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Integration Of A Prototype Wireless Communication System With Micro-Electromechanical Temperature And Humidity Sensor For Concrete Pavement Health Monitoring, Shuo Yang, Keyan Shen, Halil Ceylan, Sunghwan Kim, Daji Qiao, Kasthurirangan Gopalakrishnan 2015 Iowa State University

Integration Of A Prototype Wireless Communication System With Micro-Electromechanical Temperature And Humidity Sensor For Concrete Pavement Health Monitoring, Shuo Yang, Keyan Shen, Halil Ceylan, Sunghwan Kim, Daji Qiao, Kasthurirangan Gopalakrishnan

Civil, Construction and Environmental Engineering Publications and Papers

In recent years, structural health monitoring and management (SHMM) has become a popular approach and is considered essential for achieving well-performing, long-lasting, sustainable transportation infrastructure systems. Key requirements in ideal SHMM of road infrastructure include long-term, continuous, and real-time monitoring of pavement response and performance under various pavement geometry-materials-loading configurations and environmental conditions. With advancements in wireless technologies, integration of wireless communications into sensing device is considered an alternate and superior solution to existing time- and labor-intensive wired sensing systems in meeting the requirements of an ideal SHMM. This study explored the development and integration of a wireless communications sub-system ...


Design And Implementation Of Pavemon: A Gis Web-Based Pavement Monitoring System Based On Large Amounts Of Heterogeneous Sensors Data, Salar Shahini Shamsabadi 2015 Northeastern University

Design And Implementation Of Pavemon: A Gis Web-Based Pavement Monitoring System Based On Large Amounts Of Heterogeneous Sensors Data, Salar Shahini Shamsabadi

Civil Engineering Master's Theses

A web-based PAVEment MONitoring system, PAVEMON, is a GIS oriented platform for accommodating, representing, and leveraging data from a multi-modal mobile sensor system. Stated sensor system consists of acoustic, optical, electromagnetic, and GPS sensors and is capable of producing as much as 1 Terabyte of data per day. Multi-channel raw sensor data (microphone, accelerometer, tire pressure sensor, video) and processed results (road profile, crack density, international roughness index, micro texture depth, etc.) are outputs of this sensor system. By correlating the sensor measurements and positioning data collected in tight time synchronization, PAVEMON attaches a spatial component to all the datasets ...


Mechanical Behavior Of Grouted Sands, Ryan C. Ortiz 2015 University of Kentucky

Mechanical Behavior Of Grouted Sands, Ryan C. Ortiz

Theses and Dissertations--Civil Engineering

Grouting techniques have been in used for many years, but several new grout materials have surfaced in recent decades that have re-defined the boundaries of the limitations of grouting programs. Typically these applications are used for seepage control in earthen impoundments, but strength of these earthen impoundments should be considered where there is potential for movement in the grouted soil mass. This study investigated initial conditions that could affect grout application effectiveness. The initial conditions in question were soil grain size and in situ moisture content. Two grouts were used, ultrafine and acrylate, and variations in pure grout properties were ...


Miniature Cone Penetration Test On Loose Sand, Sepideh Damavandinejad Monfared 2014 The University of Western Ontario

Miniature Cone Penetration Test On Loose Sand, Sepideh Damavandinejad Monfared

University of Western Ontario - Electronic Thesis and Dissertation Repository

Considering the difficulties associated with preparing loose sand samples in large calibration chambers and wide area of research on the behavior of loose sands, miniature calibration chamber experiments are used to perform cone penetration tests on soils in different states. A miniature cone calibration chamber has been designed and developed in this study. Nineteen tests have been performed on Ottawa sand and the results are compared to the available data in the literature. The accuracy of the results is validated by comparing the results with the suggested rate for the cone resistance in sands in literature. More specifically, results are ...


Development And Use Of Moisture-Suction Relationships For Geosynthetic Clay Liners, Jacob Law Risken 2014 California Polytechnic State University - San Luis Obispo

Development And Use Of Moisture-Suction Relationships For Geosynthetic Clay Liners, Jacob Law Risken

Master's Theses and Project Reports

A laboratory test program was conducted to determine the moisture-suction relationships of geosynthetic clay liners (GCLs). Moisture-suction relationships were determined by combining suction data from pressure plate tests, contact filter paper tests, and relative humidity tests, then fitting water retention curves (WRCs) to the data. WRCs were determined for wetting processes and drying processes in terms of gravimetric moisture content and volumetric moisture content.

The effects of GCL type, hydration solution, wet-dry cycles, and temperature on the moisture-suction relationships were analyzed. The three GCLs of the test program consisted of configurations of woven and nonwoven geotextiles reinforced with needlepunched fibers ...


Greenhouse Gas Emission Analysis For Heated Pavement System, Weibin Shen, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan 2014 Iowa State University

Greenhouse Gas Emission Analysis For Heated Pavement System, Weibin Shen, Kasthurirangan Gopalakrishnan, Sunghwan Kim, Halil Ceylan

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Anthropogenic greenhouse gas (GHG) emissions have become significant environmental indicators in analyzing the comparative environmental impacts of conventional and newly developed alternative systems or techniques. Life Cycle Assessment (LCA) is considered an accepted and systematic methodology to calculate the amount of carbon released from all the processes of a system/technique, helping users select the best environmental-friendly alternative. The use of automated heating based snow removal systems is gaining attention as an alternative strategy to traditional ice and snow removal practices such as the use of anti-icing chemicals and snowplowing vehicles. Most previous studies on heated pavement systems have focused ...


Smart Airport Pavement Instrumentation And Health Monitoring, Shuo Yang, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim 2014 Iowa State University

Smart Airport Pavement Instrumentation And Health Monitoring, Shuo Yang, Halil Ceylan, Kasthurirangan Gopalakrishnan, Sunghwan Kim

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Realistic characterization of pavement layer properties and responses under in-situ field conditions is critical for accurate airport pavement life predictions, planning pavement management activities as well as for calibration and validation of mechanistic-based pavement response prediction models. The recent advancements in Micro-Electro-Mechanical Sensor (MEMS)/Nano-Electro-Mechanical Sensor (NEMS) technologies and wireless sensor networks combined with efficient energy scavenging paradigms provide opportunities for long-term, continuous, real-time response measurement and health monitoring of transportation infrastructure systems.

This paper presents a summary review of some recent studies that have focused on the development of advanced smart sensing and monitoring systems for highway pavement system ...


Cost Comparison Of Alternative Airfield Snow Removal Methodologies, Pritha Anand, Halil Ceylan, Konstantina Gkritza, Peter Talor, Vasiliki Dimitra Pyrialakou, Sunghwan Kim, Kasthurirangan Gopalakrishnan 2014 Iowa State University

Cost Comparison Of Alternative Airfield Snow Removal Methodologies, Pritha Anand, Halil Ceylan, Konstantina Gkritza, Peter Talor, Vasiliki Dimitra Pyrialakou, Sunghwan Kim, Kasthurirangan Gopalakrishnan

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Maintaining operational safety and status of airport runways during snowfall events is a challenging issue that many airports are grappling with. Ice and snow impacts on transportation infrastructure systems add significant costs to the American economy in the form of snow removal, damaged pavement and lost productivity due to travel delays. Most transport category aircraft are prohibited from operating on runways covered by untreated ice or by more than ½ inch of snow or slush. Hence, it is imperative that both small and large airports maintain operational status during snowfall events to support the existing operations. Conventional ice and snow ...


Evaluation Of Volatile And Semi-Volatile Organic Compounds Potentially Associated With The Gas Shale Fracturing Process In The Fayetteville And Marcellus Shale, Karl Albert Oetjen 2014 Syracuse University

Evaluation Of Volatile And Semi-Volatile Organic Compounds Potentially Associated With The Gas Shale Fracturing Process In The Fayetteville And Marcellus Shale, Karl Albert Oetjen

Theses - ALL

With the recent growth of the natural gas industry coupled with technological advancements, gas shale fracturing has become an effective and highly profitable method for natural gas production. Unlike conventional natural gas extraction which may require vertical fracturing, gas shale fracturing relies on a method known as horizontal fracturing to remove gas trapped within the impermeable facies. Compared to vertical fracturing, horizontal fracturing requires larger amounts of fluids to be injected downhole under high pressure. These fracturing fluids can contain high concentrations of petroleum hydrocarbons with known adverse health effects. Due to the large volumes used, the potential for groundwater ...


International Conference On Short And Medium Span Bridges, Calgary, July 15-18, 2014, Barry A. Palynchuk PhD, Christophe Deniaud PhD 2014 McMaster University

International Conference On Short And Medium Span Bridges, Calgary, July 15-18, 2014, Barry A. Palynchuk Phd, Christophe Deniaud Phd

Barry A. Palynchuk PhD

The Jean River near Wabush, Labrador is crossed by two railways and an access road by twin 6m diameter culverts . They are heavily strutted inside their barrels to counteract some significant shape deformation, and are deemed not suitable to sustain the increased volume of rail traffic serving the development of the Bloom Lake mines. The owner requested the design and construction of a replacement scheme for an additional design life of 20 years with a time sensitive schedule for completion of the work during the 2013 construction season. This VE concept for the design of live load relief spans over ...


Design And Construction Of Rail And Road Live Load Relief Spans Over Existing Culverts, Barry A. Palynchuk PhD, Christophe Deniaud PhD 2014 McMaster University

Design And Construction Of Rail And Road Live Load Relief Spans Over Existing Culverts, Barry A. Palynchuk Phd, Christophe Deniaud Phd

Barry A. Palynchuk PhD

DESIGN AND CONSTRUCTION OF RAIL AND ROAD LIVE LOAD RELIEF SPANS OVER EXISTING CULVERTS


Thermal Numerical Analysis Of Vertical Heat Extraction Systems In Landfills, Michael Thomas Onnen 2014 California Polytechnic State University - San Luis Obispo

Thermal Numerical Analysis Of Vertical Heat Extraction Systems In Landfills, Michael Thomas Onnen

Master's Theses and Project Reports

An investigation was conducted to determine the response of landfills to the operation of a vertical ground source heat pump (i.e., heat extraction system, HES). Elevated landfill temperatures, reported various researchers, impact the engineering performance of landfill systems. A numerical model was developed to analyze the influence of vertical HES operation on landfills as a function of climate and operational conditions.

A 1-D model of the vertical profile of a landfill was developed to approximate fluid temperatures in the HES. A 2-D model was then analyzed over a 40 year time period using the approximate fluid temperatures to determine ...


Stability, Erosion, And Morphology Considerations For Sustainable Slope Design, Isaac Andres Jeldes Halty 2014 University of Tennessee - Knoxville

Stability, Erosion, And Morphology Considerations For Sustainable Slope Design, Isaac Andres Jeldes Halty

Doctoral Dissertations

The construction of more natural and sustainable earth slopes requires the consideration of erosion and runoff characteristics as an integral part of the design. These effects not only result in high costs for removal of sediment, but also a profound damage to the ecosystem. In this dissertation, innovative techniques are developed such that more natural appearing slopes can be designed to minimize sediment delivery, while meeting mechanical equilibrium requirements. This was accomplished by: a) examining the fundamental failure modes of slopes built with minimum compaction (FRA) to enhance quick establishment of forest, b) investigating the geomechanical and erosion stability of ...


Geotechnical Report For Appalachian Community Health And Disaster Readiness: Interprofessional Practice, Ali Leib 2014 University of Tennessee, Knoxville

Geotechnical Report For Appalachian Community Health And Disaster Readiness: Interprofessional Practice, Ali Leib

University of Tennessee Honors Thesis Projects

No abstract provided.


Design And Economic Analysis Of A Geothermal Vertical Coupled Heat Pump System For The University Of Tennessee, Knoxville Campus, Joseph W. Birchfield IV, Will Kester, Jason Cho 2014 University of Tennessee-Knoxville

Design And Economic Analysis Of A Geothermal Vertical Coupled Heat Pump System For The University Of Tennessee, Knoxville Campus, Joseph W. Birchfield Iv, Will Kester, Jason Cho

University of Tennessee Honors Thesis Projects

No abstract provided.


Finite Difference Modeling Of Surface-~Wave Scattering For Shallow Cavity Detection, Heston Travis Norcott 2014 University of Nevada, Las Vegas

Finite Difference Modeling Of Surface-~Wave Scattering For Shallow Cavity Detection, Heston Travis Norcott

UNLV Theses/Dissertations/Professional Papers/Capstones

Data collection and analysis of scattering of Rayleigh-type surface waves are investigated for locating shallowly buried cavities. Surface-based seismic experiments conducted by others at the University of Nevada, Las Vegas (UNLV) Engineering Geophysics Test Site (EGTS) demonstrate scattering of Rayleigh waves caused by buried empty barrels (essentially air-filled cavities). The interpretation of the data is complicated by factors such as the presence of a high-velocity geologic layer just below the cavity.

This research uses a finite-difference seismic wave propagation code to compute time histories for a model that represents the Engineering Geophysics Test Site. By adding cavities to a background ...


Multimode Rayleigh Wave Profiling By Hybrid Surface And Borehole Methods, Shibin Lin, Jeramy C. Ashlock 2014 Iowa State University

Multimode Rayleigh Wave Profiling By Hybrid Surface And Borehole Methods, Shibin Lin, Jeramy C. Ashlock

Civil, Construction and Environmental Engineering Publications and Papers

To improve the accuracy of shallow seismic shear wave velocity profiling, we propose a minimally invasive hybrid surface-and-borehole method that enhances the detection of higher modes of Rayleigh wave dispersion data. The new method combines techniques from the multichannel analysis of surface waves and multichannel simulation with one receiver (MSOR) methods to record components of Rayleigh wave motion at the surface as well as at shallow depths within the soil mass. The performance of the proposed method is demonstrated through computational and experimental studies. We show that individual modes of Rayleigh waves can exhibit different dominant depths at which their ...


Drilled Shaft Design & Construction-Integrity Testing Issues, Mir A. Zaheer, David Latka 2014 Indiana Department of Transportation

Drilled Shaft Design & Construction-Integrity Testing Issues, Mir A. Zaheer, David Latka

Purdue Road School

This presentation will provide an overview of the design and construction of drilled shafts in Indiana, including construction monitoring issue, discussion of CSL, PIT and TIP testing, and comparisons with cores taken.


Static And Seismic Performance Of Geosynthetics-Strengthened Pile Foundations, Ahmed M. Taha 2014 The University of Western Ontario

Static And Seismic Performance Of Geosynthetics-Strengthened Pile Foundations, Ahmed M. Taha

University of Western Ontario - Electronic Thesis and Dissertation Repository

Geosynthetic reinforcement in earth structures has been used extensively over the last two decades. Extensive research has been carried out to investigate solutions to enhance the lateral stability of pile foundations. This research is motivated by the need to install piles in sites characterized by soft subsurface soil conditions, and often times, in seismic active areas. This research work explores an innovative use of geosynthetics to enhance the lateral performance of pile foundations. The static and seismic soil-structure-interaction behaviors of geosynthetics-reinforced pile foundation systems were evaluated using a series of reduced scale physical model tests performed on a shaking table ...


Compact Planar Ultra-Wideband Antennas For Ground Penetrating Radar, Ming Li 2014 Northeastern University

Compact Planar Ultra-Wideband Antennas For Ground Penetrating Radar, Ming Li

Electrical Engineering Dissertations

Compact and low-cost Ground Penetrating Radar (GPR) systems are attractive in detecting pavement layers and subsurface defects such as rebar corrosion at driving speed. Ultra-wideband (UWB) antennas are key elements for the high-speed operation of the air-coupled GPR systems. This thesis studies and develops a number of planar antennas that have been manufactured with low-cost printed circuit board (PCB) technology. It also presents a brief methodology for the design process in order to frame the context and boundary conditions of the antenna problem, and to satisfy the regulatory specifications such as FCC compliance.

A variety of compact low-profile UWB antennas ...


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