During long-term service, asphalt materials are prone to age under effects of oxidation and loading, which leads to continuous degradation of their performance. Conventional anti-aging technologies available fail to restore the properties of aged asphalt and achieve dynamic repair of asphalt aging degree. In this work, carbon black microcapsules encapsulating waste edible oil as the core material were prepared, and the release behavior of the core material was regulated by microwave energy density to evaluate its performance recovery effect on aged asphalt. Variation patterns in the performance recovery of aged asphalt containing carbon black microcapsules under different microwave time or power were systematically investigated through adhesion performance, rheological analysis, microstructural characterization and entropy-weight-based comprehensive evaluation. Finally, the applicability of carbon black microcapsules was verified based on changes in the performance of the asphalt mixture. The results indicate that the aging degree of the asphalt samples can be adjusted based on changes of microwave parameters. With increasing energy input, the comprehensive recovery index increases significantly, and the performance of aged asphalt gradually approaches that of unaged asphalt. Notably, the comprehensive recovery index reaches 72.84% at an energy density of 130.42 J/cm3. This method can also help recover asphalt mixture's performance. This work reveals a recovery mechanism involving "energy density-core material release-component reconstruction", providing a theoretical basis and technical support for the transition of asphalt materials from passive protection to active recovery.
Smart conductive cement-based materials (CNT@WGP-CSA) were prepared to investigate the hydration process and early-age strength development of calcium sulfoaluminate cement. Electrical resistivity was employed as a direct and non-destructive indicator to characterize hydration evolution and identify distinct hydration stages. This strategy elucidated the correlation among the electrical characteristics of the hydration process, the formation of hydration products, and the evolution of mechanical strength. was assessed by monitoring resistivity variations and chemical composition changes in the cement slurry. These results indicated that the resistivity evolution of CSA closely corresponds to five distinct hydration stages. Peaks in the resistivity derivative were linked to the crystallization of ettringite (AFt), aluminum hydroxide gel (AH3) and C-A-S-H gel. Furthermore, an XGBoost-based machine learning model was developed to quantitatively predict early-age compressive strength by integrating electrical resistivity, hydration time, and phase composition. The results demonstrate that incorporating resistivityrelated features significantly improves prediction accuracy and enables rapid assessment of early strength development. This approach provides a practical and data-driven framework for real-time hydration monitoring and strength prediction, highlighting the novel application potential of machine learning combined with electrical sensing in smart CSA cement-based materials.
The asphalt-aggregate interface is a critical yet vulnerable component controlling the durability and service performance of asphalt pavements. With the increasing use of modified asphalt, functional additives, recycled or artificial aggregates, and more severe environmental exposure, interfacial structure and failure behavior have become more complex. A clear understanding of cohesive failure within asphalt, adhesive failure at the asphalt-aggregate boundary, and their transition is therefore essential for explaining moisture-induced interfacial failure and developing reliable evaluation systems. This review systematically summarizes the multifaceted features of asphalt-aggregate interface behavior and classifies current characterization techniques from the perspectives of interfacial failure, thermodynamic energy, microphase behavior, and other physicochemical indicators. The principles, indicators, applicable failure types, advantages, and limitations of representative methods under dry and moisture-conditioned states are critically discussed across different observation scales and testing conditions. Particular attention is given to how asphalt-aggregate material characteristics and service environments drive transitions between cohesive and adhesive failure. The review indicates that future studies should further integrate different evaluation techniques and laboratory indicators to establish a laboratory evaluation system more closely correlated with field pavement failure patterns. Quantitative criteria for distinguishing cohesive and adhesive failure should also be refined to improve the reliability of interfacial behavior evaluation.
To address the brittleness of epoxy resin (EP) caused by high crosslinking density, the modification of epoxy resin with flexible rubber segments was proposed in this work. Bisphenol A-type epoxy resin (E51) was reacted with isocyanate-terminated groups via an addition reaction to prepare a prepolymer (E51-TDI). Subsequently, E51-TDI was grafted with hydroxyl-terminated fluororubber (HTFR) to synthesize a high-toughness fluorinated epoxy resin (E51-TDI-HTFR) with side chains. A mixture of E51-TDI-HTFR and curing agent (D230) was used to fabricate the coating. The chemical structure of the modified epoxy resin and the thermal, hydrophobic, mechanical, and cavitation erosion resistance of the coatings were investigated. When the HTFR concentration was 25
Waterborne polyurethane (WPU) modified emulsified asphalt (EA) can significantly enhance adhesion performance of EA. However, the mechanism by which WPU enhances the adhesion performance of EA lacks multi-scale characterization and remains unclear. Multi-scale tests were employed for characterization from macro, micro, energy, and molecular dynamics simulation perspectives, to investigate the adhesion performance and enhancement mechanism of waterborne polyurethane modified emulsified asphalt (WP-MEA) in this work. Adhesion strength and spalling resistance test was performed to evaluate the macro adhesion performance of WP-MEA with different types of aggregates. Atomic force microscopy (AFM) was adopted to characterize the multi-scale structural features and micro adhesion performance. Surface free energy (SFE) was used to analyze the mechanisms underlying cohesive and adhesive failure, from an energy perspective. Molecular dynamics simulations were employed to characterize interaction at adhesive interface. The results indicate that WPU can significantly enhance the water damage resistance of WP-MEA, accompanied by favorable spalling resistance, when the WPU dosage is 8%. WP-MEA demonstrates the optimal macro adhesion strength and spalling resistance when combined with limestone, among the three different aggregates. This is attributed to the mechanical interlocking structure and significantly enhanced interfacial van der Waals forces. The incorporation of WPU increases the three-dimensional roughness of WP-MEA, thereby enhancing the wettability at the aggregate-asphalt interface and increasing the micro adhesion performance. The addition of WPU increases the alkaline content of WP-MEA, thereby the adhesion strength of WP-MEA with aggregates was enhanced. Multi-scale analysis of adhesion performance and mechanism not only establishes a system theoretical foundation for enhancing the adhesion performance of WP-MEA but also promotes its practical application in high-performance and low-carbon road engineering.
During asphalt binder heating and paving, volatile organic compounds (VOCs) emissions unavoidably pose significant threats to human health and environment. This study investigated the feasibility of utilizing thermally modified attapulgite (TMA) as a green adsorption additive to mitigate VOCs emissions in SBS modified asphalt binder. TG experiments identified critical heat modification temperatures (110 degrees C, 250 degrees C, 520 degrees C, and 690 degrees C) for attapulgite (ATP) to regulate its physicochemical properties. Structural evolution and surface characteristics were systematically analyzed via XRD, FTIR, BET and Zeta potential techniques, while GC-MS was employed to evaluate VOCs emission behavior of ATP-SBS composite modified asphalt binder under heating conditions. Results show ATP modified at 520 degrees C (TMA520) achieved the highest VOCs reduction efficiency of 52.7%, attributed to retained surface structure and optimized pores. Furthermore, TMA520 significantly enhanced the high temperature performance of SBS modified asphalt binder. Although interaction with binder is physical, TMA520's high zeta potential ensures uniform dispersion and provides strong electrostatic adsorption for VOCs. Its hierarchical pore structure is crucial: macropores/mesopores capture and transport VOCs, while micropores immobilize them. This work demonstrates an effective approach for utilizing eco-functional minerals in binder, promoting cleaner pavement construction, particularly in ecologically sensitive regions.
Epoxy resin has excellent adhesion, mechanical strength, environmental adaptability and corrosion resistance. As a concrete coating, it can effectively seal internal pores, prevent the penetration of water and corrosive ions. However, the epoxy resin has a relatively high content of hydrophilic groups and lacks an effective physical barrier structure. In this work, KH570-ZrO2 nanoparticles were synthesized by modifying zirconium oxide (ZrO2) with 3-Methacryloxypropyltrimethoxysilane (KH570) and then mixed with epoxy resin to prepare epoxy coatings. The thermal properties, mechanical properties, hydrophobicity and corrosion resistance of the coatings were studied respectively. The results indicated that when the content of ZrO2 particles was 3.0 wt% of the epoxy resin, the modified epoxy coating demonstrated the most notable enhancements in both thermal and mechanical properties. Moreover, it exhibited optimal hydrophobicity and corrosion resistance. The KH570-ZrO2 nanoparticles constructed a micro-nano composite rough structure. Meanwhile, low surface energy organosilane segments were introduced. These two factors jointly decreased the contact. In addition, KH570-ZrO2 particles are uniformly dispersed in the cross linked network. Through the “maze effect”, they extend the diffusion paths of environmental moisture, oxygen, and various ions, thereby effectively inhibiting the penetration of these media into the concrete matrix. Overall, this work successfully improved the mechanical, hydrophobic and corrosion resistant properties, offering an effective technique for enhancing the durability of protective coatings.
This study investigates the microwave-healing behavior of iron tailings asphalt mixture (ITAM) to support sustainable pavement engineering, focusing on macro- and meso-scale performance evolution under damage-healing cycles. The physicochemical properties of iron tailings were characterized, and microwave heating, multi-cycle damage-healing tests, and road performance evaluations were conducted to identify the optimal replacement ratio. CT combined with seepage simulations quantified meso-structural changes in fissures, void connectivity, and flow behavior during damage and microwave healing. Results indicate that ITAM exhibits enhanced microwave heating efficiency, reaching temperatures up to 109.4 degrees C, where the higher heating rate favors rapid crack repair in asphalt mixtures, and achieving a peak load recovery of 75.68 % in the first healing cycle, indicating substantial mechanical restoration. Freeze-thaw cycling significantly increased void connectivity and average void volume, whereas microwave heating partially restored the mesostructure by reducing connected voids, void volume, and flow channel length.
The deterioration of pore structure caused by sulphate attack is a key factor contributing to the performance degradation of cement composites. The incorporation of ground granulated blast furnace slag (GGBS) and nano-silica (NS) is expected to promote to pore structure reconstruction in this work. And the attack resistance of GGBS and NS modified cement paste under dry-wet cycles in sulphate or tap water was evaluated through mechanical property tests. Additionally, X-ray computed tomography (XCT) scanning technology was used to investigate the impact of sulphate attack, GGBS, and NS on the pore structure evolution of cement paste. The results show that the sulphate attack environment can induce changes in the mechanical and attack resistance properties of paste by altering pore size distribution and pore morphology, while the deterioration characteristics under water exposure are relatively mild compared with sulphate attack. The incorporation of GGBS and NS significantly enhanced the attack resistance of the cement paste. After 150 sulphate cycles, the cement composite containing 5% GGBS and 3% NS maintained a compressive strength of 67.9 MPa, a flexural strength increase of 6.3%, and a sulphate resistance coefficient of 1.07. XCT analysis revealed a 30.3% reduction in porosity and effectively suppressed the growth of large pores (>1 mm(3)), maintaining 89.1% of spherical pores. Moreover, a three-stage attack mechanism based on the dynamic evolution of pore structure was established. On balance, the incorporation of 5% GGBS and 3% NS is an effective approach to enhance the densification and sulphate resistance of cement composites.
Conventional geopolymer coatings are prone to water infiltration due to their inherent hydrophilicity, and single modification approach often cannot simultaneously provide satisfactory hydrophobicity and bonding properties. In this work, hydrophobic geopolymer coatings were prepared using ground granulated blast furnace slag (GGBS) and fly ash (FA) as precursors, with hexadecyltrimethoxysilane (HDTMS) and nano-SiO2 as composite modifiers. Response surface optimization produced a reliable quadratic model with an R2 value of 0.9842. Compared with the unmodified coating, the composite-modified coating increased the water contact angle from 56.5 degrees to 132.5 degrees (134.5%) and reduced the 7-d water absorption from 2.32% to 0.73% (68.5%), while maintaining a bonding strength of 3.88 MPa. After mechanical and chemical durability tests, the water contact angle and bonding strength remained above 110 degrees and 3.30 MPa, respectively, with the latter exceeding the minimum adhesion requirement of 1.5 MPa specified in JTG/T 3310-2019. Nano-SiO2 promoted secondary geopolymerization and matrix densification, compensating for the adverse effect of HDTMS on bonding, whereas HDTMS reduced the surface energy by introducing long-chain hydrophobic groups. This composite-modification strategy provides a feasible approach for preparing geopolymer protective coatings with excellent hydrophobicity, reliable bonding performance, and good engineering applicability.
The combination of microwave heating and the excellent microwave absorption properties of steel slag (SS) is an effective self-healing technique for asphalt pavements. However, freeze-thaw-induced micro-void evolution creates a thermal barrier that impedes heat transfer from steel slag to asphalt mortar in cold climates. To elucidate how SS content and void evolution affect heat transfer, Marshall specimens, replacing 4.75–9.5 mm limestone with SS, were subjected to freeze-thaw cycles. Utilizing microwave testing, electromagnetic measurements, CT scans, and COMSOL Multiphysics simulations, this work quantitatively characterized heat transfer degradation caused by void changes and air layer thickness. Results show that increasing SS content partially reduced the sensitivity of effective thermal conductivity to freeze–thaw-induced porosity growth, with the initial degradation slope of SS-75 being 3.03% lower than that of SS-25. Phase-resolved energy analysis showed that the proportion of electromagnetic work retained as internal energy in the steel slag phase increased from 35.0% to 46.27% as the steel slag content increased from 25% to 75%. With increasing freeze–thaw-induced porosity, the heat acquired by the porous asphalt mortar decreased, suggesting that the low-thermal-conductivity air phase increases the equivalent thermal resistance along the heat-transfer pathway from steel slag to asphalt mortar and enhances phase-level heat retention within the mineral phases. To distinguish effective heat transfer from the asymptotically diminishing temperature response with increasing air-layer thickness, a receiving-surface temperature of 25°C after 120 s was adopted as an operational cutoff. Based on this criterion, the model-based effective heat-transfer boundaries were 0.99 mm, 1.22 mm, and 1.36 mm for SS-25, SS-50, and SS-75, respectively. These results provide model-based references for evaluating the heat-transfer tolerance of microwave self-healing pavement materials in cold regions.
Cement-based materials are susceptible to moisture and corrosive media, leading to durability decrement during their service. To enhance water resistance, hydrophobic modification method is usually adopted, but it can decrease their mechanical properties. Composite modification method using lauric acid (LA) as hydrophobic agent and cellulose nanofibers (CNF) for mechanical improvement was put forward in this work. First, optimal LA dosage in cement-based materials was obtained to modify their hydrophobicity. Then, effects of different CNF contents on mechanical properties were investigated. Finally, comprehensive characterizations were conducted, such as contact angle, water absorption, chloride resistance, hydration heat, microstructures, and chemical compositions. Results show that the LA/CNF modified cement-based materials possess contact angle of 124 degrees, indicating that the hydrophobicity and impermeability are significantly enhanced. Meanwhile, the strength loss induced by LA can be compensated for by the incorporation of CNF. The compressive and flexural properties of cement-based materials with CNF at 90 d curing ages are increased by 22.92% and 34.31%, respectively, in contrast to those of the materials with LA. Hydrophobic property enhancement is mainly attributed to LA addition, while CNF can make cement-based materials mechanical reinforcement through nanoscale properties and bridging effects, thereby decreasing cement hydration inhibition of LA. This work can provide composite modification technique for cement-based materials with superior hydrophobic and mechanical properties.
To elucidate the mechanistic role of aging in modulating asphalt adhesion properties, four types of asphalt binder were designed and tested following two anti-aging pathways, compositional adjustment and polymer modification. Firstly, DSR was employed to characterize rheological behavior, and the activation energy was calculated based on viscosity. Then, the functional group characteristics were analyzed by FTIR, and the impact of aging was evaluated based on physical and chemical indicators. Finally, photoelectric colorimetry and surface free energy (SFE) were employed to analyze the impact of aging on adhesion. The findings show that SBS increases complex modulus, rutting factor, viscosity, activation energy (Ea), whereas the phase angle decreased. High-temperature stability and anti-aging properties: SBS-R > SBS-L > Base-90 > Base-70. The higher the aging level, the higher Ea. SBS slows down the aging and the reduction in light components. As the base asphalt underwent aging, the colloid exhibited a sol-to-gel transformation, the cohesive work peaked. The cohesive and adhesion work of SBS asphalt decrease with aging, and both decreased significantly in an aqueous environment. The adhesion ratio (Ad) and the energy ratio (ER) of asphalt decline with aging. The action of aging on adhesion is affected by the light fractions. The more light-components and the denser the SBS structure, the stronger its anti-aging and adhesion performance. The findings are expected to provide a fundamental basis for developing more durable, aging-resistant asphalt materials.
The problems of easy cracking, high brittleness, and low bond strength of ordinary Portland cement and sulphoaluminate cement (OPC-SAC) composites limit their application as rapid repair materials. In this study, glass fibers (GFs) were added to OPC-SAC composites with the content of 0.0–1.5% to improve their properties. Fluidity, mechanical properties, bond properties, and drying shrinkage properties were researched, and their microstructure was characterized by SEM and ICT. Hydration products at different curing ages were studied by XRD and FTIR. The results showed that GFs improved the mechanical properties of OPC-SAC composites. The 28 d flexural strength, compressive strength, and bond strength of specimens with 0.5% GFs reached maximum values, increasing by 22.1%, 12.1%, and 82.9%, respectively, compared with the control group without GFs.. GFs significantly inhibited the drying shrinkage of composites, and the inhibitory effect was magnified with the content of GFs. Adding 0.5% of GFs could reduce the porosity of specimens, decrease the volume proportion of pores (>10 mm3), and refine the pore structure. In summary, 0.5% is recommended as the optimal content of GFs to be added into the OPC-SAC composites.
Cement emulsified asphalt mastic (CEAM) is becoming increasingly prominent in promoting low-carbon construction in road engineering, yet the adhesion of CEAM to aggregates is unsatisfactory enough. In this work, calcium carbide slag (CCS) was adopted to replace cement in composite filler-modified emulsified asphalt mastic (CMEAM) for improving the adhesion of CEAM to aggregates. The adhesion properties of CMEAM were analyzed across macro, micro, and nano scales, with their correlations examined. The environmental and economic benefits were also quantified. Results show that CCS improves CEAM’s adhesion and water damage resistance to aggregates across multiple scales. This is attributed to: the rough surface of CCS forming a physical interlock with asphalt; CCS promotes cement hydration, producing rougher and denser hydrated products that embed effectively with asphalt; and the strong alkalinity of CCS reduces the polarity difference between CMEAM and aggregates. It is noteworthy that excessive CCS disrupts the uniform distribution of fillers in CMEAM and thereby reduces the adhesion, but it positively affects CEAM’s self-healing and elastic recovery properties. Moreover, macro-scale bonding strength effectively correlates with cross-scale adhesion properties, as shown by Pearson correlation coefficient (R) ranging from 0.386 to 0.981. This work provides a novel way to improve the durability of cold-paving asphalt pavement and expand the resource utilization of CCS, which can promote low-carbon and sustainable road engineering.
Waterborne epoxy coatings exhibit limitations in hydrophobicity and bonding in concrete surface, restricting their effectiveness in concrete protection. This work investigated ways to improve the bonding and hydrophobic properties of waterborne epoxy resin (WER) coatings through multicomponent synergistic modification. Nano-polytetrafluoroethylene (PTFE) and cement, as bonding modifiers, were adopted to partially replace the fillers, while 2-(Perfluorohexyl)ethyl methacrylate (C6F) was designed as a hydrophobic modifier for the curing agent. The hydrophobicity, bonding and corrosion resistance of concrete coatings were evaluated by contact angle, bonding strength, and foaming time. Results show that the hydrophobicity of the coatings was significantly improved by the C6F-modified curing agent, with the contact angle increasing from 34.5 degrees to 81.5 degrees. Nano-protruding structures were formed on the coating surface by PTFE, and the hydrophobicity was further enhanced, with the contact angle reaching 113 degrees. Physical crosslinking between cement and WER was observed, and the bonding properties of the coating were significantly enhanced, with the bonding strength reaching 6.28 MPa at a cement dosage of 40 %. The bonding strength of the epoxy coating, synergistically modified with cement, modified curing agent, and PTFE, reached 6.72 MPa, with a contact angle of 95.5 degrees, and the coating demonstrates excellent corrosion and abrasion resistance. The development of concrete coatings with high bonding and hydrophobic properties provides an efficient and environmentally friendly protective material for water conservancy and hydropower concrete applications.
The efficient disposal and utilization of waste tires have become a key issue of concern in related fields. This study is focused on improving the use efficiency of crumb rubber (CR) in asphalt while analyzing the impact of increased CR content on asphalt performance. Difference scanning calorimetric analysis (DSC), Gel permeation chromatography (GPC), Rheological tests (temperature scanning and linear amplitude scanning), Pull-off adhesion test, surface energy adhesion test and Atomic force microscope (AFM) nano-morphology test were conducted on rubberized asphalt. The results show that the incorporation of CR can change the phase transition temperature (Max temperature is 10.12 degrees C) and molecular weight of the asphalt system (The proportion of macromolecular size increased by 2.15 %). CR contributes to improving the high-temperature and anti-fatigue performance. Compared with virgin asphalt, the fatigue life of rubberized asphalt can be increased by more than 33 times at most. The tensile strength of asphalt is impacted more by the CR content than by the adhesive force of surface energy, and it is unfavorable to the adhesion performance. The addition of CR can greatly affect the nano-morphology of rubberized asphalt and enhance its roughness. This work has certain guiding significance for the CR reuse in asphalt and the development of sustainable pavement.
Superhydrophobic coatings have garnered significant attention due to their potential applications across various fields. However, their mechanical instability has limited their widespread practical application. Therefore, a durable superhydrophobic coating that is both wear-resistant and possesses high mechanical robustness is particularly important for practical applications in various industrial and construction settings. In this work, a novel superhydrophobic coating was prepared, with polydimethylsiloxane (PDMS) as the matrix and micro-scale quartz particles loaded with hydrophobic nanoscale silica (SiO2) as the filler. Mechanical robustness and weather resistance of the coating were comprehensively evaluated through sandpaper abrasion, tape-peeling, acid-base salt corrosion. Results show that the prepared coating has a water contact angle of 158° and retains superhydrophobicity even after 100 cycles of abrasion. The coating exhibits superior wear resistance, mechanical robustness, and weather resistance due to the combination of PDMS and the hierarchical structure of quartz@SiO2, which prevents unnecessary cleavage of the matrix resin and maintains superhydrophobic properties even when flaking occurs. This work provides a low-cost, scalable fabrication strategy to overcome the mechanical limitation of superhydrophobic coatings, offering new insights for designing durable functional surfaces. The straightforward and cost-effective preparation process makes this coating a promising candidate for large-scale production and practical applications in waterproofing, anti-pollution.
Epoxy resin (EP) has low toughness and poor impact resistance due to its high crosslinking density and strong internal stress, which limits its application in building structures. A modified type of alicyclic amine curing agent was synthesized by reaction between poly (oxy-1,2-ethanediyl), alpha-methyl-omega-(2-propenyloxy) -(PEG-VP) and 4,4 '-methylenebis(2-methylcyclohexylamine) (DMDC). This modified curing agent can simultaneously enhance the toughness and hydrophobicity of the coatings. It was then mixed with epoxy resin to prepare epoxy coatings. Results show that the modified epoxy coatings have optimal hydrophobicity and toughness when the ratio of PEG-VP to DMDC is 0.2:1. The glass transition temperature (Tg) of the coating decreased from 128.61 f 2.00 degrees C (unmodified) to 104.63 f 2.00 degrees C, showing a moderate reduction in thermal stability. Compared with the unmodified epoxy coating (8 d water absorption of 1.74 f 0.20 % and contact angle of 36.2 f 2.0 degrees), the modified coating demonstrated reduced water absorption (1.08 f 0.20 %) and an increased contact angle of 91.9 f 2.0 degrees. Furthermore, compared with the unmodified epoxy coating (elongation at break of 22.43 f 5.00 % and impact strength of 14.42 f 3.00 kJ/m2), the modified coating's elongation at break increased by approximately 400 % (reaching 100.74 f 10.00 %) and impact strength rose to 23.33 f 2.00 kJ/m2. The fracture surface of the modified epoxy coating forms a rough network structure with branching cracks, confirming that the energy dissipation mechanism during crack propagation is a critical factor for the enhancement of toughness. Overall, this work successfully improves hydrophobicity and toughness of coatings while maintaining acceptable thermal stability, providing theoretical insights and technical support for developing high-performance epoxy coatings.
This study presents a systematic review of fatigue analysis methodologies and failure criteria for asphalt binders and mixtures employed in various cyclic fatigue testing configurations. The investigation focuses on two principal predictive approaches: phenomenological models and mechanistic frameworks, which are commonly utilized to forecast asphalt pavement fatigue life based on experimental data from different fatigue tests. A critical evaluation is conducted on the diverse failure criteria integrated within these analytical approaches, with particular emphasis on their respective merits and limitations. The current research findings reveal a notable absence of consensus regarding the precise definition of the fatigue failure criteria for asphalt materials. Furthermore, critical parameters including accuracy assessment, reliability verification, and sensitivity analysis of these failure criteria are identified as requiring enhanced research attention. This review recommends specific fatigue failure criteria classified according to fatigue testing methods and material types. This comprehensive analysis of fatigue failure mechanisms in asphalt composites aims to inform strategic refinements for future research trajectories and enhance durability-oriented pavement design practices.