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9,142 full-text articles. Page 8 of 271.

Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes 2019 University of Arkansas, Fayetteville

Tension Splitting Strength Of Bcsa Concrete Cylinders, Andrew Steven Deschenes

Civil Engineering Undergraduate Honors Theses

The focus of this research was to compare the tension splitting strength (TSS) of belitic calcium sufloaluminate (BCSA) cement concrete to tensile strength predicted by the American Concrete Institute (ACI) and to similarly proportioned portland cement (PC) concrete. BCSA is a rapid-setting cement with higher early strength, higher ettringite content, and lower calcium silicate hydrate (C-S-H) content than PC. PC and BCSA cement concrete cylinders were broken at different ages in both uniaxial compression and TSS. It was found that BCSA had a similar TSS to both the ACI prediction and PC TSS, but the results require further testing for ...


Streamflow Prediction In Ungauged Basins Located Within Data-Scarce Regions, Mohammadhossein Alipour 2019 University of Central Florida

Streamflow Prediction In Ungauged Basins Located Within Data-Scarce Regions, Mohammadhossein Alipour

Electronic Theses and Dissertations

Preservation and or restoration of riverine ecosystem requires quantification of alterations inflicted by water resources development projects. Long records of streamflow data are the first piece of information required in order to enable this analysis. Ungauged catchments located within data-scarce regions lack long records of streamflow data. In this dissertation, a multi-objective framework named Streamflow Prediction under Extreme Data-scarcity (SPED) is proposed for streamflow prediction in ungauged catchments located within large-scale regions of minimal hydrometeorologic observation. Multi-objective nature of SPED allows for balancing runoff efficiency with selection of parameter values that resemble catchment physical characteristics. Uncertain and low-resolution information are ...


Applications Of Deep Learning Models For Traffic Prediction Problems, Rezaur Rahman 2019 University of Central Florida

Applications Of Deep Learning Models For Traffic Prediction Problems, Rezaur Rahman

Electronic Theses and Dissertations

Deep learning coupled with existing sensors based multiresolution traffic data and future connected technologies has immense potential to improve traffic operation and management. But to deal with complex transportation problems, we need efficient modeling frameworks for deep learning models. In this study, we propose two different modeling frameworks using Deep Long Short-Term Memory Neural Network (LSTM NN) model to predict future traffic state (speed and signal queue length). In our first problem, we present a modeling framework using deep LSTM NN model to predict traffic speeds in freeways during regular traffic condition as well as under extreme traffic demand, such ...


How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams 2019 University of Mississippi

How Moisture Content Levels And Packing Density In Soil Affect Crude Oil Spreads, Shaylin N. Williams

The University of Mississippi Undergraduate Research Journal

Crude oil spills are one of the most destructive disasters that can occur, and they are extremely difficult to recover from. Many studies focus on what can be done to clean these crude oil spills, but more research should be focused on means of prevention. Currently, very little is known about how the moisture content levels and the packing efficiency of soil can affect an oil spill. These two factors alone can offer a variety of information to environmental agencies, manufacturers, and refineries. Through utilization of a chemical engineering lab, a recording mechanism, and ImagePro software, data was collected and ...


Wastewater Pipe Consequence Of Failure Model For Risk-Based Asset Management Using Analytic Hierarchy Process, Greta Vladeanu, John Matthews 2019 Pure Technologies

Wastewater Pipe Consequence Of Failure Model For Risk-Based Asset Management Using Analytic Hierarchy Process, Greta Vladeanu, John Matthews

John C. Matthews

Risk-based asset management focuses on prioritizing the most critical assets by evaluating their risk of failure. A typical way to determine the risk of failure is by assessing the asset’s likelihood of failure and its consequence of failure. The goal of this paper is to present a consequence-of-failure model using a weighted-sum multicriteria decision-making method to evaluate the economic, social, and environmental consequences of wastewater pipe failure. The model incorporates 14 factors consisting of pipe characteristics and demographic parameters arranged into a hierarchical model to determine one final consequence-of-failure score. The analytic hierarchy process (AHP) was used to determine ...


Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, Abdul Salam, Syed Shah 2019 Purdue University

Urban Underground Infrastructure Monitoring Iot: The Path Loss Analysis, Abdul Salam, Syed Shah

Faculty Publications

The extra quantities of wastewater entering the pipes can cause backups that result in sanitary sewer overflows. Urban underground infrastructure monitoring is important for controlling the flow of extraneous water into the pipelines. By combining the wireless underground communications and sensor solutions, the urban underground IoT applications such as real time wastewater and storm water overflow monitoring can be developed. In this paper, the path loss analysis of wireless underground communications in urban underground IoT for wastewater monitoring has been presented. It has been shown that the communication range of up to 4 kilometers can be achieved from an underground ...


Restaurant Design Along Route 66, Katie Buckner, Wyatt Roberts 2019 Carroll College

Restaurant Design Along Route 66, Katie Buckner, Wyatt Roberts

Carroll College Student Undergraduate Research Festival

Route 66 through is a pipeline of social and economic gain for many cities across the United States including Flagstaff, Arizona. The development of small businesses along the highway brings significant infrastructure along with social and environmental impacts to the local residents and the tourists traveling near and far. Trapper Peak Engineering has been tasked with the opportunity to develop property along the highway with the intent of implementing a new restaurant to bring social and economical contributions to the city. Trapper Peak completed the preliminary and final design. The design process, including an initial assessment, alternatives analysis, technical analysis ...


Gilman Drive Sewer Improvement Project, Jerry Lyle, Dylan Kresge, Chase Bowen 2019 Carroll College

Gilman Drive Sewer Improvement Project, Jerry Lyle, Dylan Kresge, Chase Bowen

Carroll College Student Undergraduate Research Festival

The University of California, San Diego is planning future housing projects on the south end of campus that are projected to increase the sewer generation rate in the area. The current sewer line runs along the south side of La Jolla Village Dr. and the east side of Gilman Dr. anywhere from 30'-60' deep, making any improvements to the current pipeline nearly impossible. Our job is to design a new pipeline that will provide relief to the existing sewer line and have as minimal impact on the surrounding environment as possible.


Risk Analysis Of Natural Gas Distribution Pipelines With Respect To Third Party Damage, Joseph S. Santarelli 2019 The University of Western Ontario

Risk Analysis Of Natural Gas Distribution Pipelines With Respect To Third Party Damage, Joseph S. Santarelli

Electronic Thesis and Dissertation Repository

The objective of this study is to develop a quantitative method of evaluating the risk of third party damage (TPD) on natural gas distribution pipelines using available industry data and practical engineering experience. A risk model for TPD of gas distribution pipelines is developed to allow for a more robust decision making process and better prioritization of the allocation of resources for operators of natural gas distribution pipelines. The model consists of likelihood and consequence classification procedures to estimate the severity of TPD events within an area.

The TPD model consists of a fault tree (FTA) model to estimate the ...


C. R. Anderson Parking Lot Expansion, Colter Brustkern, David Nielsen, Steve Clinch 2019 Carroll College

C. R. Anderson Parking Lot Expansion, Colter Brustkern, David Nielsen, Steve Clinch

Carroll College Student Undergraduate Research Festival

For Engineering Senior Design, we designed a parking lot expansion for C. R. Anderson Middle School in Helena, Montana. This expansion will provide 9,000 square feet of additional parking for faculty and staff by utilizing unused vacant space on the school’s East side. Our design covered of all aspects of the project from asphalt and geo-technical criteria and parking lot layout to pollution control and storm water retention.


Feasibility Investigation Of Upgrading Gravel Road To Otta Seal Surface: An Economic Analysis Approach, Ali Nahvi, Yang Zhang, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Charles T. Jahren, Douglas D. Gransberg, Sharif Y. Gushgari 2019 Iowa State University

Feasibility Investigation Of Upgrading Gravel Road To Otta Seal Surface: An Economic Analysis Approach, Ali Nahvi, Yang Zhang, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Charles T. Jahren, Douglas D. Gransberg, Sharif Y. Gushgari

Ali Nahvi

The Norwegian Road Authorities desired that a surface treatment be cost-effective to provide a faster return on investment, perform (as perceived by the road user) in a manner similar to conventional bituminous surfacing, and comply with the following requirements: • Be cheap and easy to implement • Utilize locally-available aggregates • Be impervious to prevent water incursion into moisture-susceptible base material • Be very flexible, durable, and easy to maintain.

Such a bituminous surface treatment, referred to as in 1963, and initial field trials were carried out during 1963-1965 in the Otta Valley, Norway. Although Nordic countries, Asia, Africa, New Zealand, and South America ...


Otta Seal Construction For Asphalt Pavement Resurfacing, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim 2019 Iowa State University

Otta Seal Construction For Asphalt Pavement Resurfacing, Sharif Y. Gushgari, Yang Zhang, Ali Nahvi, Halil Ceylan, Sunghwan Kim

Ali Nahvi

Otta seal resurfacing methods have been widely demonstrated for unpaved roads and road rehabilitation in a few states in the U.S. as well as in Scandinavia and Africa. Application of Otta seal over a deteriorated hot mix asphalt (HMA) surface has been considered as the feasible concept that has not been applied for real construction. In this study, a double-layer Otta seal construction over HMA surface was monitored. The applied materials for the construction were introduced. The following performance of the constructed Otta seal layers was evaluated by measuring the international roughness index (IRI) and dust. The road IRI ...


Multi-Objective Bayesian Optimization Of Super Hydrophobic Coatings On Asphalt Concrete Surfaces, Ali Nahvi, Mohammad Kazem Sadoughi, Ali Arabzadeh, Alireza Sassani, Chao Hu, Halil Ceylan, Sunghwan Kim 2019 Iowa State University

Multi-Objective Bayesian Optimization Of Super Hydrophobic Coatings On Asphalt Concrete Surfaces, Ali Nahvi, Mohammad Kazem Sadoughi, Ali Arabzadeh, Alireza Sassani, Chao Hu, Halil Ceylan, Sunghwan Kim

Ali Nahvi

Conventional snow removal strategies add direct and indirect expenses to the economy through profit lost due to passenger delays costs, pavement durability issues, contaminating the water runoff, and so on. The use of superhydrophobic (super-water-repellent) coating methods is an alternative to conventional snow and ice removal practices for alleviating snow removal operations issues. As an integrated experimental and analytical study, this work focused on optimizing superhydrophobicity and skid resistance of hydrophobic coatings on asphalt concrete surfaces. A layer-by-layer (LBL) method was utilized for spray depositing polytetrafluoroethylene (PTFE) on an asphalt concrete at different spray times and variable dosages of PTFE ...


Development Of A Mash Tl-4 Steel, Side-Mounted, Beam-And-Post, Bridge Rail, Oscar Pena 2019 University of Nebraska - Lincoln

Development Of A Mash Tl-4 Steel, Side-Mounted, Beam-And-Post, Bridge Rail, Oscar Pena

Civil Engineering Theses, Dissertations, and Student Research

A new steel, side-mounted, beam-and-post, bridge rail was designed, crash-tested, and evaluated according to safety performance guidelines included in the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH) for Test Level 4 (TL-4). The new bridge rail system was designed to be compatible to multiple concrete bridge decks utilized by the States of Illinois and Ohio. Bridge rail configurations were designed and optimized based on weight per foot, constructability, and safety. Post-to-rail and rail-to-rail connections were designed for the new bridge rail. Several concepts for these connections were configured, and after discussion with representatives ...


Development Of Post-To-Deck Connections For Use In A Mash Tl-4 Steel-Tube Bridge Rail, Pascual Mauricio 2019 University of Nebraska - Lincoln

Development Of Post-To-Deck Connections For Use In A Mash Tl-4 Steel-Tube Bridge Rail, Pascual Mauricio

Civil Engineering Theses, Dissertations, and Student Research

A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware (MASH) Test Level 4 steel-tube bridge rail to the side of the bridge deck to limit impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precasted prestressed, concrete box-beam girders.

A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube ...


An Underground Radio Wave Propagation Prediction Model For Digital Agriculture, Abdul Salam 2019 Purdue University

An Underground Radio Wave Propagation Prediction Model For Digital Agriculture, Abdul Salam

Faculty Publications

Underground sensing and propagation of Signals in the Soil (SitS) medium is an electromagnetic issue. The path loss prediction with higher accuracy is an open research subject in digital agriculture monitoring applications for sensing and communications. The statistical data are predominantly derived from site-specific empirical measurements, which is considered an impediment to universal application. Nevertheless, in the existing literature, statistical approaches have been applied to the SitS channel modeling, where impulse response analysis and the Friis open space transmission formula are employed as the channel modeling tool in different soil types under varying soil moisture conditions at diverse communication distances ...


Laboratory Evaluation And Neural Network Modeling For Rotational Viscosity Of Reacted And Activated Rubber Modified Binders, Mayzan Isied 2019 University of Texas at Tyler

Laboratory Evaluation And Neural Network Modeling For Rotational Viscosity Of Reacted And Activated Rubber Modified Binders, Mayzan Isied

Civil Engineering Theses

Crumb rubber surface activation and pretreatment are considered as one of the promising newly introduced methods for asphalt rubber production. Reacted and Activated Rubber (RAR) is an elastomeric asphalt extender produced by the hot blending and activation of crumb rubber with asphalt and Activated Mineral Binder Stabilizer (AMBS). Besides RAR ability in enhancing the performance of asphaltic mixtures, its dry granulate industrial form enabled its addition directly into the mixture utilizing pugmill or the dryer drum with very minimal to no modification required on the plant level.

This study aims to evaluate the rotational viscosity of RAR modified binders and ...


Seismic Performance Of Earth Slopes Subjected To Earthquake Mainshock – Aftershock Sequences, alisha khanal 2019 University of Texas at Tyler

Seismic Performance Of Earth Slopes Subjected To Earthquake Mainshock – Aftershock Sequences, Alisha Khanal

Civil Engineering Theses

Mainshocks are usually followed by aftershocks. Aftershocks continue over a period of time with a decreasing frequency and there is not sufficient time for repair and retrofit between a mainshock – aftershock sequence. Typically, aftershocks are smaller in magnitude; however, aftershock ground motion characteristics such as the intensity and duration can be greater than the mainshock due to the changes in the earthquake mechanism and location with respect to the site. The seismic performance of slopes is typically evaluated based on the sliding displacement predicted to occur along a critical sliding surface. Various empirical models are available that predict sliding displacement ...


The Urban Development Of Bronson Circle, Matthew Moulton 2019 Western Michigan University

The Urban Development Of Bronson Circle, Matthew Moulton

Honors Theses

Many suburban streets, and specifically Bronson Circle, in the city of Kalamazoo are in poor condition and in need of repair. Along with a new pavement design and additional drainage considerations, a complete redesign of the street’s cross-section with the concept of a “Complete Street” was created. A redesign of the site, traffic, pavement, drainage, and lighting were completed to lessen the street’s impact on the environment and make it more user friendly for all modes of transportation. This complete street design can be adjusted for terrain and used for any comparable urban street.

Included in this report ...


Save Our Sound Obx, Inc. V. North Carolina Department Of Transportation, Mitch L. WerBell V 2019 Alexander Blewett III School of Law at the University of Montana

Save Our Sound Obx, Inc. V. North Carolina Department Of Transportation, Mitch L. Werbell V

Public Land & Resources Law Review

The Fourth Circuit Court of Appeals recently ruled in favor of several governmental agencies seeking to construct a new bridge in the Pamlico Sound adjacent to North Carolina’s Outer Banks. For years, state and federal agencies have put forth a massive coordinated effort to address the constant weather damage and erosion which occurs to a section of North Carolina Highway 12. The court found the agencies properly cleared NEPA’s environmental review requirements for the bridge’s construction. Additionally, the opponent-litigants’ efforts to add claims challenging the project, based on new information about a shipwreck in the bridge’s ...


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