acidic, island-structured crude oil asphaltenes (A-ZO). The molecular mechanisms of OSI’s effective dispersion were elucidated using a combination of advanced spectroscopic techniques and Density Functional Theory (DFT) calculations. Fourier Transform Infrared Spectroscopy (FT-IR) and Nuclear Magnetic Resonance (NMR) analyses revealed strong interactions between OSI and A-ZO, including hydrogen bonding and acid-base interactions, which prevent asphaltene precipitation in crude oil. Differential Thermal Analysis (DTA) confirmed the chemisorption of 12.5 % OSI onto A-ZO. Dynamic Light Scattering (DLS) measurements showed a significant reduction in the average nanosize of A-ZO in hexane, decreasing from 583 nm to 76 nm after treatment with OSI. Scanning Electron Microscopy (SEM) images of the A-ZO and OSI mixture revealed the filling of deep grooves and cracks on the rough surface of the asphaltene agglomerates, demonstrating the resin-like dispersion effect of OSI. DFT simulation reveals a binding energy of −28.2 kcal/mol for A-ZO and OSI complex formation. Noncovalent interaction (NCI) analysis shows that van der Waals interactions occur [sign(λ₂)ρ ≈ −0.015 to +0.005 au] in a large region between the OSI saturated tail and the A-ZO polycyclic aromatic fragment, which explains experimentally observed well-disperssed state of the hexane + A-ZO mixture after the addition a certain amount of OSI. The detailed, data-driven analysis offers unique molecular-level insights into asphaltene stabilization, presenting OSI as a significant alternative to traditional inhibitors for the oil industry.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136286"},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Warm-mix rejuvenation effects of waste polyethylene wax and rejuvenator blends on aged asphalt binder","authors":"Feng Ma ,&nbsp;Ruizhe Huang ,&nbsp;Ke Shi ,&nbsp;Zhen Fu ,&nbsp;Yanxin Jin","doi":"10.1016/j.fuel.2025.136288","DOIUrl":"10.1016/j.fuel.2025.136288","url":null,"abstract":"<div><div>This study developed a warm-mix rejuvenated additive (PRA) by blending equal parts of original and recycled polyethylene wax with 6 % rejuvenator, and incorporated varying dosages of PRA into different ratios of virgin and aged Styrene–Butadiene–Styrene (SBS) modified asphalt binders (ASAB). The resulting warm-mix rejuvenated SBS-modified asphalt binders were evaluated in terms of high-temperature rheology, fatigue property, low-temperature performance and microscopic characterization. High-temperature rheological showed that A40P2 (40 % ASAB + 2 % PRA) achieved a 37.8 % increase in complex modulus at 40 °C and a 35.4 % reduction in non-recoverable creep compliance, while creep recovery rate improved by 16.5 %, indicating enhanced rutting resistance and elasticity. Fatigue analysis revealed that 2 % PRA extended fatigue life by up to 42 % at 5 % strain, and 30 % ASAB content achieved optimal fatigue resistance. Low-temperature performance showed that increasing PRA and ASAB elevated stiffness and reduced integrated creep compliance, with A30P2 providing the best performance between low-temperature flexibility and stiffness. Microscopic characterization revealed that physical blending dominated at low PRA content, while chemical reactions such as esterification occurred at higher contents, as evidenced by weakened carbonyl groups and ether bonds. These reactions promoted molecular reorganization and enhanced the structural uniformity and thermal stability of the binder. This study offers a sustainable solution for enhancing the performance of rejuvenated asphalt binders, supporting the broader application of warm-mix rejuvenating technologies in practical pavement engineering.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"404 ","pages":"Article 136288"},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}