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 19 of 19 for “"Pavement distress"”.
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Deploying drones for autonomous detection of pavement distress
… are crucial preventative measures against pavement distress formation that can lower the monetary burden of repairs. Yet state of the art road inspection techniques still employ technicians to perform distress measurements manually. These methods are often too costly, time-consuming, …
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Balanced asphalt mix design and pavement distress predictive models based on machine learning
… the ability of asphalt mixture to resist pavement distress, such as rutting, cracking, IRI (international roughness index), etc., is still the trend of future asphalt mix design. The service life of asphalt pavement mainly depends on the properties of the asphalt mixture. Whether asphalt …
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Improvements on Manual Pavement Distress Data Collection to Conform to State and Federal Requirements
The purpose of this study is to align the pavement distress data of the state of New Mexicos pavement management system with that of the federal highway system, the Highway Performance Monitoring System (HPMS), while concurrently reducing variability, increasing data consistency, and providing a …
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Sensitivity of Distress Rate to Observed Distress Levels
… of Transportation (NMDOT) uses a composite pavement condition index to identify and rank roads for budgeting and scheduling repairs. NMDOT uses an index number called the Pavement Serviceability Index or PSI. A key component of this index number is the Distress Rate (DR) which is comprised …
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Low-cost deep learning UAV and Raspberry Pi solution to real time pavement condition assessment
… to the autonomous condition assessment of pavement is proposed using deep learning, Unmanned Aerial Vehicle (UAV) and Raspberry Pi tiny computer technologies, which makes roads maintenance and renovation management more efficient and cost effective. A comparison study was conducted to …
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The Development of Initial Asphalt Mixture Acceptance Criteria Using the SCB test and the I-FIT Test
<p>Cracking has become the primary asphalt pavement distress in Arkansas. Arkansas along with other states have implemented a test to measure rutting resistance. This paper presents research to implement a cracking resistance test to further modify the Superpave volumetric asphalt mixture design …
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Design and Construction of Pavements in Cold Regions: State of the Practice
… the United States. The penetration of frost into pavement structures can lead to differential frost heave during winter and thaw weakening during spring. Both of these damage mechanisms lead to premature pavement distress, structural deterioration, and poor ride quality. Because the availability …
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A framework for assessing and improving quality of data from visual evaluation of asset conditions
… the data. While manual assessments for surface distresses are widely used, they still have the stigma that the results are based on subjective judgments by the individual evaluators. This thesis describes the Data Quality Assessment & Improvement Framework that has been developed to measure, and …
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Wheel Path Wandering Based On Field Data
<p>The position and width of wheel path on a pavement lane is an important consideration in conducting pavement distress survey, especially for distinguishing longitudinal cracking from fatigue cracking. Currently, the widely used wheel path definition is derived from the LTPP distress manual with …
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Adjustment factors for MEPDG pavement responses considering three- dimensional analysis and wide-base tire
The Mechanistic-Empirical Pavement Design Guide (MEPDG) provides a superior methodology as compared to its predecessor in the design and analysis of pavement structures. The mechanistic (MEDPG analysis) calculates critical pavement responses due to pavement-tire interactions. On the other hand, the …
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Integrated transportation monitoring system for both pavement and traffic
In the passing decades, the monitoring of pavements and passing vehicles was developed vigorously with the growth of information and sensing technology. Pavement monitoring is an essential part of pavement research and plays an important role in transportation system. At the same time, the …
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Non-contact Methods for Detecting Hot-mix Asphalt Nonuniformity
… in Hot Mix Asphalt (HMA) induces accelerated pavement distress(es) that can reduce a pavement's service life up to 50%. Quality Assurance procedures should detect and quantify the presence of this problem in newly constructed pavements. Current practices are usually based on visual inspections …
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Early-age behavior of CRCP and its implications for long-term performance
Continuously Reinforced Concrete Pavement (CRCP) is the most widely used rigid pavement type in Texas. The advantages of CRCP over other rigid pavement types include the absence of transverse contraction joints. With the increased use of CRCP, a vast amount of information has been collected on …
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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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Assessment of the Tube Suction Test for Identifying Non-Frost-Susceptible Soils Stabilized with Cement
Frost heave is a primary mechanism of pavement distress in cold regions. The distress exhibited is dependent on the frost susceptibility of the soil within the depth of frost penetration, the availability of subsurface water, and the duration of freezing surface temperatures. Cement stabilization …
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Mechanistic-Empirical Evaluation of Pavement Damage and Cost Attributed to Overweight Single-Trip and Multi-Trip Scenarios in Nevada
… resources tomaintain the conditions of roadway pavements at an acceptable level.This dissertation presents an approach that allows the estimation of pavementdamage associated costs (PDAC) attributable to OW vehicle moves. The PDAC can beestimated for different OW axle loadings and configurations …
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Elaboración de un indicador para la evaluación funcional de pavimentos en terminales portuarias de contenedores
… this thesis is to define an index for concrete pavement functional condition evaluation in port container terminals. The proposed index, calculated through a mathematical equation, enables the classification of different terminal areas based on two factors; distress evaluation and area …
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On Cross-Anisotropy of Flexible Pavement Layer Materials for Improved Pavement Responses
<p>Pavement layer materials are typically assumed to be isotropic in determining pavement responses, such as stress and strain. The main benefit of the isotropic assumption is that stiffness defined by modulus of elasticity (E-value) is equal in all directions. In reality, stiffness along vertical …