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 21 for “"Existing Pavement"”.
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Asphalt Perpetual Pavement Design: Utilizing Existing Pavement Systems in Ohio
This thesis explores asphalt perpetual pavement concepts by investigating existing asphalt concrete (AC) pavements in Ohio. In 2010, twenty AC pavement sites were selected as candidates for a forensic investigation in Ohio. Field distress surveys, coring, Falling Weight Deflectometer (FWD), Seismic …
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Dissipated Energy Concepts for HMA Performance: Fatigue and Healing
… relationship allows it to be implemented into a pavement structural (thickness) design procedure. This procedure has the ability to utilize existing pavement response values with mixture properties to generate the PV-Nf relationship validated in this thesis. It also has the future capability of …
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Three-Dimensional Finite Element Analysis to Evaluate Reflective Cracking Potential in Asphalt Concrete Overlays
… can isolate the overlay from underlying existing pavement movements (contraction and curling).
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Pavement management analysis of Hamilton County using HDM-4 and HPMA
… using PMS. HDM-4 and HPMA are used to assess the existing pavement conditions and predict future conditions; estimate fuel consumption; calculate road agency costs and user costs; determine cost-effective maintenance treatment; and suggest optimum utilization of funds. From this study, fuel …
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The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves
… the past few decades, the growing interest in pavement sustainability has led researchers in government agencies, industries, and academia to develop various sustainability rating systems and life-cycle assessment (LCA) tools for roadways and pavements. However, many of the existing pavement …
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Laboratory characterization and field performance of hot in-place recycled mixtures
Hot in-place recycling (HIR) is one of the pavement preservation techniques. HIR can prove to be an economical as well as environmentally sustainable treatment as it recycles in-place aggregates and binder for the new application by adding small amounts of virgin materials (emulsion or virgin …
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Verification of asphalt concrete performance prediction using level 2 and level 3 inputs of mechanistic-empirical pavement design guide for flexible pavements of the state of New Jersey
… verification study of the Mechanistic-Empirical Pavement Design Guide (M-EPDG) using level 2 and level 3 inputs. In addition, the challenges of verification of the predicted performance with the help of field-measured data of existing flexible pavements are also presented. In this study, …
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Estudo de deformação vertical de pavimento para o dimensionamento de recapeamentos
… concerning design of overlays for flexible pavements is presented. The development is based on the expression of surface deflection according to the theory of elasticity for a two-layered system, and with due consideration of empirical correlation between traffic characteristics and …
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Optimization of in-situ tack coat application rate and installation
Interface bonding between pavement layers is a key factor affecting the performance of any pavement structure. Over the years, several studies have been performed to better understand bonding between pavement layers. The first phase of this study was a laboratory assessment, which analyzed …
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High Reclaimed Asphalt Pavement in hot mix asphalt
When old roads have to be replaced, the existing pavement, known as Reclaimed Asphalt Pavement (RAP) is ripped up, milled, and stockpiled and can be used in the creation of new mixes in order to save money and resources. New Jersey state specifications limit the percentage of RAP that can be used …
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Evaluation of subgrade strength and flexible pavement designs for reliability
Reliability is an important factor in flexible pavement design to consider the variability associated with the design inputs. In this study, subgrade strength variability and flexible pavement designs are evaluated for reliability. The effects of weak subgrade on pavement design and performance …
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Use of wicking geotextile to dehydrate road embankments
“Excess water within a pavement structure is the major cause of pavement deteriorations. A roadway is often constructed with soils compacted at the optimum water contents to achieve the best performance. After construction, the soil water content variation is controlled by the ambient environment. …
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Development of Data Analysis Algorithms for Interpretation of Ground Penetrating Radar Data
… in order to reduce rehabilitation costs, pavement engineers need to optimize the rehabilitation procedure, which is achieved by accurately knowing the existing pavement layer thicknesses and localization of subsurface defects. Currently, the majority of departments of transportation (DOTs) …
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Performance Quantification of Interlayer Systems in Flexible Pavements Using Finite Element Analysis, Instrument Response, and Non Destructive Testing
… geocomposite membrane) in different pavement applications. Steel reinforcing netting and geocomposite membrane have been installed at the Virginia Smart Road in four different sections. Ground penetrating radar (GPR) surveys and time domain reflectometer (TDR) validated the …
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Detection And Evaluation Of Exisiting Pavement System With Brick Base
… objectives of this study was to investigate the existing pavement by using Ground Penetrating Radar (GPR) in detecting the brick base and to analyze the performance of pavement system for fatigue and rutting. The results of this study will assist the City of Orlando in removing asphalt layer, …
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Three-dimensional numerical analysis of reflective cracks in airfield pavements
… as the primary overlying material of concrete pavements during rehabilitation because of its inexpensive nature when compared to most Portland cement concrete (PCC) rehabilitation/reconstruction alternatives. In airfield pavements for example, a common technique is to place a HMA concrete …
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Mechanistic characterization of thin asphalt overlays for pavement preservation
… a preservation treatment for rigid and flexible pavements to improve ride quality, extend service life, and reduce noise levels on pavements. However, compared to the conventional methods of mechanistic analysis, analyzing thin AC overlay is complicated as these layers are directly exposed to …
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Investigation of Bond Strength and Watertightness of Asphalt Concrete Wearing Surfaces for Timber Bridge Decks
… were examined in this research study. The existing system, consistent with current timber bridge construction practice, uses a preformed waterproofing membrane placed on a preservative treated wood deck overlaid with a bituminous concrete wearing surface. The second system consists of a …
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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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Quantifying the Service Life and Potential Environmental Benefits of Recycled Asphalt Pavements
In-service pavements require maintenance and rehabilitation (MandR) interventions to keep them in compliance with structural and functional standards. With the increased focus on the sustainability of our roadway systems, it has become important to document the cost and environmental impacts of …
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