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    <title>Transport Research International Documentation (TRID)</title>
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    <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>
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      <title>Transport Research International Documentation (TRID)</title>
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    <item>
      <title>Guide d’évaluation des produits de stabilisation du sol et des matériaux</title>
      <link>https://trid.trb.org/View/2071705</link>
      <description><![CDATA[Le présent Guide a pour but d’aider les agences à évaluer les produits de stabilisation du sol et des matériaux vendus par les fournisseurs. Il identifie également les produits et les processus de stabilisation du sol utilisés à l’échelle du pays et dans le monde et donne un aperçu de leurs applications et de leur performance optimales lorsque des données sont disponibles.  Selon le Guide, la stabilisation du sol comprend à la fois les activités de modification et les activités de stabilisation du sol et des matériaux. La modification du sol tient compte de l’amélioration des sols durant ou juste après un mélange pour en améliorer les propriétés techniques, telles que la plasticité et la sensibilité à l’humidité, et pour faciliter ou pour accélérer les travaux de construction. La stabilisation du sol, quant à elle, tient compte du traitement chimique et/ou mécanique d’une masse de sol dans le but d’en améliorer la résistance au cisaillement et la durabilité en vue de son intégration dans une structure de chaussée.  Le présent Guide met l’accent sur la stabilisation des structures de chaussée pour les routes, y compris les couches de forme, les couches de granulats et la valorisation intégrale des chaussées en enrobé, avec enduit superficiel et à revêtement granulaire.  Le projet inclut un analyse documentaire rigoureuse sur les produits et sur les processus applicables au pays et dans le monde. Un sondage détaillé a également été préparé et distribué aux agences, aux consultants et aux entrepreneurs dans le but de recueillir de l’information sur les pratiques de stabilisation et sur les procédures d’évaluation des produits actuelles, utilisées au Canada et à l’étranger. Les fournisseurs de produits de stabilisation ont également répondu à un sondage visant à développer une base de données sur les produits de stabilisation actuels et sur leur utilisation et sur leur performance.]]></description>
      <pubDate>Tue, 29 Nov 2022 14:14:46 GMT</pubDate>
      <guid>https://trid.trb.org/View/2071705</guid>
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      <title>Numerical and experimental investigations of asphalt pavement behaviour, taking into account interface bonding conditions</title>
      <link>https://trid.trb.org/View/1899437</link>
      <description><![CDATA[The interface bond between layers plays an important role in the behavior of pavement structure. However, this aspect has not yet been adequately considered in the pavement analysis process due to the lack of advanced characterizations of actual condition. In many pavement design procedures, only completely bonded or unbounded interfaces between the layers are considered. For the purpose of the better evaluation of the asphalt pavement behavior, this work focused on its investigation taking into account the actual interface bonding condition between the asphalt layers. Based on the layered theory developed by Burmister (1943), the actual interaction between pavement layers was taken into account by introducing a horizontal shear reaction modulus which represents the interface bonding condition for a given state. The analytical solution was then implemented in a numerical program before doing forward calculations for sensitivity analysis which highlights the influence of the interface bonding conditions on the structural behaviors of asphalt pavement under a static load. Furthermore, the numerical program was applied through an original experimental case study where falling weight deflectometer (FWD) tests were carried out on two full-scale pavement structures with or without a geogrid at the interface between the asphalt layers. Backcalculations of the FWD measurements allowed determining field condition of the interface bond between the asphalt layers. The obtained values of the interface shear modulus in pavement structure with a geogrid are smaller than the ones in pavement structure without geogrid. Moreover, all of these values representing field performance are at the same order of magnitude as those from dynamic interlayer shear testing.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:43:49 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899437</guid>
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    <item>
      <title>Optimization of Truck Platoon Wander Patterns Based on Thermo-Viscoelastic Simulations to Mitigate the Damage Effects on Road Structures</title>
      <link>https://trid.trb.org/View/1899400</link>
      <description><![CDATA[The concept of truck platooning is to take advantage of the connectivity technologies and automated driving support systems to link trucks in close formation (convoy) in order to increase transport efficiency, reduce fuel consumption and gas emissions while improving road safety. However, closely guided trucks following each other could have a different impact on road structures than the usual truck traffic. Notably, different studies with traffic simulators highlight the significant effect of the wander pattern of traffic on the damage observed on test road structures. On the other hand, the positioning systems could offer the opportunity to choose an optimized wander pattern of the trucks within the platoons, especially designed to mitigate the overall damage. In this context, the study reported in this paper addresses, through numerical simulations, the multi-loading effects of truck platoons on road structures for different configurations of wander patterns. The aggressiveness of these patterns is evaluated on the basis of the viscoelastic response of the pavement structures (strain field) computed using software ViscoRoute\textcopyright 2.0. Finally, recommendations on the choice of wander pattern configurations to be tested on APT facilities are proposed.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:42:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899400</guid>
    </item>
    <item>
      <title>Effect of climate on asphalt pavement performance using two mechanistic-empirical methods</title>
      <link>https://trid.trb.org/View/1899398</link>
      <description><![CDATA[The objective of this study is to assess the impact of climate on the performance of bituminous pavements with two different methods, and then to examine their impact on actual design scenarios. Three climate cases were selected for the comparisons involving the effect of temperature: one in France (Bordeaux) and two in the United States (Seattle and Phoenix). The case of an experimental site in Québec was also used for comparisons concerning consideration for seasonal variations in ground bearing capacity. The analyses were based on French (Alizé-LCPC) and US (AASHTOWare Pavement ME Design) mechanistic-empirical pavement design approaches. Interesting features of the two design methods are outlined and their fatigue cracking models are linked together. The results of the study highlight the importance, for design purposes, of the empirical fatigue equations as a function of temperature. For the site studied in France, the design results in terms of AC base layer thicknesses indicate that both methods show a similar trend with an increase in temperature. For the site in Québec, which is submitted to severe freeze/thaw cycles, the results show that taking temperature and moisture into account for unbound materials leads to a prediction of more severe permanent deformation.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:42:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899398</guid>
    </item>
    <item>
      <title>Accelerated Pavement Testing to Transport Infrastructure Innovation : Proceedings of 6th APT Conference</title>
      <link>https://trid.trb.org/View/1899387</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 21 Dec 2021 16:41:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899387</guid>
    </item>
    <item>
      <title>Towards an adapted ovalization system for flexible airfield pavement interface characterization using rolling-wheel or HWD loads. In : Accelerated Pavement Testing to Transport Infrastructure Innovation. Lecture Notes for Civil Engineering</title>
      <link>https://trid.trb.org/View/1899386</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 21 Dec 2021 16:41:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899386</guid>
    </item>
    <item>
      <title>Design of reinforced pavements with glass fiber grids: from laboratory evaluation of the fatigue life to accelerated full-scale test. In : Accelerated Pavement Testing to Transport Infrastructure Innovation. Lecture Notes for Civil Engineering</title>
      <link>https://trid.trb.org/View/1899383</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 21 Dec 2021 16:41:13 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899383</guid>
    </item>
    <item>
      <title>Recycling. In : Testing and Characterization of Sustainable Innovative Bituminous Materials and Systems</title>
      <link>https://trid.trb.org/View/1899366</link>
      <description><![CDATA[Recycling of old pavements is becoming a widespread technique; in order to preserve the natural resources of aggregates and binder, the materials reclaimed from the damaged layers of the pavements maintained are generally reincorporated in the material for new maintenance layers. However, recycling induces some technical challenges. In the case of the Hot mix asphalt (HMA), the most commonly used road construction material, one of the main concerns is ageing. Along with the heterogeneity of the RA properties in stockpiles, it is one of the main factors limiting the recycling rates in HMA. Therefore, the characterisation of ageing through reliable ageing indexes and of its impact on the bitumen physical properties is of paramount importance to improve the recycling techniques. The RILEM TC 237 SIB TG5 inherited a database from the previous work of the RILEM TC 206 ATB TG5 on a protocol for bituminous mixture ageing in laboratory. Taking advantage of these data, the work of the Task Group was first dedicated to a state of the art and an evaluation of the chemical ageing characterization through indexes based on Fourier Transform Infrared Spectroscopy (FTIR). In a second step, an attempt was made, in order to bring out the essential trends of the rheological data with ageing, by using a Huet modified rheological model. Then, exploring the potential of a recently developed method, an interpretation of these trends in terms of asphalt structure is suggested. Finally, possible empirical relationships between the chemical ageing indexes and the rheological parameters are investigated.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:40:04 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899366</guid>
    </item>
    <item>
      <title>Roadway Interface Analysis with A Support Vector Regression Based Linear Prediction Method Using Stepped-Frequency Radar</title>
      <link>https://trid.trb.org/View/1899350</link>
      <description><![CDATA[Ground Penetrating Radar (GPR) is a widely used tool in the management and monitoring of pavement structures. In this paper, we focus on the detection of thin inter-layer debondings between the hot mix asphalt layers of pavement structures. A Stepped-Frequency Radar (SFR) associated with a Support Vector Regression based Linear Prediction (LP-SVR) method is used to detect thin debondings. The performance of SFR with the LP-SVR method is analyzed according to various used frequency bandwidths on the experimental data.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:39:07 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899350</guid>
    </item>
    <item>
      <title>Analysis of Ovalization Measurements on Flexible Airfield Pavement under HWD Dynamic Impulse Load. In : H. Di Benedetto, H. Baaj, E. Chailleux, G. Tebaldi, C. Sauzeat, S. Mangiafico (Eds.), Proceedings of the RILEM International Symposium on Bituminous Materials : ISBM Lyon 2020</title>
      <link>https://trid.trb.org/View/1899349</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 21 Dec 2021 16:39:04 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899349</guid>
    </item>
    <item>
      <title>Interlaminar Mode-I Fracture Characterization Underwater of Reinforced Bituminous Specimens. In : H. Di Benedetto, H. Baaj, E. Chailleux, G. Tebaldi, C. Sauzeat, S. Mangiafico (Eds.), Proceedings of the RILEM International Symposium on Bituminous Materials : ISBM Lyon 2020</title>
      <link>https://trid.trb.org/View/1899348</link>
      <description><![CDATA[]]></description>
      <pubDate>Tue, 21 Dec 2021 16:39:02 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899348</guid>
    </item>
    <item>
      <title>Modeling of fracture in viscoelastic medium using the Thick Level Set approach for application to bituminous materials</title>
      <link>https://trid.trb.org/View/1899332</link>
      <description><![CDATA[Fracture of asphalt concrete (AC) layers is a major mode of deterioration in pavements, whose understanding of the various mechanisms requires the development of theoretical models and numerical tools. In this context, the research focuses on damage and fracture in thermo-viscoelastic materials. Hence, a local damage model is developed based on the principle of effective stresses and the Poynting-Thomson rheological law. The damage criterion considered relies on the elastic energy release rate. This model is then regularized according to the Thick Level Set (TLS) approach. The semi-analytical study of the 1D rod subjected to monotonous direct tension is performed to investigate the ability of the model to mimic the main experimental observations made for AC materials. An algorithm dedicated to the finite element solution of 2D problems is proposed and implemented subsequently in the eXlibris numerical code developed at ECN. The potential of this model to simulate damage and crack growth from initiation to collapse is demonstrated through the example of a viscoelastic beam under three-point bending test loading conditions. The simulations reflect the more or less brittle/ductile nature of the test results observed on AC materials depending on temperature and the loading rate. This work offers a theoretical and numerical basis for future applications in pavement mechanics.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:38:26 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899332</guid>
    </item>
    <item>
      <title>Alternate Method of Pavement Assessment Using Geophones and Accelerometers for Measuring the Pavement Response</title>
      <link>https://trid.trb.org/View/1899319</link>
      <description><![CDATA[Pavement instrumentation with embeddable in-situ sensors has been a feasible approach to determine pavement deteriorations. Determining pavement deflections during the passage of the load is a promising strategy to determine the overall performance of the pavement. There are different devices that apply loads to the pavements and measure the deflection basin, these include static, vibratory or impulse loadings. Most commonly used are the static loading like Benkelman beam and impulse loading like the Falling Weight Deflectometer (FWD). However, these techniques are costly and the measurements are recorded infrequently i.e. once per year or two years. This study focuses on the use of geophones and accelerometers to measure the surface deflections under traffic loading. To develop a method to measure pavement deflections, the sensors have been submitted first to laboratory tests, and then tested in situ, in a full scale accelerated pavement test. In the laboratory, the sensors have been submitted to different types of loading using a vibrating table. These tests were used to determine the noise and sensitivity of the sensors, and then to evaluate their response to signals simulating pavement deflections under heavy vehicles. The sensor response has been compared with measurements of a reference displacement sensor. Different processing techniques have been proposed to correct the measurements from geophones and accelerometers, in order to obtain reliable deflection values. Then, the sensors have been evaluated in a full scale accelerated test, under real heavy axle loads. Tests have been performed at different loads and speeds, and the deflection measurements have been compared with a reference anchored deflection sensor. The main advantage of using accelerometers or geophones embedded in the pavement is to enable continuous pavement monitoring, under real traffic. The sensor measurements could also be used to determine the type of vehicles and their corresponding speeds. The study describes in detail the signal analysis needed to measure the pavement deflections accurately. The measurements of pavement deflection can be then used to analyze the pavement behaviour in the field, and its evolution with time, and to back calculate pavement layer properties.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:37:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899319</guid>
    </item>
    <item>
      <title>Data Compression Approach for Long-Term Monitoring of Pavement Structures</title>
      <link>https://trid.trb.org/View/1899318</link>
      <description><![CDATA[Pavement structures are designed to withstand continuous damage during their design life. Damage starts as soon as the pavement is open to trac and increases with time. If maintenance activities are not considered in the initial design or considered but not applied during the service life, damage will grow to a point where rehabilitation may be the only and most expensive option left. In order to monitor the evolution of damage and its severity in pavement structures, a novel data compression approach based on cumulative measurements from a piezoelectric sensor is presented in this paper. Specifically, the piezoelectric sensor uses a thin film of polyvinylidene fluoride to sense the energy produced by the micro deformation generated due to the application of trac loads. Epoxy solution has been used to encapsulate the membrane providing hardness and flexibility to withstand the high-loads and the high-temperatures during construction of the asphalt layer. The piezoelectric sensors have been exposed to three months of loading (approximately 1.0 million loads of 65 kN) at the French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) fatigue carrousel. Notably, the sensors survived the construction and testing. Reference measurements were made with a commercial conventional strain gauge specifically designed for measurements in hot mix asphalt layers. Results from the carrousel successfully demonstrate that the novel approach can be considered as a good indicator of damage progression, thus alleviating the need to measure strains in pavement for the purpose of damage tracking.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:37:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899318</guid>
    </item>
    <item>
      <title>Finite element modelling of partially saturated asphalt specimens subjected to frost - towards an explanation of winter potholes</title>
      <link>https://trid.trb.org/View/1899296</link>
      <description><![CDATA[This article is related to the development of potholes in bituminous pavements possibly occurring in winter at negative temperature and in presence of pore water in the asphalt concrete (AC) layers. It was shown already that this type of degradation could be due to swelling of the AC pore water. A constitutive law was previously developed to model this phenomenon; the present article deals with its implementation in a finite element (FE) program to evaluate the mechanical effects induced by the propagation of a frost front in a pavement. This novel program handles the coupling between the thermoviscoelastic problem with swelling in AC materials and the heat equation with phase change. First applied to the modelling of characterization tests on partially saturated AC specimens, the developed program has proved to be relevant. Then, to get closer to onsite conditions, an original frost-thaw test was carried out on a bilayer AC structure partially saturated. The test led to the delamination of the two layers during the second frost-thaw cycle. Its modelling showed that the interface rupture was triggered by differential strains and self-stress fields developing in the sample. These results can provide an explanation to the initialisation of the pothole issue.]]></description>
      <pubDate>Tue, 21 Dec 2021 16:36:38 GMT</pubDate>
      <guid>https://trid.trb.org/View/1899296</guid>
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