Engineering Sustainable Bridge Deck Rehabilitation: Evaluating Mechanical And Electro-Chemical Properties Of Rapid-Set Patching Materials And Their Influence On Repair Durability,
2024
Clemson University
Engineering Sustainable Bridge Deck Rehabilitation: Evaluating Mechanical And Electro-Chemical Properties Of Rapid-Set Patching Materials And Their Influence On Repair Durability, James Roberts
All Theses
As the state of the US infrastructure continues to deteriorate over time, a prominent issue especially in the field of reinforced concrete structures has been the ability to properly rehabilitate and extend the design service life of these structures. A majority of our existing reinforced concrete bridges were built in the construction boom during the 60’s, 70’s and 80’s, and were originally designed with a service life of approximately 50 years, thus showing that many structures are close to or have already exceeded their intended service life. Additionally, with a poor history of government infrastructure funding, it is seen to …
Quantifying Hurricane Effects On Housing: Evaluating Damage, Loss, And Shelter Demands Using Historical And Simulated Storm Tracks,
2024
Clemson University
Quantifying Hurricane Effects On Housing: Evaluating Damage, Loss, And Shelter Demands Using Historical And Simulated Storm Tracks, Adish Deep Shakya
All Theses
This research introduces an advanced framework which employs parametric wind field models for peak wind speeds, and building fragility curves, loss functions, and demographic data to estimate for estimating housing damage and loss. The uninhabitable units immediate displaced households, short-term and long-term shelter need households are determined. with a particular focus on those eligible for FEMA assistance. The framework's validity is reinforced by a high correlation in the analysis of recent hurricane events between estimated numbers of displaced households and actual FEMA aid recipients, where FEMA aids about 20-60% of the predicted long-term displaced households. A novel application of the …
Analytical And Experimental Studies To Support Codification Of Lightweight Grout For Masonry Design,
2024
Clemson University
Analytical And Experimental Studies To Support Codification Of Lightweight Grout For Masonry Design, Cooper Banks
All Theses
Lightweight (LW) aggregates have many potential benefits in masonry construction including minimizing mass, improving thermal performance, and reducing the potential for shrinkage cracking via internal curing. The current masonry design standard, TMS 402/602-22, permits lightweight aggregate in the production of concrete masonry units (CMU), but there has been insufficient testing of masonry assemblies to permit designing with LW grout. Shrestha et al. characterized LW grouts bond to reinforcement, shear strength, tension and shear pullout behavior of anchors and proposed possible reduction factors for design. Hiner characterized the flexural bond strength LW grouted masonry assemblies and proposed possible reduction factors for …
Development And Evaluation Of An Arsenic Transport Model For The Maurice River Watershed,
2024
Clemson University
Development And Evaluation Of An Arsenic Transport Model For The Maurice River Watershed, Christina Eddleman
All Theses
For many Superfund sites across the United States, arsenic is one of the most common contaminants of concern that must be cleaned up to protect human and environmental health. Past research and health studies have documented the harmful effects of inorganic arsenic on humans and the environment but selecting an appropriate remediation plan depends on several site-specific factors at each Superfund site. To assist in determining an appropriate remediation plan, sediment and contaminant transport models have been used to simulate the transport of arsenic and other contaminants of concern at contaminated sites to, e.g., make relative comparisons of the efficacy …
Routing Opportunities For Commercial Crossings Between El Paso And Juarez,
2024
University of Texas at El Paso
Routing Opportunities For Commercial Crossings Between El Paso And Juarez, Marek Musil
Open Access Theses & Dissertations
This thesis explores the topic of commercial movements between the El Paso and Ciudad Juarez road networks and the implications of the possible changes in their routing. This area houses several ports of entry, which present one of the busiest commercial and personal border crossings in the whole nation. The primary focus was to evaluate the recently proposed reconstruction scenario of removing trucks from the Bridge of the Americas and study the impacts on the flows throughout the other ports. The chosen tool to support the analysis is a mesoscopic simulation software called DynusT, which is capable of modeling the …
Smart Public Transportation And Mobility Hub Design In El Paso,
2024
University of Texas at El Paso
Smart Public Transportation And Mobility Hub Design In El Paso, Jiri Vojtisek
Open Access Theses & Dissertations
This thesis explores the potential of a Smart Public Transportation concept and mobility hub design as tools to mitigate the growing trend of transportation issues, such as traffic congestion, reliance on privately owned vehicles, or unattractive public transportation. Consequently, residentsâ?? lives are negatively affected by excessive noise, air pollution, and travel delays, leading to increased safety risks, lost productivity, and a lower quality of life. Considering these challenges, the study begins by analyzing the current state of public transportation in El Paso. Next, it introduces a toolkit from the Smart City concept, followed by case studies of best practices of …
Bim Coordination Post Pandemic,
2024
University of Connecticut - Storrs
Bim Coordination Post Pandemic, Zachary Marshall
Honors Scholar Theses
The goal of this thesis is to utilize previous research done on virtual meetings and build upon it by conducting new research on the successes and failures of current virtual BIM meetings. This paper starts with a literature review looking into Building Information Modeling (BIM) Coordination and the effects the COVID-19 pandemic has had on the BIM meetings. BIM meetings started to shift virtual due to the nature of the pandemic and this has had effects on the performance and structure of the coordination. This knowledge was then expanded on by looking at virtual BIM meeting case studies. Interviews were …
Culvert Design And Roadway Restoration Of Cavett Road At Damon Creek,
2024
Murray State University
Culvert Design And Roadway Restoration Of Cavett Road At Damon Creek, Kevin Harvey
Honors College Theses
Cavett Road is a small, two lane rural road located in Kirksey, Kentucky. This road faces the issue of flooding during light-to-moderate rain, posing risk to those who use the road, especially those living along Cavett Road. This flooding is also capable of washing away the surface of Cavett Road and the adjacent banks and soil wall of the creek, creating a risk of erosion and soil subsidence. To reduce the risk of flooding and erosion and improve roadway function, this project outlines a potential solution using newly-installed reinforced concrete box culverts and soil fill above them to improve the …
Analyses Of Thermal And Spectral Characteristics Of Artificial Turf And Natural Grass In Las Vegas Valley,
2024
University of Nevada, Las Vegas
Analyses Of Thermal And Spectral Characteristics Of Artificial Turf And Natural Grass In Las Vegas Valley, Tarannum Kalam Khandoker
UNLV Theses, Dissertations, Professional Papers, and Capstones
This thesis presents a comprehensive analysis of the thermal and spectral characteristics of Las Vegas Valley (LVV). The first objective examines the effects of artificial turf on the urban thermal environment in the LVV by analyzing the impact of Land Surface Temperature (LST) and surface albedo at 26 ROIs that transitioned from natural to artificial turf, alongside another 26 ROIs that remained unchanged between 2018 and 2022 utilizing available Landsat 8 satellite images for the respective years. In the comprehensive comparison of ROIs over the two years in question, it was observed that transitioning to artificial turf correlated with elevated …
Assessment Of Success Factors And Comparative Analysis Of Public Private Partnership (P3) Project Performances Against Design-Build And Design-Bid-Build Project Delivery,
2024
University of Nevada, Las Vegas
Assessment Of Success Factors And Comparative Analysis Of Public Private Partnership (P3) Project Performances Against Design-Build And Design-Bid-Build Project Delivery, Bandana Shrestha
UNLV Theses, Dissertations, Professional Papers, and Capstones
Public-private partnerships (P3s) projects have gained widespread popularity in both developed and developing countries due to their ability to access new financing sources and shift specific project risks to the private sector. P3s has been an active area of research with a particular focus on the concept of Critical Success Factors (CSF). The growing interest and the diverse outcomes associated with P3s emphasize the need for a thorough investigation into the factors that contribute to successful P3 projects. This study focused on identifying the CSFs for P3 highway and building projects towards project objectives of achieving cost efficiency and schedule …
Smart Manufacturing Of Cement: From Lab-Scale Simulation And Testing To Industry-Scale Deployment.,
2024
University of Louisville
Smart Manufacturing Of Cement: From Lab-Scale Simulation And Testing To Industry-Scale Deployment., Juan David Tabares Tamayo
Electronic Theses and Dissertations
Cement kilns are controlled by experienced process operators who follow experience-based industry guidelines using data collected and fundamental knowledge. The manufacturing process, which is equipped with sensors and equipment, transfers data/information to the operators to aid standardized decision-making operations. In contrast, companies have used such data to develop and implement digital solutions for predictive control systems; in effect, FLSmidth and Rockwell Automation. However, despite the availability of automated control systems and investigation in automation for process monitoring and optimization, opportunities to radically optimize cement manufacturing are still abundant and in need of implementation. Therefore, this research developed simulation models and …
Fly Ash Based Geopolymer: Water, Curing Temperature And, Cao Content Effects On Microstructure And Compressive Strength.,
2024
University of Louisville
Fly Ash Based Geopolymer: Water, Curing Temperature And, Cao Content Effects On Microstructure And Compressive Strength., Lujain Salem
Electronic Theses and Dissertations
Geopolymer, an emerging alternative to Portland cement-based concrete, relies on alumina and silica-rich precursors like fly ash for its formation. Geopolymerization is a chemical process that creates a three-dimensional polymer network by reacting with an alkaline activator. While fly ash's calcium oxide (CaO) content is crucial in its classification, it behaves differently in geopolymerization, where it competes with hydration. Therefore, a better understanding of the impact of CaO content in fly ash on geopolymerization is needed to effectively utilize fly ash. This study investigates the effects of CaO content, water, and curing temperature on geopolymerization. Using fly ash from a …
Building Services Engineering May/June 2024,
2024
Technological University Dublin
Building Services Engineering May/June 2024
Building Services Engineering
No abstract provided.
Physical And Stochiometric Controls On Nutrient Uptake And Ecosystem Respiration In Contrasting Sites,
2024
University of New Mexico
Physical And Stochiometric Controls On Nutrient Uptake And Ecosystem Respiration In Contrasting Sites, Jancoba K. Dorley
Civil Engineering ETDs
Meteorological, hydrological, and biogeochemical processes naturally control stream ecosystems. These processes define the frequency and distribution of precipitation and the supply and demand of solutes and particles to support aquatic food chains through space and time. Studies have also found that stream ecosystems are also controlled by anthropogenic activities, which occur on a much shorter timescale. These anthropogenic activities affect stream ecosystems' structure and function from local to planetary changes to the environment. It is essential for scientists and engineers to understand the relationships between naturally occurring processes and those created by human activities for a better interpretation of stream …
Using Genetic Algorithm And Geographic Information System For Equity-Driven Transportation Planning And Analysis,
2024
University of Texas at El Paso
Using Genetic Algorithm And Geographic Information System For Equity-Driven Transportation Planning And Analysis, Emiliano Del Rio Reyes
Open Access Theses & Dissertations
Efforts to address equitable access in public transit planning have gained momentum, spurred by incentives for Metropolitan Planning Organizations (MPOs) and State Departments of Transportation (DOTs). However, traditional strategies often fall short of meeting the needs of disadvantaged communities, particularly in underserved areas. This study presents a pioneering methodology leveraging Genetic Algorithms (GA) and Geographic Information Systems (GIS) to optimize bus stop placement, aiming to enhance equitable access in public transit systems. Focusing on Route 16 of Sun Metro in El Paso, Texasâ??a critical feeder route linking the Westside Transit Center to Upper Valley neighborhoodsâ??the research commences with a comprehensive …
Machine Learning Predictive Models For Load Identification Of Railroad Bridges Subjected To Train-Induced Vibration,
2024
The University of Texas Rio Grande Valley
Machine Learning Predictive Models For Load Identification Of Railroad Bridges Subjected To Train-Induced Vibration, Md Masnun Rahman
Theses and Dissertations
The U.S. rail network is among the world's largest, safest, and most efficient. However, many its railway bridges, which play an essential role in its connectivity, are over 100 years old, showing signs of structural deterioration exceeding their practical service life. The increased weight and speed of modern trains also pose a risk to these bridges. Traditional load identification and monitoring technologies like Weigh-in-Motion (WIM) systems are rarely used on railway bridges due to their cost and practical limits. This thesis explores a cost-effective approach to utilize vibration sensors on railway bridges to identify and predict train load features (speed …
Numerical Study Of New Tuned Mass Friction Damper For Seismic Protection Of Civil Structures,
2024
The University of Texas Rio Grande Valley
Numerical Study Of New Tuned Mass Friction Damper For Seismic Protection Of Civil Structures, Syed Muhammad Bilal Haider
Theses and Dissertations
Tuned Mass Friction Dampers (TMFDs) are passive control systems designed to mitigate vibrations in civil structures subjected to extreme lateral forces such as windstorms and earthquakes. The objective of this thesis is to propose a new TMFDs with enhanced energy dissipation capability for seismic protection of multi-story frame buildings. This new TMFD is termed as “Tuned Mass Multi-Sliding Friction Damper” (TMMSFD) consisting of multiple masses connected to the primary structure through linear springs and while sliding relative to each other at multiple sliding surfaces. TMMSFD offers an improved damping mechanism with reduced stick-slip motion effects compared to standard TMFDs which …
Investigation Into The Effect Of Mixture Composition On Setting Time Of Magnesium Phosphate Cement,
2024
University of Arkansas, Fayetteville
Investigation Into The Effect Of Mixture Composition On Setting Time Of Magnesium Phosphate Cement, Autumn Broglen
Civil Engineering Undergraduate Honors Theses
Magnesium phosphate cement (MPC) is a cementitious material that is formed through an acid-base reaction between magnesia and phosphate. This reaction occurs rapidly, making MPC an appealing choice for rapid repair applications. The purpose of this project is to investigate the impact of different proportions of class F fly ash, set retarder consisting of a mixture of boric acid and dextrose, magnesium to phosphate ratio, and water/cement ratio on the initial setting time of MPC paste. Different mixtures of MPC paste were developed to vary the proportions of each constituent, and setting time of each mixture was determined using the …
Final Design Of Legion Hall Revitalization In Potter, Nebraska,
2024
University of Nebraska-Lincoln
Final Design Of Legion Hall Revitalization In Potter, Nebraska, Madison Brennfoerder
Honors Program: Senior Projects (Public)
This project was conducted to renovate and revitalize the Legion Hall community center in the Village of Potter located in western Nebraska north of the Interstate. The work completed for this project can be separated into five disciplines: Hydrologic & Hydraulic Design, Geotechnical Analysis, Structural Analysis, Environmental Analysis, and Transportation Design. Legion Hall is a historical building within The Village of Potter which was built in 1917. The Village of Potter has recently acquired the rights to the hall and is seeking to revitalize the historical community center to increase tourism in the village.
A Parametric Study On The Energy Dissipation Capability Of Frictional Mechanical Metamaterials Engineered For Vibration Isolation,
2024
The University of Texas Rio Grande Valley
A Parametric Study On The Energy Dissipation Capability Of Frictional Mechanical Metamaterials Engineered For Vibration Isolation, Shayan Khosravi, Mohsen Amjadian
Civil Engineering Faculty Publications
Mechanical metamaterials are engineered structures with complex geometric arrangements that display unconventional mechanical properties which are uncommon in traditional materials. They possess the ability to manipulate and control mechanical wave propagation across specific frequency ranges known as frequency bandgaps. This feature makes them extremely useful for a variety of applications in structural control including passive vibration isolation. These materials can be engineered to selectively block or redirect the input motion at their dominant frequency while allowing the transmission of motion at other frequencies. This paper aims to study the dynamic performance of an innovative mechanical metamaterial designed for seismic isolation …
