Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Rut Depth"”.
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Flexible Pavement Rut Depth Modeling For Different Climate Zones
<p>Pavement rutting is one of the most important types of pavement distress that affect road safety and ride quality. Therefore, the primary objective of this study was to develop pavement rutting empirical models for different climate zones to predict pavement rutting on granular base based on …
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Evaluating Pavement Response and Performance with Different Simulative Tests
… under ALF, MMLS 3 and APA tests, in terms of rut depth, strain response, seismic stiffness, and contact stress using both experimental and numerical simulation results. Test slabs extracted from the ALF test lanes, are trafficked with the MMLS3 under comparable environmental conditions at …
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Pavement management analysis of Hamilton County using HDM-4 and HPMA
… treatment may cost less, but does not improve rut depth, while an overlay improves the roadway including structural cracking and rut depth. In Tennessee, HPMA cost-effective optimization analysis is available to adequately distribute the available funds.
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Geosynthetic stabilization of unpaved roads on soft ground : a field evaluation
… on the relationship between number of passes and rut depth. Performance of the test sections was evaluated from measurements of rut depth, base course thickness, base course deformations, geosynthetic strain, and deformed profile of the geosynthetic, with increasing number of vehicle passes. …
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Use of the Clegg Impact Soil Tester to Access Rutting Susceptiblity of Cement-Treated Base Material Under Early Trafficking
… gain has occurred can lead to marring or rutting of the treated layer. The specific objectives of this research were to examine the correlation between Clegg impact values (CIVs) determined using a heavy Clegg impact soil tester and rut depths measured in newly constructed CTB and …
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Terrain and Vehicle-Terrain Sensing and Estimation in Real-Time for Use in Autonomous Vehicles
… In the area of direct sensing the tire rut depth left behind by a tire is measured using a system of two Intel RealSense D405 stereo cameras. The rut depth can be assumed to be the same as the tire sinkage in this application and is then used to get the tire entry angle. The tire entry …
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Central Tire Inflation for Agricultural Vehicles
… a 2% improvement in traction, a 10% decrease in rut depth, and an improvement in cone index in the top 15 cm (6 in) of soil.
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Laboratory Performance Evaluation of SMA in Oklahoma
… is to determine if SMA mixtures have better rutting performance than S-4 mixes made with the same PG grade of binder. Different SMA and S-4 mixtures were collected from different parts of Oklahoma. All mixtures were made with PG 76-28 asphalt cement. To evaluate the performance properties of …
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Development of a rapid test to determine moisture sensitivity of HMA (Superpave) mixtures
… lower temperatures whereas dry tests show high rut depth at higher temperatures. The HWTD results show improvement in the performance by the use of anti-stripping agents at later stage. Further studies should be carried out using HWTD to relate number of passes for stripping inflection point …
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Performance Analysis of Airport Flexible Pavements Subjected to New Generation Aircraft
… early-life structural responses are related to rutting performance. The NAPTF 1-inch surface upheaval pavement failure criteria did not yield consistent rut depths. A functional failure criteria (limiting rut depth at desired traffic level) is proposed. A 5-inch thick AC surface layer is not …
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Comparison of 19mm Superpave and Marshall Base II mixes in West Virginia
… Pavement Analyzer (APA) was used to evaluate rutting performance of gyratory compacted samples in the laboratory. The statistical analysis of rut depth results indicated there is not enough evidence to conclude there is a significant difference between the Marshall and Superpave mix design …
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In-Situ Behavior of Geosynthetically Stabilized Flexible Pavement
… Other measurements such as in-situ stresses, rut depth, and subsurface profiling (using ground penetrating radar) support the conclusion of the development of a transition layer.
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Life cycle cost analysis of asphalt and concrete pavements
… used for the base case scenario, and the allowed rut depth is 3.5 cm. As was to be expected, a flexible pavement is more suitable for lower volumes of traffic, and with increased traffic, concrete pavements are more competitive. Test results show that when traffic is around 14000 veh/day/lane, …
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Prediction of permanent deformations in asphalt concrete using the mechanistic-empirical pavement design guide
Permanent deformations, or rutting, are internationally considered to be one of the most serious distress mechanisms in asphalt pavements. Deterioration modeling is an important tool for performance prediction and diagnostics of pavements. The Mechanistic-Empirical Pavement Design Guide (M-E PDG) …
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Asphalt binder and mixture performance using Batu Pahat soft clay as modifier
… It has also the lowest susceptibility for rutting and the temperature susceptibility. In addition, microstructure examinations of the asphalt binders were then achieved by using scanning electron microscopy, hence; images displayed that soft clay particles distributed uniformly in the …
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Effects of basecourse saturation on flexible pavement performance.
… strains in the asphaltic layer and increased rutting leading to cracking of the surface layer. To obtain a physical and quantitative understanding of the deformation characteristics of saturated granular basecourse materials and the associated failure mechanisms of the pavement structure, …
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Effects of Coarse Aggregate Morphological Characteristics on Mechanical Performance of Stone Matrix Asphalt
… failure, and the seismic modulus difference. The rutting performance parameters include |E*|/sin φ, flow number, flow number slope, rut depth and creep slope. For the third objective, different coarse aggregate fractions from different quarries in Virginia were analyzed using the improved FTI …
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Characterization of traffic load and local calibration of the MEPDG for New Mexico
… distress data rather than actual measurements of rut depth and crack length over the past years. Instead of using these 29 sections, only 11 sections from the Long Term Pavement Performance (LTPP) database located in New Mexico are used for local calibration. The permanent deformation, alligator …
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Asphalt mixture evaluation using performance space diagrams, digital image correlation, and discrete element modeling
… fracture energy and high temperature Hamburg rut depth on a single chart akin to the failure assessment diagram in metals. DIC strain fields were evaluated using the proposed DIC fracture process zone (FPZ) size measurement to determine the average strain localization radius generated in front …
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Optimization of asphalt concrete mix design to control cracking and rutting potential
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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