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    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
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    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>The interaction mechanism of activated crumb rubber modified asphalt during the preparation process</title>
      <link>https://trid.trb.org/View/2643557</link>
      <description><![CDATA[Rubber activation is an effective method for achieving high crumb rubber (CR) content applications, which has the advantages of energy saving, environmental protection, and reduce carbon footprint. However, the interaction mechanism between high-content activated crumb rubber (ACR) and asphalt is unclear, which limits the improvement of ACR-modified asphalt (ACRMA) performance. This study conducted phase separation tests on 30% ACRMA during the mixing, shearing, and curing stages and the the performance of the rubber and asphalt phases were evaluated. The results showed that after electromagnetic thermal activation, ACR achieved desulfurisation. As the reaction proceeds, the fluffiness of the rubber phase of ACR increases, and the surface chemical structure and micro-structure became more stable. CR underwent desulfurisation during the preparation stage, and the reaction process with asphalt was uncontrollable. Meanwhile, the dispersion uniformity of ACR in the asphalt phase was enhanced, and the effective contact area between ACR and asphalt was increased. The improvement contributed to the swelling of ACR in asphalt and targeted improvement of ACRMA performance. However, the overall distribution of CR in the asphalt phase was not uniform, with many unswollen CR. The clarification of the reaction mechanism of high-content ACRMA provided a theoretical basis for its application.]]></description>
      <pubDate>Sat, 17 Jan 2026 16:40:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/2643557</guid>
    </item>
    <item>
      <title>Study on the Effect of Lanthanum Stearate on the Compatibility of Desulfurized Rubber with Bitumen Based on Molecular Dynamics Simulation</title>
      <link>https://trid.trb.org/View/2633000</link>
      <description><![CDATA[Compatibility between bitumen and desulfurized rubber (DR) is the most challenging issue affecting the performance of DR-modified bitumen. The aim of this study was to investigate the effects of temperature, DR dosage, and lanthanum stearate (third component) dosage on the compatibility of DR with bitumen by molecular dynamics (MD) simulations. In this paper, the physical properties of DR–lanthanum stearate composite-modified bitumen were firstly tested, and the effects of temperature, DR dosage, and lanthanum stearate dosage on the compatibility of bitumen with DR were analyzed. Molecular models of matrix bitumen, DR molecules, and composite-modified bitumen were then constructed in Materials Studio (MS) software. The effects of temperature, DR dosage, and lanthanum stearate dosage on the compatibility of DR with bitumen were analyzed by calculating the solubility parameter (d), the interaction energy, and the mean square displacement (MSD) based on a rational model. Finally, the simulation results were compared with those of scanning electron microscopy (SEM). The simulation results showed that the optimal compatibility between DR and bitumen was achieved when the temperature was 135°C, the DR dosage was 30%, and the lanthanum stearate dosage was 1.5%, when the difference in the solubility parameters between DR and bitumen was the smallest, and the interaction energy between them was the largest. Also, lanthanum stearate had a significant effect on the MSD of each bitumen fraction. All these changes in the bitumen molecule indicate that lanthanum stearate plays an active role in improving the compatibility of DR with bitumen. The simulation results are consistent with the experimental results.]]></description>
      <pubDate>Thu, 04 Dec 2025 11:36:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/2633000</guid>
    </item>
    <item>
      <title>Aging Behavior of Desulfurized Rubber-Modified Asphalt: Evolution of Rheological Properties and Mechanistic Interpretation</title>
      <link>https://trid.trb.org/View/2582847</link>
      <description><![CDATA[The aging phenomenon of asphalt binder is a critical factor that observably affects pavement durability. Utilizing the desulfurization process to develop desulfurized rubber-modified asphalt (DRMA) has emerged as an effective method for improving the aging resistance of asphalt. This study systematically evaluated the rheological properties of rubber-modified asphalt (RMA) and DRMA, before and after both thermo-oxidative and pressure aging. The swelling behavior of crumb rubber (CR) and alterations in the chemical structure of asphalt binder were also detected to elucidate the aging mechanism. Both the deformation resistance and fatigue performance of RMA and DRMA were enhanced after thermo-oxidative aging, which is attributed to the swelling of undissolved rubber particles, reinforcing the internal network structure in asphalt binder. Conversely, pressure aging was characterized by rubber degradation, leading predominantly to the breakdown of the network structure, which in turn resulted in deteriorated rheological properties. When subjected to equivalent aging conditions, DRMA consistently demonstrated superior rheological performance compared to RMA. This superiority was primarily due to the improved compatibility of desulfurized rubber with asphalt, which facilitated the formation of a more uniform and robust internal network structure. Furthermore, the greater integration of carbon black and aging inhibitors into the asphalt from the desulfurized rubber further enhanced the resistance to aging.]]></description>
      <pubDate>Thu, 11 Sep 2025 09:24:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/2582847</guid>
    </item>
    <item>
      <title>Enhancing compatibility of crumb rubber in modified asphalt using green desulfurization for sustainable waste tire recycling</title>
      <link>https://trid.trb.org/View/2572590</link>
      <description><![CDATA[The practical application of crumb rubber (CR) modified asphalt is significantly constrained by phase separation phenomena arising from poor matrix compatibility. This study proposes an innovative deep eutectic solvent (DES)-assisted desulfurization strategy to enhance CR-asphalt interfacial compatibility, thereby advancing sustainable pavement materials and valorizing waste tire resources. Through controlled DES treatment, desulfurized crumb rubber (DCR) was synthesized with tailored molecular architecture. Comprehensive characterization through crosslink density analysis, Horikx plots interpretation, functional groups, and micro-structure coupled with energy-dispersive spectroscopy revealed two fundamental modification mechanisms: (1) selective cleavage of 51 % crosslinks in the rubber network, and (2) successful grafting of amide functionalities onto the DCR surface. These synergistic effects endowed DCR modified asphalt with exceptional performance characteristics, demonstrating 31 % enhanced ductility and 61 % improved storage stability (separation index reduction from 5.6°C to 2.2°C). The reduced crosslink density facilitates polymer chain mobility for better asphalt interpenetration, while the introduced amide groups establish strong interfacial interactions with acidic asphalt components through hydrogen bonding and covalent coupling. This dual-approach modification strategy provides a scalable pathway for developing high-performance modified asphalt with superior compatibility.]]></description>
      <pubDate>Mon, 08 Sep 2025 14:54:04 GMT</pubDate>
      <guid>https://trid.trb.org/View/2572590</guid>
    </item>
    <item>
      <title>Desulfurization degree characterization of crumb rubber pretreated with heavy bio-oil and its effect on asphalt binder rheological performances and storage stability</title>
      <link>https://trid.trb.org/View/2571222</link>
      <description><![CDATA[Desulfurization degree of crumb rubber has a significant effect on the crumb rubber-asphalt binder compatibility and also the asphalt binder rheological performances. In this study, the desulfurization degree of crumb rubber pretreated with heavy bio-oil was first quantitatively characterized. Then, the compatibility under different degree of desulfurization was evaluated using molecular dynamics simulation. In addition, rheological performance tests, including multiple stress creep and recovery (MSCR), bending beam rheometer test (BBR) and rotational viscosity test, and segregation test, were conducted. The results indicated that with the pretreatment of crumb rubber by castor oil and the increase of desulfurization degree, the high-temperature performance and viscosity was decreased, while the low-temperature performance was improved. However, the compatibility and storage stability showed a peak value with the increase of desulfurization degree. It can be concluded that there existed an appropriate range of desulfurization degree for compatibility and storage stability of rubberized asphalt.]]></description>
      <pubDate>Fri, 29 Aug 2025 10:03:44 GMT</pubDate>
      <guid>https://trid.trb.org/View/2571222</guid>
    </item>
    <item>
      <title>Secondary relaxation-driven self-healing optimization in desulfurized crumb rubber-modified asphalt</title>
      <link>https://trid.trb.org/View/2569250</link>
      <description><![CDATA[Crumb rubber-modified asphalt promotes the sustainable development of road materials by recycling waste tire rubber. However, its practical application is significantly hindered by the decline of the self-healing performance at high concentrations of waste tire rubber. Herein, a novel strategy for controlling secondary relaxation is proposed to enhance the self-healing performance of desulfurized crumb rubber (DCR) modified asphalt. Broadband dielectric spectroscopy revealed that the intensified secondary relaxation (β-relaxation) dominates the molecular motion of DCR, evidenced by the reduction in the activation energy (from 44.9 to 30.6 kJ/mol). And the activation energy of β-relaxation was positively correlated with crosslinking density (from 2.2 to 1.1 ×10−3 mol/cm3). In DCR-modified asphalt, degraded particles formed aggregated or dispersed “white spot” structures based on crosslink density and concentration. Low-crosslinking DCR (DCR3∼4) facilitated the formation of island-like morphologies by enhancing molecular mobility driven by β-relaxation, thereby improving both the viscous response and compatibility with the asphalt matrix. This resulted in high storage stability (softening point difference <2.5 ℃ at high DCR content), and enhanced 5 ℃ ductility. The rheological behavior of modified asphalt was also dominated by DCR molecular relaxation. For self-healing optimization, DCR with a low activation energy of 30.6 kJ/mol significantly enhanced system relaxation and interfacial adhesion, achieving 81.7 % healing efficiency within 6 h at high DCR concentration (40 wt%). The self-healing efficiency followed an exponential decay model with activation energy of DCR secondary relaxation (R2> 0.99), confirming secondary relaxation as the critical factor governing healing performance.]]></description>
      <pubDate>Fri, 25 Jul 2025 11:31:59 GMT</pubDate>
      <guid>https://trid.trb.org/View/2569250</guid>
    </item>
    <item>
      <title>Application of biological desulfurization technology in crumb rubber modified asphalt: Performance optimization and high-temperature emission suppression</title>
      <link>https://trid.trb.org/View/2566603</link>
      <description><![CDATA[The high viscosity of crumb rubber modified asphalt (CRMA) raises the temperature of construction mixing. This increases the harmful emissions in the paving process of asphalt construction, which limits its application in the road field to a certain extent. Therefore, in this paper, two microorganisms were utilized to conduct desulfurization treatment on crumb rubber (CR) to obtain bio-desulfurized crumb rubber (BCR). Upon this foundation, bio-desulfurized crumb rubber modified asphalts (BCRMA) were prepared. Firstly, the microscopic morphologies and chemical structures of BCR were characterized. After biological treatment, the number, area and porosity of the pores on the surface of BCR increased significantly. The pore size, sulfur element content and the crosslinking density decreased. Subsequently, the performance of BCRMA was studied. The low-temperature property and the compatibility of BCR with base asphalt (BA) were improved. The high-temperature property decreased, but the decrease was not significant. Finally, the concentration and types of volatile organic compounds (VOCs) and hydrogen sulfide (H₂S) at high temperatures were detected. After bio-desulfurization, the concentration of VOCs and H₂S in the modified asphalt flue gas were significantly reduced. The types of sulfur-containing organic compounds (SCs) were reduced by 50 %, which effectively inhibited harmful emissions to the environment and human health.]]></description>
      <pubDate>Fri, 25 Jul 2025 11:31:59 GMT</pubDate>
      <guid>https://trid.trb.org/View/2566603</guid>
    </item>
    <item>
      <title>Effects of biological desulfurization on storage stability of crumb rubber modified asphalt: Experimental analysis and molecular simulation</title>
      <link>https://trid.trb.org/View/2552648</link>
      <description><![CDATA[The service performance of crumb rubber modified asphalt pavement will be negatively affected by the poor storage stability of crumb rubber modified asphalt (CRMA). Therefore, in this study, bio-desulfurized crumb rubber (BCR) was procured via the desulfurization effect of two types of microorganisms, after which bio-desulfurized crumb rubber modified asphalt (BCRMA) was fabricated. Meanwhile, a combined approach integrating macroscopic experiments and molecular dynamics (MD) simulation was utilized to investigate the storage stability of BCRMA. First and foremost, an organic element analyzer (EA) and a Fourier Transform Infrared Spectrometer (FTIR) were utilized to characterize the desulfurization state of crumb rubber (CR) subjected to different bio-desulfurization durations. Based on these findings, research on how bio-desulfurization treatment affects the storage stability of CRMA was conducted. Subsequently, CRMA models with varying degrees of desulfurization were established. The compatibility between BCR and base asphalt (BA) was then analyzed using parameters such as solubility parameters, mean squared displacement (MSD), diffusion coefficient (DC), free fraction volume (FFV), and glass transition temperature (Tg). This was done to further evaluate the storage stability of BCRMA. The results indicate that the bio-desulfurization treatment has a notable effect on boosting the storage stability of CRMA. Specifically, the segregation softening point differences of the modified asphalts subjected to bio-desulfurization for 7 days and 14 days are decreased by 29.1 % and 41.8 %, respectively. The molecular simulation results further validate this conclusion. In comparison with the non-desulfurized CR, the structural units of BCR and BA exhibit a smaller difference in interaction energy. Moreover, FFV and DC demonstrate that the diffusion capacity of BCR within BA is augmented, and its interaction with each component in the asphalt is strengthened as well. This situation is more favorable for the mutual dissolution of the two substances, thus strengthening the storage stability of BCRMA accordingly.]]></description>
      <pubDate>Fri, 20 Jun 2025 11:58:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/2552648</guid>
    </item>
    <item>
      <title>Effect of Dynamic Disulfide Bonds on Microstructure, Storage Stability, and Self-Healing Performance of Desulfurized Waste Crumb Rubber–Modified Asphalt</title>
      <link>https://trid.trb.org/View/2526273</link>
      <description><![CDATA[Endowing waste crumb rubber–modified asphalt (CRMA) with superior self-healing capability can extend the service life of asphalt pavement. In this study, 3,3’-dithiodipropionic acid (DPA) with dynamic disulfide bonds was introduced into waste crumb rubber particles through esterification reaction to prepare a novel self-healing crumb rubber–modified asphalt (DPA/CRMA). Fourier-transform infrared spectroscopy results revealed that the dynamic disulfide bonds were successfully connected between crumb rubber particles in DPA/CRMA. With the increase of DPA dosage, the softening point and ductility of DPA/CRMA were gradually increased. The fluorescence microscope images indicated that DPA/CRMA had better dispersibility compared to CRMA. The results of the segregation test showed that the dynamic disulfide bonds in DPA significantly enhanced the storage stability of DPA/CRMA. The results of healing tests showed that DPA improved the self-healing properties of the waste CRMA. The fatigue–healing index and fracture healing rate of DPA/CRMA increased to 96.2 and 69.8%, while those of CRMA were only 67.5 and 46.7%. In addition, dynamic disulfide bonds markedly improved the multiple fatigue–healing capacity of DPA/CRMA, and the number of fatigue–healing cycles for DPA/CRMA was 7, whereas it was only 4 cycles for CRMA. This study provided a new method to extend the service life of waste CRMA pavement.]]></description>
      <pubDate>Thu, 24 Apr 2025 09:07:42 GMT</pubDate>
      <guid>https://trid.trb.org/View/2526273</guid>
    </item>
    <item>
      <title>A review on the role of nanocomposites for desulfurization of liquid transportation fuels</title>
      <link>https://trid.trb.org/View/2501346</link>
      <description><![CDATA[Stringent sulfur removal regulations from transportation fuels from typical levels of 500 ppm to ultra-low levels of 10 ppm (BS-6 standard) present a critical challenge for the crude processing industry. This research thoroughly investigates emerging desulfurization technologies, with a focus on nanocomposite (NC) materials that exhibit exceptional sulfur removal efficiency. Advanced nanocomposite catalysts, such as (TBA)₄PW₁₁Fe@TiO₂@PVA, have near-complete removal rates of 96–99% for complicated sulfur compounds like dibenzothiophene (DBT) and derivatives. The performance spectrum spans from basic materials with 20–38% removal to advanced nanocomposite systems with up to 99% desulfurization efficiency. By synthesizing current strategies involving transition metal-based, polyoxometalate, and hybrid nanocomposite materials, this study highlights transformative approaches to meeting increasingly stringent environmental regulations in fuel processing, with selective removal techniques targeting specific sulfur molecular structures.]]></description>
      <pubDate>Fri, 21 Mar 2025 09:03:39 GMT</pubDate>
      <guid>https://trid.trb.org/View/2501346</guid>
    </item>
    <item>
      <title>Gradient activation mechanism and performance evaluation of highly-WTR modified asphalt</title>
      <link>https://trid.trb.org/View/2507803</link>
      <description><![CDATA[Increasing the dosage of waste tire rubber (WTR) particle in paving asphalt can improve the performance and achieve the maximum resource utilization of WTR. However, the dosage increase of WTR particle will lead to the problems of poor compatibility and workability. In this paper, a gradient activation method of WTR particle was proposed, and the combination of rubber particle with different treatment depths was optimized. The pre-swelling and twin-screw mechanical extrusion were carried out for WTR, and activation degree was evaluated by solubility, microstructure and chemical characterization. The effect of recombination ratio on the comprehensive performance of highly- WTR modified asphalt was investigated. The results showed that the more rigorous treatment conditions for WTR, the deeper the degree of desulfurization, resulting in poorer high-temperature performance of rubber asphalt. After WTR subjecting deep treatment, the resulting modified asphalt in terms of softening point, rotational viscosity and Superpave rutting parameter tends to be close to the matrix asphalt. The influencing factors of combined pre-swelling and extrusion treatment process for rubber in descending order are extrusion temperature, pre-swelling temperature, extrusion speed, pre-swelling time, number of extrusion and aromatic oil dosage. When extrusion temperature is higher than 220 ℃, styrene-butadiene rbber occurred desulfurization reverse phenomenon. The desulfurization process of 18 studied WTR samples can be divided in “deep zone, medium zone, shallow zone”. The fracture of S-S, C-S and CS bonds in the rubber occurs in deep zone and the solubility of the rubber varies greatly in “medium zone”. Considering the balance of comprehensive performance of modified asphalt, the proportional composition activated rubber is determined. This study helps to achieve greater resource utilization of WTR in paving industry.]]></description>
      <pubDate>Thu, 20 Mar 2025 09:49:13 GMT</pubDate>
      <guid>https://trid.trb.org/View/2507803</guid>
    </item>
    <item>
      <title>Desulphurisation of waste rubber powder using mechanochemical method and the influence on modified asphalt</title>
      <link>https://trid.trb.org/View/2509314</link>
      <description><![CDATA[The desulfurization treatments are vital for recycling waste rubber powder (WRP). The mechanochemical method accelerates desulfurization activation of additives, enhancing WRP's surface roughness and activity. This study employed mechanochemical desulfurization to produce desulfurized waste rubber powder (DWRP) modified asphalt. Variables like desulfurizer content, mixing temperature, and time were examined during the desulfurization process. Results revealed that organic disulfide (OGDS) had minimal impact on rubber's main chain but significantly affected sulfur cross-linked bonds. Optimal desulfurization conditions for OGDS were determined: 3.0% content, 140°C temperature, and 30 min mixing time. Scanning electron microscopy illustrated the destructive micromorphology of DWRP, featuring irregular surfaces with numerous holes or protrusions. DWRP-modified asphalt exhibited enhanced properties: a 44% increase in 5°C ductility, a 57% reduction in 180°C viscosity, and a 75% decrease in segregation softening point difference.]]></description>
      <pubDate>Thu, 27 Feb 2025 10:46:36 GMT</pubDate>
      <guid>https://trid.trb.org/View/2509314</guid>
    </item>
    <item>
      <title>Mechanisms associated with sulfidation gas release, desulphurisation and degradation of rubber powder in crumb rubber modified asphalt</title>
      <link>https://trid.trb.org/View/2487554</link>
      <description><![CDATA[Odorous sulphidation gases are released during the construction of crumb rubber-modified asphalt (CRMA), causing pollution to the environment. To study the associated mechanism of sulfidation gas (H2S, CH4S, COS and CS2) release and the desulphurisation and degradation of CR in asphalt, the release law of sulphidation gas of CRMA was studied by a gas detector. Gel permeation chromatography (GPC), fluorescence microscope, toluene insoluble (TI) and potentiometric titration tests were used to study the desulphurisation and degradation of CR. The results showed that vulcanised CR in CRMA led to the generation of sulphidation gas with the increase in temperature, time and stirring speed. The average molecular weight of CRMA increased, while the TI and unsaturation (A) decreased after the desulphurisation and degradation of CR. Under the influence of temperature, heating time and stirring speed, the A was reduced by 0.72%∼8.87%, 1.18%∼10.69% and 0.75%∼8.12%, respectively. There was a strong correlation between the concentration of sulphidation gas and the desulphurisation and degradation parameters of CRMA. The reaction of ·H, –CH3, CO with the –SxH generated by the C–S, S–S, C=C fracture during the desulphurisation and degradation of CR was the main reason for the generation of sulphidation gas.]]></description>
      <pubDate>Wed, 29 Jan 2025 16:57:25 GMT</pubDate>
      <guid>https://trid.trb.org/View/2487554</guid>
    </item>
    <item>
      <title>Development of sustainable desulfurized waste crumb rubber modified asphalt with enhanced self-healing properties</title>
      <link>https://trid.trb.org/View/2446209</link>
      <description><![CDATA[Developing waste crumb rubber modified asphalt (CRMA) with enhanced self-healing properties can improve the crack-healing ability of asphalt, which is conducive to extending the service life of asphalt pavements. The objective of this study is to introduce dynamic disulfide bonds into desulfurized waste crumb rubber and to prepare two types of intrinsic self-healing waste crumb rubber modified asphalt by the breakage-rearrangement effect of dynamic disulfide bonds. Chemical structure analysis revealed that through the esterification reaction between -COOH in dithiodipropionic acid (DPA) and dithiosalicylic acid (DTSA) and -OH in desulfurized waste crumb rubber, DPA/CRMA with aliphatic disulfide bonds and DTSA/CRMA with aromatic disulfide bonds were successfully prepared. The results of the healing tests showed that DPA/CRMA and DTSA/CRMA exhibited better healing properties due to the breakage-rearrangement effect of dynamic disulfide bonds. The fatigue healing indices of DPA/CRMA and DTSA/CRMA were 31.3 % and 36.3 % higher than those of CRMA. The fracture healing rates of DPA/CRMA and DTSA/CRMA were enhanced by 67.6 % and 79.9 % compared to CRMA. The rheological test results revealed that DPA/CRMA exhibited better cracking resistance both before and after aging compared to DTSA/CRMA. Overall, the DTSA/CRMA exhibited better self-healing performance due to the lower bond energies and stronger breakage-rearrangement effect of the aromatic disulfide bonds, while the DPA/CRMA had better cracking resistance.]]></description>
      <pubDate>Thu, 21 Nov 2024 09:26:09 GMT</pubDate>
      <guid>https://trid.trb.org/View/2446209</guid>
    </item>
    <item>
      <title>Investigation of Improving Stability in Desulfurized-Rubber-Modified Asphalt Using Cerium-Stearate Incorporation</title>
      <link>https://trid.trb.org/View/2447279</link>
      <description><![CDATA[To enhance the compatibility of high-content desulfurized-rubber-modified asphalt (DRMA), the innovative selection of cerium hard acid is employed in this study to investigate its impact on the compatibility of DRMA. The results indicate that when the optimal content of cerium stearate is 1%, the compatibility of the modified asphalt is improved. On the microscopic level, it is observed that the total heat absorption of the modified asphalt decreases and thermal storage stability is enhanced as measured by differential scanning calorimetry. On the macroscopic level, it gives the smallest difference in softening point, optimal storage stability, and best compatibility of the modified asphalt. Additionally, dissolution tests and adhesion tests demonstrate that the inclusion of cerium stearate increases the solubility of desulfurized rubber in asphalt and reduces the stripping rate of desulfurized-rubber particles on the asphalt surface, thereby decreasing phase separation and promoting the compatibility of DRMA. Furthermore, rheological tests indicate that cerium stearate improves both high-temperature and low-temperature performance of the modified asphalt. The addition of cerium stearate increases the dynamic shear modulus of the modified asphalt, maintaining good stability and elasticity under shear loading, with minimal change in low-temperature rheological properties and lower temperature sensitivity, indicating the best compatibility at this point. Finally, molecular-dynamics simulation data indicate that the addition of cerium stearate decreases the parameter difference in the dissolution of modified asphalt and enhances the binding energy of the modified asphalt, demonstrating the feasibility of cerium stearate in promoting the compatibility of modified asphalt.]]></description>
      <pubDate>Sat, 02 Nov 2024 16:43:09 GMT</pubDate>
      <guid>https://trid.trb.org/View/2447279</guid>
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