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    <title>Transport Research International Documentation (TRID)</title>
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    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
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    <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>
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      <title>Transport Research International Documentation (TRID)</title>
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      <title>Långsiktiga egenskaper och klimatavtryck av asfaltmassor med biobindemedel : laboratoriestudie och livscykelanalys</title>
      <link>https://trid.trb.org/View/2666493</link>
      <description><![CDATA[Bio-asphalt with bio-extended bituminous binder, where a renewable binder partially replaces petroleum bitumen, is a promising solution to reduce the asphalt industry's fossil dependence and climate impact. This study has investigated how a bio-binder affects the long-term performance and climate impact of asphalt mixtures. The study focused on bio-extended bituminous binders containing Tall Oil Pitch (TOP) and a polymer-modified bitumen (PMB) with a biogenic component as alternatives to conventional bituminous binders. The methods in this study include laboratory testing of binders and asphalt mixtures, such as ageing, rheology, fatigue, cracking resistance and water sensitivity. A life cycle assessment (LCA) has also been carried out to assess the climate impact from raw material extraction to pavement (construction stage, life cycle phases A1-A5 according to European standards for sustainability of construction works), with a special consideration of biogenic carbon (part of life cycle phases C/D according to the European standards). The results show that bio[1]extended binders with TOP meet technical requirements for bituminous binders. However, at a higher TOP content, brittleness and reduced fatigue resistance of asphalt mixtures can occur at low temperatures after ageing. The PMB with a biogenic component showed good performance. The LCA shows that bio-extended binders marginally increase the fossil Global Warming Potential, but biogenic carbon accounting according to an alternative method could halve the total climate impact. This study shows that bio-extended binders have the potential to contribute to more sustainable asphalt pavements. For continued development, full-scale trials are recommended, as well as further research on ageing, reuse, alternative adhesion promoter and standardisation of climate accounting for biogenic materials in asphalt.]]></description>
      <pubDate>Thu, 05 Feb 2026 08:32:43 GMT</pubDate>
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    <item>
      <title>Fatigue damage in Swedish steel bridges : overview, analysis and repair strategies</title>
      <link>https://trid.trb.org/View/2598662</link>
      <description><![CDATA[Fatigue damage is one of the leading causes of deterioration in steel road and railway bridges. It is an important consideration during the design of new bridges, as well as in the assessment and inspection of existing structures. Consequently, it is important to identify fatigue-prone details and to understand both the development and underlying causes of the damage. The aim of this report is to improve the understanding of fatigue damage in steel bridges, to investigate the most appropriate methods for fatigue evaluation for certain damages, and give recommendations for the most appropriate repair and retrofitting strategies. The aim is reached by going through the Swedish bridge stock, identifying bridges affected by fatigue, and analysing the causes of damage using various fatigue assessment methods. Most cases of fatigue damage observed in the Swedish bridge stock are related to unforeseen or overlooked structural behaviour. However, poor execution of welded structural details also frequently contributes to the damage. In many instances, the Nominal Stress Method proved unsuitable, significantly overestimating the fatigue life. In contrast, local approaches, such as the Structural Hot-Spot Stress Method, the Effective Notch Stress Method, and a method based on Linear Elastic Fracture Mechanics, were usually able to provide accurate predictions of the fatigue life.]]></description>
      <pubDate>Fri, 12 Sep 2025 10:19:47 GMT</pubDate>
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    <item>
      <title>Untersuchungen zum Ermüdungsverhalten von Kopfbolzendübeln an Bauteilen von älteren Verbundbrücken</title>
      <link>https://trid.trb.org/View/2592045</link>
      <description><![CDATA[Die Talbrücke Rahmede wurde Ende der 1960er Jahre im Zuge der A45 als sechsfeldriges Durchlaufsystem in Stahlverbundbauweise gebaut und in Betrieb genommen. Die Verbundsicherung wurde mit Kopfbolzendübeln (System Peco) mit zusätzlichen Wendeln um den Schaft der Dübel realisiert. Durch den Rückbau der Talbrücke Rahmede können Bauteile mit einer 50-jährigen Belastungshistorie untersucht werden. Ziel ist, Erkenntnisse zum Ermüdungsverhalten von Kopfbolzendübeln zu gewinnen, um eine bessere Einschätzung über die Ermüdungssicherheit von Stahlverbundbrücken zu erhalten. Die derzeit gültigen Vorgaben bezüglich der Ermüdungsfestigkeit von Kopfbolzendübeln sollen geprüft und gegebenenfalls angepasst werden. Anhand der Prüfkörper aus hoch belasteten Bauteilen soll der Schädigungszustand der Verdübelung genauer untersucht und sollen Rückschlüsse auf die Restnutzungsdauer beziehungsweise die Ermüdungssicherheit der alten Verdübelungen gezogen werden. Im Rahmen des Versuchsprogramms ist die vorgeschlagene Einteilung in ungeschädigte Bauteilhälften, ungeschädigte Dübel und geschädigte Dübel zu prüfen und gegebenenfalls ein neues Konzept zu entwickeln. Darüber hinaus sollen Referenzprüfkörper erstellt werden, um die Ergebnisse vergleichen zu können. ABSTRACT IN ENGLISH: The dismantling of the steel composite bridge Talbrücke Rahmede provides a rare opportunity to examine components with a 50-year load history. The aim is to gain insights into the fatigue behaviour of stud connectors in order to obtain a better assessment of the fatigue safety of steel composite bridges. Fatigue tests will be carried out on the  components in order to review the current specifications regarding the fatigue strength of stud connectors and to adjust them, if necessary.]]></description>
      <pubDate>Mon, 17 Nov 2025 08:05:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/2592045</guid>
    </item>
    <item>
      <title>Entwickung und Standardisierung von Methoden zur messdatengestützten Tragsicherheitsbewertung von Straßenbrücken und die Integration in digitale Zwillinge (ANYTWIN)</title>
      <link>https://trid.trb.org/View/2510572</link>
      <description><![CDATA[Im Verbundforschungsvorhaben ANYTWIN sollen für fünf ausgewählte Tragsicherheitsnachweise an Straßenbrücken (beispielsweise Schubversagen, Beulen, Ermüdung), die allein rechnerisch in der Praxis häufig nicht erbracht werden können, Konzepte zur messdatengestützten Nachweisführung entstehen. Die Konzepte sind so standardisiert, dass eine Übertragbarkeit der Vorgehensweise auf Straßenbrücken gleichen Typs (zum Beispiel Spannbeton- oder Stahlfachwerkbrücke) möglich ist. Diese tragen folglich zur Homogenisierung und Prüfbarkeit der messdatenbasierten Tragsicherheitsbewertung bei. Die Integration der Messdaten und Nachweisergebnisse in einen digitalen Zwilling soll im Projekt durch die Entwicklung eines einheitlichen, auf alle Straßenbrücken übertragbaren Datenstrukturmodells ermöglicht werden. Durch die Vereinheitlichung wird eine Netzbetrachtung möglich, sodass Synergieeffekte genutzt werden können und eine clusterbasierte Analyse der Bauwerke im Hinblick auf Überwachungskonzepte ermöglicht wird. Die BASt ist unter anderem verantwortlich für die Arbeitspakete "Analyse des Nachrechnungsbestands", "Erarbeitung des Aktualisierungspotenzials der Regelwerke", und "Entwicklung von Handlungsempfehlungen für messdatenbasierte Tragsicherheitsnachweise". ABSTRACT IN ENGLISH: In the joint research project ANYTWIN, concepts for measurement data-based verification are to be developed for five selected structural safety verifications on road bridges (e.g. shear failure, buckling, fatigue), which often cannot be provided by calculation alone in practice. The concepts are standardised in such a way that the procedure can be transferred to road bridges of the same type (e.g. prestressed concrete or steel truss bridges). These therefore contribute to the homogenisation and verifiability of the measurement-based structural safety assessment. The integration of the measurement data and verification results into a digital twin is to be made possible in the project by developing a standardised data structure model that can be transferred to all road bridges. This standardisation will enable a network analysis, so that synergy effects can be used and a cluster-based analysis of the structures with regard to monitoring concepts is possible. Among other things, BASt is responsible for the work packages "Analysis of the recalculation of existing structures", "Development of the potential for updating the regulations", and "Development of recommendations for action for measurement-based structural safety verifications". ]]></description>
      <pubDate>Mon, 24 Feb 2025 07:28:33 GMT</pubDate>
      <guid>https://trid.trb.org/View/2510572</guid>
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    <item>
      <title>Numerical investigations of rolling contact fatigue crack growth in a rail head</title>
      <link>https://trid.trb.org/View/2491314</link>
      <description><![CDATA[Rolling Contact Fatigue (RCF) cracks in railway rails are critical due to their impact on safety and maintenance costs. A rail break can be the ultimate consequence of progressive crack growth. Understanding influential mechanisms involved in RCF initiation and propagation is essential for developing effective inspection, maintenance, and replacement strategies. There are still open questions, particularly regarding the direction and rate of RCF crack growth. This is due to the complex non-proportional and compressive loading from wheel-rail contact in combination with rail bending and thermal loads. This thesis aims to develop and employ a numerical framework for predicting directions and rates for RCF crack growth in railway rails under operational loading. A numerical procedure for simulating a propagating crack in 2D is developed. The finite element model features an inclined surface-breaking crack subjected to wheel-rail contact load, rail bending, and temperature drop as isolated scenarios and in combinations. The effective crack propagation direction is predicted based on an accumulative vector crack tip displacement criterion. The influence of crack face friction and crack growth rate predictions are added to the numerical framework. It is observed that frictional cracks tend to go deeper into the rail under a pure contact load and under a combination of bending and contact loads, while friction has a moderate influence on crack paths under combined tensile thermal and contact loads. Furthermore, friction reduces crack growth rates. The numerical framework for a frictionless stationary crack is extended to the 3D case of a semi-circular gauge corner crack embedded in a 60E1 rail. Results are evaluated at points along the crack front. The influence of crack size and inclination, magnitude and position of the contact load, wheel-rail tractive forces, rail bending with different track support conditions, and varying thermal loads is studied.]]></description>
      <pubDate>Fri, 17 Jan 2025 15:18:27 GMT</pubDate>
      <guid>https://trid.trb.org/View/2491314</guid>
    </item>
    <item>
      <title>Fatigue crack behaviour in pearlitic railway rails subjected to large shear deformation</title>
      <link>https://trid.trb.org/View/2491312</link>
      <description><![CDATA[The impacts from global warming and climate change continue to rise, and securingthe needs of future generations requires a transition to a climate-neutral society. Rail transportation, as one of the safest and most energy-efficient modes of transportation, offers a sustainable alternative to fossil-fuel-based transportation. There are, however, many challenges that must be addressed for rail transportation to be a more competitive option. Safety, functionality, reliability, and economic feasibility must be ensured. The major challenge related to materials is rolling contact fatigue, which impairs safety and economic reliability. The imposed loadings from the wheel/rail contact induce severedeformations in the near-surface region of the rail, leading to the formation of an aligned and anisotropic microstructure. Rolling contact fatigue cracks are often initiated in this region, and crack propagation is affected by the direction of the microstructure alignment. The aim of this thesis work is to better understand how the anisotropy developing inservice changes the fatigue and fracture characteristics of rail steels. Fatigue crack propagation experiments under uniaxial, pulsating torsional, and non-proportional multiaxial loading, on both virgin and predeformed pearlitic rail steel R260 have been conducted. The material state of the predeformed material is similar to the material state in thenear surface of used rails and was obtained by bi-axial large shear deformation undercompression.]]></description>
      <pubDate>Fri, 17 Jan 2025 15:18:24 GMT</pubDate>
      <guid>https://trid.trb.org/View/2491312</guid>
    </item>
    <item>
      <title>Fatigue of steel bridges : new structural details and the implementation of high strength steel</title>
      <link>https://trid.trb.org/View/2491300</link>
      <description><![CDATA[The use of high strength steel has the potential to reduce the amount of steel used in bridge structures and thereby facilitate a more sustainable construction. The amount of steel and what steel grade that can be used in bridge structures and other cyclic loaded structures are often limited by a material degradation process called fatigue. The fatigue resistance of steel bridges is to a large extent depending on the design of structural details and connections. The design engineer is limited by the selection of a few pre-existing structural details with rather poor fatigue strength to choose from when designing steel bridges. Therefore, he/she is often forced to increase the overall dimensions of the structure to cope with the design requirements of fatigue. This doctoral thesis aims at increasing the fatigue resistance of fatigue prone structural details and connections by implementing new structural solutions to the already existing details given in the design standards. A typical fatigue prone detail is the vertical stiffener at an intermediate cross-beam, which will be in focus. By improving the fatigue resistance, less steel material will be required for the con-struction of new steel bridges and composite bridges of steel and concrete. It is shown in this thesis and the appended papers that the use of high strength steel for bridge structures can considerably reduce the amount of steel used, the cost of the steel material, and the harmful emissions. However, this is only true if the fatigue strength of critical details can be improved. This is shown through a survey of existing bridge structures and an optimisation of a steel and concrete composite bridge.]]></description>
      <pubDate>Fri, 17 Jan 2025 15:18:11 GMT</pubDate>
      <guid>https://trid.trb.org/View/2491300</guid>
    </item>
    <item>
      <title>Case study: design comparison using flexural beam fatigue and modulus test results obtained from laboratory versus field test samples</title>
      <link>https://trid.trb.org/View/2427520</link>
      <description><![CDATA[Modulus (beam and indirect tensile strength) and beam fatigue tests were conducted on asphalt beams made in the laboratory from both laboratory prepared and production mixes. The same tests were also conducted on samples cut and cored from the newly built asphalt pavement using the same asphalt mix. Significant differences in laboratory versus production mix versus field results were obtained in both modulus and fatigue life. Although these differences were less when comparing the differences in asphalt thickness needed to get the same pavement fatigue life designed using data from laboratory mixes versus data from field cut specimens. Pavement design using modulus and fatigue test data specific to the asphalt mix proposed for the project for laboratory and field made samples is now a common requirement in New Zealand. Although the differences in modulus values from laboratory versus field made samples has caused difficulties in accepting the built asphalt pavement. This paper will help understand differences expected in laboratory versus field and give guidance on how to establish criteria for modulus and fatigue testing in construction quality control. This is important given traditional testing of binder and asphalt mixes following current specifications can often reject new sustainable asphalt mixes with repurposed waste products and bitumen replacements from bio sources. A performance based testing process for the laboratory and the field will allow the use of more sustainable asphalt mixes paving the way to reduced carbon.]]></description>
      <pubDate>Tue, 10 Sep 2024 14:18:49 GMT</pubDate>
      <guid>https://trid.trb.org/View/2427520</guid>
    </item>
    <item>
      <title>Laboratory and field performance evaluation with simple IDEAL cracking test for recycled asphalt mixtures</title>
      <link>https://trid.trb.org/View/2427516</link>
      <description><![CDATA[To satisfy the durability requirement in terms of balanced performance for the recycled asphalt concrete, IDEAL-CT was conducted on the specimens for fatigue performance evaluation in this investigation. Especially at the QC stage, rapid screening and testing with efficiency and reliability for the recycled asphalt products are essential. In this regard, the IDEAL-CT can be performed using the conventional indirect tensile test (IDT) process without modifying any test configuration. With the curve of load versus displacement, various parameters including CT index can be obtained to evaluate the resistance to cracking of asphalt mixtures. In addition to this simple shear test, wheel tracking test results were also included for the performance evaluation based on performance space diagram. Although the IDEAL-CT has not been comprehensively investigated and adopted for construction practice in Taiwan, 12-month field test results were also collected and utilized to validate the fatigue cracking performance. The balanced mix design concept will be provided to the relevant road authorities as well as asphalt contractors. The research is expected to achieve the goals of the improvement of performance based contracts in the future.]]></description>
      <pubDate>Tue, 10 Sep 2024 14:18:45 GMT</pubDate>
      <guid>https://trid.trb.org/View/2427516</guid>
    </item>
    <item>
      <title>Austroads Coober Pedy sprayed seal trial: 11-year inspection findings</title>
      <link>https://trid.trb.org/View/2404137</link>
      <description><![CDATA[This report describes the results obtained from the 11-year inspection of the Austroads Coober Pedy trial site which was constructed to compare the performance of different polymer modified binder (PMB) grades in sprayed sealing applications. The report summarises expert assessments of the different sections of the trial site which were performed 11 years after the site was constructed. It also includes an analysis of the changes in seal surface texture and binder properties which have occurred over the lifetime of the trial site. The results obtained from expert assessments at the 11-year inspection indicated that all sections of the trial site were performing well except for small areas of rutting and cracking which appeared to be due to failure of the underlying pavement. The trial site sections have shown an overall reduction in surface texture as the time since construction has increased. The binders in each trial section have progressively oxidised and become harder over the life of the trial site with the C170 bitumen section showing more oxidation and hardening than the PMB sections. The results obtained in time-sweep tests indicated that the C170 bitumen binder showed the worst fatigue cracking performance after 11 years of service, while the PMBs appeared to show better fatigue cracking performance.]]></description>
      <pubDate>Thu, 18 Jul 2024 10:34:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/2404137</guid>
    </item>
    <item>
      <title>A Critical Look at the Semi-Circular Bend Test in Promoting Best Asphalt Mix Performers</title>
      <link>https://trid.trb.org/View/2389349</link>
      <description><![CDATA[Fracture-mechanics-based tests have shown promising abilities in characterization of asphalt mixes for their fatigue life when tested under specific modes of testing. The Semi-Circular Bend (SCB) is one of those most commonly used test methods in evaluating the fatigue life. As a surrogate test, the SCB is generally able to evaluate fatigue cracking of asphalt mixes in terms of crack propagation. To date, several cracking indices derived from the load versus displacement · responses when tested at intermediate in-service temperature for asphalt mixtures. These indices include the commonly known Flexibility Index (FI), and other indices being recently studied such as Cracking Resistance Index (CRI), Balanced Cracking Index (BCI), and Rate-Dependent Cracking Index (RDCI). The purpose of this study was to utilize results of five plant-produced asphalt mixes in determining each of the newly proposed indices and compare with the Fl. All cracking indices (Fl, BCI, CRI, and RDCI) were able to distinguish cracking resistance of asphalt mixes similarly when mixes tested at testing temperature corresponding to their intermediate Performance Graded Asphalt Cement temperatures, However, the BCI index was not able to distinguish intermediate-temperature cracking resistance of long-term aged asphalt mixes similar to other indices, i.e., FI, CRI, and RDCI indices at 25°C.]]></description>
      <pubDate>Thu, 13 Jun 2024 09:46:17 GMT</pubDate>
      <guid>https://trid.trb.org/View/2389349</guid>
    </item>
    <item>
      <title>Assessment of shear and energy-absorption capacity of reinforced concrete elements under impulsive loads</title>
      <link>https://trid.trb.org/View/2389084</link>
      <description><![CDATA[Impulsive loads have been observed to cause brittle shear failure in reinforced concrete elements designed for ductile failure modes under static loads. Brittle failure modes exhibit poorer energy absorption capabilities compared to ductile flexural failure modes due to their limited deformation capacity, leading to premature failure. The discrepancy between the responses under static and extreme dynamic loads arises from inertia and wave propagation effects, which tend to increase as the load duration decreases relative to the fundamental period of the element. This thesis investigated the occurrence of shear failures in reinforced concrete elements subjected to impulsive loads, both experimentally and numerically, and evaluated to what extent current analysis methods for impulse-loaded structures can predict shear failure. Furthermore, the study examined the influence of crucial parameters on the energy absorption capacity during flexural failure modes when shear failure was inhibited.]]></description>
      <pubDate>Mon, 10 Jun 2024 14:06:24 GMT</pubDate>
      <guid>https://trid.trb.org/View/2389084</guid>
    </item>
    <item>
      <title>Nachhaltige Ermüdungsbemessung von Fahrbahnübergängen nach Eurocode</title>
      <link>https://trid.trb.org/View/2353868</link>
      <description><![CDATA[Durch experimentelle und theoretische Untersuchungen soll eine wissenschaftliche Grundlage für einen zuverlässigen und wirtschaftlichen Ermüdungsnachweis von Fahrbahnübergangskonstruktionen im Rahmen des Eurocode-Bemessungskonzepts erarbeitet werden. In diesem Zusammenhang werden ausgewählte typische Bemessungsdetails der Lamellenkonstruktion untersucht, die sich in der Praxis als
robust erwiesen haben, jedoch mit den aktuellen europäischen Regelungen hinsichtlich des
Lastmodells sowie Versuchsdurchführung (Schwellzug-Ermüdungsversuche) nicht mehr verifiziert werden können. Die zu entwickelnden Ansätze sollen mit den aktuellen Regelungen kompatibel und integrierbar sein. Der Nutzen liegt in der verbesserten Nachweisführung aktueller Reglungen in Bezug auf die nachhaltige, zuverlässige und wirtschaftliche Bemessung von Fahrbahnübergängen für weniger Materialverbrauch, Verarbeitungsaufwand, Baukosten und Unterhaltungsaufwand. ABSTRACT IN ENGLISH: Through experimental and theoretical investigations, a scientific basis for a reliable and economical fatigue analysis of bridge deck expansion joints within the framework of the Eurocode design concept is to be developed. In this context, selected typical design details of the lamella structure are investigated, which have proven to be robust in practice, but which can no longer be verified with the current European regulations with regard to the load model and fatigue test execution. The approaches to be developed should be compatible and integrable with the current regulations. The benefit lies in the improved verification of current regulations with regard to the sustainable, reliable and economical design of bridge deck expansion joints for less material consumption, processing effort, construction costs and maintenance effort. 
]]></description>
      <pubDate>Thu, 21 Mar 2024 13:03:40 GMT</pubDate>
      <guid>https://trid.trb.org/View/2353868</guid>
    </item>
    <item>
      <title>Comparison of Fatigue Law Parameters between Extension-Contraction (EC) and Four-Point Bending (4PB) Tests</title>
      <link>https://trid.trb.org/View/2344624</link>
      <description><![CDATA[This paper analyses two types of test, used in Canada, France and United States, allowing laboratory characterization of the fatigue performance of bituminous mixes. The Extension-Contraction (EC) test, realized on a cylindrical sample, and the Four-Point Bending (4PB) test, realized on a rectangular beam, are analysed. The tested material is a High Modulus Asphalt Concrete (HMAC). Fatigue tests will be carried out in displacement control under cyclic sinusoidal at 10°C and 10 Hz. Our results show that the standard analysis criterion, noted Nf50%, associated with a 50 percent drop in stiffness (or initial modulus) during fatigue test, appears to be limited. However, by adopting a failure criterion, noted N(fE_phiE), associated with the evolution of the stiffness (IE*I) and the phase shift angle (phiE) in the Black space, the results then show that the coefficients of the Wohler curve become more comparable between for the two types tests. The new approach, based on N(fE_phiE), appears to be a good option for overcoming the limitations and weaknesses of the classical approach, based on Nf50%. However, the determination of the phase shift angle (phiE) between the displacement and the force must be defined rigorously during the test to clearly determined the fatigue life established by N(fE_phiE).]]></description>
      <pubDate>Wed, 28 Feb 2024 14:11:24 GMT</pubDate>
      <guid>https://trid.trb.org/View/2344624</guid>
    </item>
    <item>
      <title>Evaluation of Several Asphalt Binder Parameters Related to Fatigue and Non-Load Related Pavement Failure</title>
      <link>https://trid.trb.org/View/2342633</link>
      <description><![CDATA[The relationship between the properties of asphalt binders and non-load related cracking in pavements is well documented. As part of the Superpave™ specification, the parameter G*.sin(delta) was adopted as a measure of a binder's susceptibility to fatigue failure. Numerous subsequent studies have called into question the validity of this parameter and have shown that correlation with fatigue behaviour of asphalt pavements in the field is poor. Among the more recent binder fatigue tests is the Double Edge Notched Tension (DENT) test, with the resulting critical Crack Tip Opening Displacement (CTOD) adopted for acceptance of binders in Ontario. One of the main downsides as an acceptance test, however, is relatively high test variability and poor reproducibility. The current paper presents the laboratory evaluation of several parameters related to fatigue and non-load related cracking of asphalts. A number of tests such as G* .sin(delta), DENT CTOD, Binder Yield Energy (BYET) test, Linear Amplitude Sweep (LAS) test, Glover-Rove (GR) parameter and Delta Tc were conducted on a series of neat and modified asphalt cements of different sources and having different rheological properties. Correlations and interdependence of several of these parameters are evaluated and their likelihood for predicting fatigue-related failure of asphalt pavements is discussed.]]></description>
      <pubDate>Wed, 28 Feb 2024 14:11:23 GMT</pubDate>
      <guid>https://trid.trb.org/View/2342633</guid>
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