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 42 for “"Maintenance and Rehabilitation"”.
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Optimal investment policies for maintenance and rehabilitation of highway pavements
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1984.
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Developing Condition-Based Triggers for Bridge Deck Maintenance and Rehabilitation Treatments
… deficiencies in both their structural condition and functionality. In an effort to improve the condition of bridges, highway agencies continually seek effective and efficient approaches to maintenance and rehabilitation (M&R) treatments for their bridges. However, one drawback to new approaches …
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Co-Location Decision Tree for Enhancing Decision-Making of Pavement Maintenance and Rehabilitation
… management system (PMS) is a valuable tool and one of the critical elements of the highway transportation infrastructure. Since a vast amount of pavement data is frequently and continuously being collected, updated, and exchanged due to rapidly deteriorating road conditions, increased …
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Data-driven pavement maintenance and rehabilitation strategies for a new state route prioritization system
… of pavement performance within the network and adheres to both the MAP-21 and the FAST Act, the current model has not been updated in nearly 10 years. Because the existing model is a probabilistic model, the prediction power of the model suffers without the use of current data. Additionally, …
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Optimizing sequential decisions under measurement and forecasting uncertainty : application to infrastructure inspection, maintenance and rehabilitation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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Impact of budget uncertainty on network-level pavement condition : a robust optimization approach
… usually face budget uncertainty for pavement maintenance and rehabilitation activities due to limitation in resources and changes in government policies. Highway agencies perform maintenance planning for the pavement network commonly based on the nominal available budget without taking the …
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Development of a pavement life cycle assessment tool for airfield rehabilitation strategies
The demand to provide more sustainable facilities and infrastructure has increased over the past ten years. The ability to measure and quantify the environmental impacts of infrastructure projects like life cycle costs is in higher demand. Life cycle assessment (LCA) studies/tools are developed for …
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Laboratory evaluation of cracking in asphalt concrete
… distresses in asphalt concrete leading to high maintenance and rehabilitation costs throughout the nations pavement infrastructure. Asphalt concrete is a three phase, heterogeneous composite consisting of aggregate, mastic, and air voids. Crack initiation, crack path and propagation are not well …
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Design of a robotic water-pipe rehabilitation
Corrosion in water pipeline causes leak and forms tubercle at the vicinity of leaks. Various in-pipe robots have been developed in recent years for locomotion and inspection along the pipeline. Not much focus is put on in-pipe operations such as pipe maintenance and rehabilitation. This thesis …
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Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods
… recycling has been utilized in the pavement maintenance and rehabilitation activities. Three types of in-place recycling technologies have been introduced since the late 70’s: hot-in-place recycling (HIR), cold-in-place recycling (CIR), and full-depth reclamation (FDR). The use of in-place …
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Outsourcing transportation infrastructure maintenance : a theoretical approach with application to JR East
In transportation agencies, how to reduce maintenance and operation cost is one of the biggest and most common concerns, because their revenue is not expected to increase drastically in the future. One of the solutions undertaken nowadays is contracting out and utilizing contractors' efficiency for …
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Seismic Tomography for the Integrity Assessment of Earthen Dams and Levees.
… an ongoing safety inspection, monitoring, maintenance and rehabilitation program. This research examines the use of a non-invasive geophysical seismic method to provide additional information where the usual visual inspection is insufficient and the comboring investigation is not an option. …
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Assessing the economic value of using structural health monitoring systems on South African bridges by studying the Ermelo-Richards Bay Freight Railway line
There is a need for appropriate tools and techniques to undertake the vast task of sound repair, maintenance and rehabilitation of concrete infrastructure which is deemed to be deteriorating at unacceptable rates. Low economic growth predictions lead to limited budgets and a deferring of …
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In-situ assessment of concrete bridge decks and pavements using stress-wave based methods
… infrastructure of United States is aging and deteriorating. Accurate assessment the condition of concrete infrastructure is critical for its maintenance and rehabilitation. Stress-wave based methods, including ultrasonic surface wave (USW) and impact echo (IE), are becoming popular for …
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Evaluating and updating the Kansas Department of Transportation’s lane closure guide in the Kansas City metropolitan area using Traffic Management Center data
Each year maintenance and rehabilitation occur on interstates and highways to repair damage, improve rideability, and increase safety. To perform many of these activities a short or long-term work zone is required. However, short and long-term work zones can have significant impacts on traffic …
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Improving network pavement performance management using machine learning
… in people’s daily life. With limited funding and increasing demand, it is critical for transportation agencies to maintain the condition of the highway network cost-effectively. This necessitates the development of sound network pavement performance models and optimization approaches to select …
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Determination of Optimum Tack Coat Application Rate for Geocomposite Membrane Use in Roads and Overlaid Bridge Decks
… the United States civil infrastructure, bridges and roads, have deteriorated in the past two decades at an accelerated rate and are in need of maintenance and rehabilitation. Geosynthetics may have the potential to provide a long-term solution to some of the problems that are present in these …
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Preliminary Study of Highway Pavement and Materials
… covered (a) the effects of in-place air voids and other factors on fatigue cracking using Long-Term Pavement Performance data, (b) fracture properties of asphalt concrete in a semicircular bend (SCB) test using a noncontact camera and crosshead movement, and (c) hot applied …
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A framework for the evaluation of the structural safety of existing concrete gravity dams
Addressing the aging and deterioration of dams is a relatively new challenge in the dam engineering field in South Africa. The average life expectancy of a dam is approximately 50 years, but they can normally be used for much longer periods than this. Maintenance and rehabilitation are vital to …
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Life Cycle Assessment of Sustainable Road Pavements: Carbon Footprinting and Multi-attribute Analysis
… of a road project are still considered as stand-alone evaluations, an added value. Very little has been done to integrate environmental impacts as a part of pavement management systems and other decision support tools to choose between different strategies. In this way, being awarded with a …
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