<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <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" />
    <description></description>
    <language>en-us</language>
    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>Probability-based dynamic amplification factor assessment of a hybrid cable-stayed suspension bridge under combined highway and railway loads</title>
      <link>https://trid.trb.org/View/2648192</link>
      <description><![CDATA[Dynamic amplification factors (DAFs) are widely used to consider vehicular load in the design and assessment of bridges. However, existing research and design codes largely focus on simply supported beam bridges, with limited attention paid to long-span cable-supported systems. In particular, stress amplification of stay cables and hangers remains insufficiently addressed, despite their importance in load transfer and fatigue performance. To address these limitations, this study proposes a probabilistic framework for DAF evaluation in a hybrid cable-stayed suspension bridge. Vehicle–bridge interaction analysis is conducted based on a refined finite element model, considering combined highway and railway loading. The probability density evolution method is employed to estimate the probabilistic distributions of mid-span displacement and cable/hanger stress responses under various loading conditions. Simulation results reveal clear spatial nonuniformity in DAFs across bridge components. The displacement DAF at mid-span reaches 1.20, while stress DAFs in edge hangers can exceed 1.40, indicating elevated fatigue risks compared to interior components. Based on these findings, position-specific DAF recommendations are proposed to support fatigue-resistant design. This work provides a approach for evaluating dynamic effects in complex bridge systems under realistic multi-source traffic conditions.]]></description>
      <pubDate>Tue, 24 Mar 2026 09:09:08 GMT</pubDate>
      <guid>https://trid.trb.org/View/2648192</guid>
    </item>
    <item>
      <title>Linking fatigue resistance of RAP-blended asphalt mixture and its fine aggregate matrix using viscoelastic continuum damage models</title>
      <link>https://trid.trb.org/View/2624696</link>
      <description><![CDATA[The fine aggregate matrix (FAM) plays a critical role in determining the cracking resistance of recycled asphalt mixtures. Although the Viscoelastic Continuum Damage (VECD) model has been introduced to evaluate FAM fatigue behavior, its applicability to systems incorporating reclaimed asphalt pavement (RAP) remains insufficiently verified. This study aims to evaluate the applicability of one variation of a VECD model, originally adapted for binder characterization, in characterizing the complex damage evolution in FAM systems, particularly those incorporating RAP. FAM systems incorporating varying RAP contents (0 %, 25 %, 35 %, 50 %, and 65 %) were utilized, and a damage evolution rate parameter and an appropriate fatigue failure criterion for recycled FAM were defined. Furthermore, by integrating Linear Amplitude Sweep (LAS) test data from binder, fatigue test results from FAM, and IDEAL-CT cracking tolerance indices CTindex from mixture, predictive correlations were developed between both binder/FAM fatigue lives and mixture-level CTindex values. The results indicate that first, the AASHTO T 391 method for determining damage evolution rate is also applicable to FAM systems; second, peak stored pseudo strain energy offers a robust and practical failure criterion for FAM, providing accurate damage assessment with reduced sensitivity to nonlinearities induced by fines at large strains; third, the correlation between mixture CTindex and FAM fatigue life at 0.2 % strain developed using the revised VECD framework outperforms the one using LAS test results of binders. Finally, FAM testing demonstrates strong potential as a complementary tool for performance evaluation and quality control within the Balanced Mix Design (BMD) framework.]]></description>
      <pubDate>Wed, 07 Jan 2026 09:09:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2624696</guid>
    </item>
    <item>
      <title>Investigation on the self-healing performance of asphalt binder under the coupling effect of multiple factors</title>
      <link>https://trid.trb.org/View/2578662</link>
      <description><![CDATA[This study investigates the self-healing performance of asphalt binder under the coupling effects of four critical factors: recovery temperature, recovery time, damage level, and aging conditions. Although existing studies have explored individual influences, the combined and interactive effects of these factors remain insufficiently understood. To address this gap, fatigue-healing-fatigue (F-H-F) tests were conducted using a dynamic shear rheometer (DSR), and the chemical evolution mechanism was examined via thin-layer chromatography with flame ionization detection (TLC-FID). To comprehensively quantify self-healing performance under multi-factor conditions, a novel Complex Recovery Index (CRI) was proposed, integrating modulus recovery (|ARE|₁) and fatigue resistance recovery (|ARE|₂) into a unified evaluation metric. An orthogonal experimental design and regression analysis were applied to assess the influence intensity and coupling mechanisms. The results showed that recovery temperature and time were the dominant variables, exhibiting significant interaction effects. Under optimal conditions (40 °C, 35 min, 50 % damage level), CRI approached 100 %, indicating full recovery. Aging had a negative effect due to the depletion of light components and accumulation of asphaltenes, as confirmed through SARA fraction (Saturates, Aromatics, Resins, and Asphaltenes) analysis. CRI demonstrated strong correlation with aromatics content (R²=0.989) and outperformed conventional indices in sensitivity and consistency (R²=0.999). This study provides a systematic approach to characterizing self-healing behavior of asphalt binder under realistic and complex loading and aging scenarios. The findings offer theoretical support for performance-based material design and practical strategies for improving pavement durability and sustainability.]]></description>
      <pubDate>Mon, 08 Sep 2025 14:54:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/2578662</guid>
    </item>
    <item>
      <title>Shear failure in asphalt mixtures under torsional loading: Evaluation methods, failure mechanisms and evolution behavior</title>
      <link>https://trid.trb.org/View/2493319</link>
      <description><![CDATA[Shear failure is a major form of high-temperature mechanical distress in asphalt mixtures, compromising pavement structural integrity and service durability. Conventional shear tests inadequately evaluate the complex shear stresses and particle torsional migration induced by tire turning and braking. This research elucidates the granular evolution mechanisms underlying torsional shear stress and deformation in asphalt mixtures through novel apparatus and numerical simulation. Results indicate that isotropy and dilation self-organization arise from stress-oblique particle wedging and lever effects. Torsional stiffness and collapse of arch network elucidate structural evolution and yield strength. Coarse aggregate morphology governs peak strength, while angularity, texture, and fine particles influence ductility and residual strength. Asphalt-induced tribological regimes regulate interfacial phase properties and jamming transitions in the granular system. A predictive model and optimized mix design method for torsional shear were developed, incorporating targeted cohesion, internal friction angle, and volume-mechanical indicators. This research provides a systematic framework for the analysis, prediction, and design of asphalt mixtures under torsional shear.]]></description>
      <pubDate>Fri, 28 Feb 2025 16:46:34 GMT</pubDate>
      <guid>https://trid.trb.org/View/2493319</guid>
    </item>
    <item>
      <title>EVALUATION DE LA QUALITE RESIDUELLE D'UNE CHAUSSEE</title>
      <link>https://trid.trb.org/View/1031905</link>
      <description><![CDATA[CETTE ETUDE SE POURSUIT DANS LE CADRE DES ACTIONS ELEMENTAIRES DE RECHERCHE 1.01.61.4 ET 1.01.62.4 RESPECTIVEMENT FICHEES SOUS LES NOS DIRR 501796 ET 501792.]]></description>
      <pubDate>Sat, 20 Nov 2010 15:18:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/1031905</guid>
    </item>
    <item>
      <title>EVALUATION DE LA CAPACITE EN FATIGUE DES PONTS ROUTIERS EN SUISSE</title>
      <link>https://trid.trb.org/View/1020836</link>
      <description><![CDATA[L'AUSCULTATION D'UN PONT AVANT SA MISE EN SERVICE PRESENTE DEUX ASPECTS, L'UN QUALITATIF ET L'AUTRE QUANTITATIF.  LE PREMIER CONSISTE EN UNE INSPECTION GLOBALE DE L'OUVRAGE, EN RELEVANT LES DETERIORATIONS DE TOUTE NATURE.   LE SECOND A POUR OBJET DE CONTROLER LE COMPORTEMENT DE L'OUVRAGE SOUS L'EFFET DE CHARGES STATIQUES ET DYNAMIQUES.  UN CONTROLE PERIODIQUE DE SURVEILLANCE PERMET, PAR COMPARAISON AVEC L'AUSCULATION INITIALE, D'EVALUER L'EVOLUTION DU COMPORTEMENT DE L'OUVRAGE DURANT LES ANNEES DE SERVICE.  LES PRINCIPAUX CRITERES DE JUGEMENT SONT LES SUIVANTS : - A L'ETAT PERMANENT, LA FISSURATION DOIT ETRE NEGLIGEABLE, - LE COMPORTEMENT DE L'OUVRAGE DOIT ETRE REVERSIBLE, - LE RESULTAT DU CALCUL STATIQUE DOIT CORRESPONDRE A CELUI DES MESURES, - LES VIBRATIONS NE DOIVENT PAS CONDUIRE A DES ACCELERATIONS TROP ELEVEES.  (A).  (VOIR FICHE GENERALE DIRR 122655 ET FICHE SESSION 2-2 DIRR 122659).]]></description>
      <pubDate>Sat, 20 Nov 2010 09:43:34 GMT</pubDate>
      <guid>https://trid.trb.org/View/1020836</guid>
    </item>
    <item>
      <title>SESSION 8 : INNOVATIONS - ENROBES Y COMPRIS CONTRATS ET EQUIPEMENTS : LES ENROBES A MODULE ELEVE (EME) : DESCRIPTION, USAGE, PERFORMANCES</title>
      <link>https://trid.trb.org/View/993517</link>
      <description><![CDATA[Les enrobes a module eleve sont des melanges hydrocarbones dont les caracteristiques mecaniques, le module en particulier, permettent dans une conception rationnelle des chaussees de reduire les epaisseurs des couches de chaussee. Cette technique se developpe depuis 15 ans environ en France. Un bilan des avantages et des inconvenients de cette famille d'enrobe est dresse a partir des observations recueillies sur les chantiers realises. Ces materiaux sont utilises sous fort trafic en couches de base ou de fondation. Les reductions d'epaisseur conduisent a des economies appreciables pour le gestionnaire de la voirie. A l'egard de l'environnement, ils induisent une consommation de granulats moindre, parfois une reduction du volume de terrassement, ils sont recyclables. Le grade du bitume est plus dur que celui des bitumes habituels; la resistance a l'ornierage est par consequent en general elevee. Certaines caracteristiques mecaniques immediates peuvent etre mesurees en laboratoire. Il est interessant de completer ces informations par la connaissance du comportement effectif in situ et surtout de la durabilite de ces materiaux que les essais de laboratoire ne permettent pas toujours d'apprehender (vieillissement, evolution de caracteristiques, fissuration...). Les observations faites sur des sites ayant subi 10 a 15 annees de trafic donnent des elements de reponse a ces questions. Le domaine d'emploi est ainsi beaucoup mieux cerne. Ces resultats sont susceptibles de contribuer a eclairer les redacteurs de projets de normes europeennes sur le sujet et les futurs utilisateurs.  (A).  (Voir fiche generale DIRR 133546).  (Titres en anglais et allemand : Asphaltic concrete with high modulus (EME) : description, use, performance. - Strassensbelaege mit hoher Verhaeltniszahl (EME) : Beschreibung, Anwendung, Leistung).]]></description>
      <pubDate>Fri, 19 Nov 2010 20:32:40 GMT</pubDate>
      <guid>https://trid.trb.org/View/993517</guid>
    </item>
    <item>
      <title>Adaptive, Kooperative Technologien fuer den Intelligenten Verkehr (AKTIV) / Adaptive, Cooperative Technologies for Intelligent Traffic (AKTIV)</title>
      <link>https://trid.trb.org/View/940682</link>
      <description><![CDATA[Fahrerassistenzsysteme koennen die aktive Sicherheit von Fahrzeugen wesentlich erhoehen und so zur Strassenverkehrssicherheit beitragen. Erforderlich ist dabei neben der Entwicklung neuer Fahrerassistenzsysteme auch die Bewertung ihres Wirk- und Nutzenpotenzials auf laengere Sicht. Zudem muessen rechtliche Rahmenbedingungen vor Markteinfuehrung untersucht werden. Ziel des Gesamtprojektes AKTIV (Adaptive, Kooperative Technologien fuer den Intelligenten Verkehr) ist die Entwicklung von Fahrerassistenzsystemen zur Erhoehung der aktiven Sicherheit. In Teilprojekten werden eine aktive Gefahrenbremsung, eine integrierte Querfuehrung, ein Kreuzungsassistent sowie ein System zur Gewaehrleistung der Sicherheit von Fussgaengern und Radfahrern entwickelt. Im vorliegenden Teilprojekt "Fahrsicherheit und Aufmerksamkeit" handelt es sich um ein Querschnittsprojekt, in dem Methoden zur Erfassung des Aufmerksamkeitszustandes des Fahrers entwickelt, Nutzenpotenziale und Langzeitwirkungen evaluiert und relevante zulassungs- und haftungsrechtliche Fragen bearbeitet werden. ABSTRACT IN ENGLISH: Driver assistance systems can significantly increase the active safety of vehicles, thus helping improve road traffic safety. Besides developing new driver assistance systems, it is also necessary to evaluate their effectiveness and potential benefit in the long term. Furthermore, legal frameworks must be examined prior to market introduction. The general project designated Adaptive, Cooperative Technologies for Intelligent Traffic is intended to develop driver assistance systems for increasing active safety. An active hazard brake, integrated transverse control, crossing assistant and a system ensuring the safety of pedestrians and bicyclists are to be developed in sub-projects. This sub-project titled Driving Safety and Awareness is intended to develop a cross-section of methods of measuring drivers' level of awareness, evaluate potential benefits and long term effects and examine legal issues of relevance to vehicle registration and liability.]]></description>
      <pubDate>Wed, 06 Oct 2010 17:32:37 GMT</pubDate>
      <guid>https://trid.trb.org/View/940682</guid>
    </item>
  </channel>
</rss>