Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, 2020 Louisiana Tech University
Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, Travis D. Garrett
Cement is one of the most used building materials in the world. The production of ordinary Portland cement contributes to the release of harmful greenhouse gasses. In an effort to reduce these emissions, different materials are being evaluated for their use as partial replacements for ordinary Portland cement. Rice husk and sugarcane bagasse are agricultural waste products and large amounts of these are currently landfilled, making them inexpensive and available. When combusted at high temperatures they form rice husk ash and sugarcane bagasse ash that have pozzolanic characteristics. The high silicon dioxide in these products makes them good options to ...
Countermeasures For Pedestrian-Involved Accidents On Interstate-Highways, 2020 University of Arkansas, Fayetteville
Countermeasures For Pedestrian-Involved Accidents On Interstate-Highways, Anna C. Hunter
Civil Engineering Undergraduate Honors Theses
Pedestrian access to the Interstate is prohibited, but many pedestrian-involved accidents still occur on the Interstate in the United States. This project is a case study of West Memphis, Arkansas, which has the second highest occurrence of pedestrian-involved accidents on the Interstate in Arkansas. The study site location includes a segment of Interstate I-40 which is at- grade. The surrounding area contains several different land-uses, which is believed to be the primary generator of these accidents. The goal of this project is to determine the primary causes of these accidents and determine potential countermeasures to reduce the crash rate for ...
Prevention Of Harmful Algal Blooms By The Mitigation Of Phosphorus Nutrient Loading Via Filtration By Steel Wool And Activated Carbon, Samantha Zidd, Sara Kidd, Ronald Simpson
Williams Honors College, Honors Research Projects
Harmful Algal Blooms (HABs) are a devastating ecological and economic consequence of the abundance of nutrient-rich agricultural runoff entering aquatic ecosystems (Baker et al. 2014). Bioavailable phosphorus from synthetic fertilizers is one of the major nutrients contributing to this global issue. Preliminary studies indicate that dissolved phosphorus can be removed from an aqueous environment when passed through a composite mixture of granular steel wool particles and activated carbon (Erickson, Gulliver, and Weiss (2007). Further research was conducted using higher quality concentration measurements to determine what grades of steel wool (0000, 000, 00) and types of activated carbon (GAC, PAC, EAC ...
Improving An Experimental Test Bed With Time-Varying Parameters For Developing High-Rate Structural Health Monitoring Methods, D. T. Foley, B. S. Joyce, J. Hong, Simon Laflamme, J. Dodson
Civil, Construction and Environmental Engineering Publications
With the development of complex structures with high-rate dynamics, such as space structures, weapons systems, or hypersonic vehicles, comes a need for real-time structural health monitoring (SHM) methods. Researchers are developing algorithms for high-rate SHM methods, however, limited data exists on which to test these algorithms. An experimental test bed to simulate high-rate systems with rapid parameter changes was previously presented by the authors. This paper expands on the previous work. The initial configuration consisted of a cantilevered steel beam with a cart-roller system on a linear actuator to create an adjustable boundary condition along the beam, as well as ...
Mandela Splash Pad Pre-Construction Plan, 2019 University of Nebraska at Omaha
Mandela Splash Pad Pre-Construction Plan, Levi Sandbulte
In the construction industry, it is the responsibility of the general contractor to take the architect’s ideas and turn it into a real building. Many times this requires ample communication and several drafts. This efficient execution of this process is vital to the completion of a successful project. In this project, I practice this communication process. The challenge presented by the owner is to build an affordable splash pad, and without impacting the construction schedule of the Early Childhood Development Center (ECDC) that is being built on the same property at the same time. This proposal gives the owner ...
Reducing Thermal Bridging And Understanding Second-Order Effects In Concrete Sandwich Wall Panels, 2019 Utah State University
Reducing Thermal Bridging And Understanding Second-Order Effects In Concrete Sandwich Wall Panels, Taylor J. Sorensen
All Graduate Theses and Dissertations
Structural engineers have traditionally detailed structures with structural and fabrication efficiency in mind, but often based on a limited understanding of thermal efficiency. Some connection designs can create significant thermal bridging, leading to unnecessary heat transfer and even premature degradation through condensation. Thermal bridging occurs when heat transfer is given a path through a more conductive material like concrete or steel rather than insulation. Concrete sandwich wall panels (SWP) tend to be highly efficient at preventing heat transfer in the middle of panels, with greatest heat transfer occurring at connections. This project identified thermally efficient details for future SWP construction ...
Advancing Cyberinfrastructure For Collaborative Data Sharing And Modeling In Hydrology, 2019 Utah State University
Advancing Cyberinfrastructure For Collaborative Data Sharing And Modeling In Hydrology, Tian Gan
All Graduate Theses and Dissertations
Hydrologic research is increasingly data and computationally intensive, and often involves hydrologic model simulation and collaboration among researchers. With the development of cyberinfrastructure, researchers are able to improve the efficiency, impact, and effectiveness of their research by utilizing online data sharing and hydrologic modeling functionality. However, further efforts are still in need to improve the capability of cyberinfrastructure to serve the hydrologic science community. This dissertation first presents the evaluation of a physically based snowmelt model as an alternative to a temperature index model to improve operational water supply forecasts in the Colorado River Basin. Then it presents the design ...
2019 Safety Belt Usage Survey In Kentucky, 2019 University of Kentucky
2019 Safety Belt Usage Survey In Kentucky, Erin Lammers, Kenneth R. Agent, Eric R. Green
Eric R. Green
The objective of the survey summarized in this report was to establish a statewide safety belt usage rate in Kentucky for 2019. This rate can be compared to those determined from previous surveys. The 2019 statewide survey documents the continued effect associated with law enforcement, related education, and general public attitude.
Spatio-Temporal Analysis Of Highway Congestion And Accidents: A Case Study Of Interstate 285 In Georgia, 2019 Kennesaw State University
Spatio-Temporal Analysis Of Highway Congestion And Accidents: A Case Study Of Interstate 285 In Georgia, Melodi Zhan-Moodie
Master of Science in Civil Engineering Theses
Road traffic crashes threaten thousands of drivers every day and significant efforts have been put forth to reduce the number of traffic crashes and their impact. Traffic congestion could be both a result of and a contributing factor to traffic crashes. The aim of this study is to investigate spatio-temporal traffic congestion and crash patterns to gain a better understanding of the causation of congestion and accidents, and their interaction. The Interstate 285 (I-285) in Georgia was used as a case study. With the aid of Geographic Information Systems (GIS), spatial clustering and densities of accidents were performed by following ...
Download Bmp Trains 2020 Newest Version, 2019 University of Central Florida
Download Bmp Trains 2020 Newest Version, Martin Wanielista
This is version 2.0.2. BMP Trains 2020 is a computer program used to assess the average annual removal effectiveness of nutrients. It is based on research from the State of Florida and uses design criteria in the State. It is accepted by regulatory agencies in the State. This release increases the reporting decimal places for TP removed in the complete and summary reports.
The development was supported by the Florida Department of Transportation. It is an improvement from all previous versions – most notably because of the departure from the Microsoft Excel platform to being programmed and compiled using ...
Panel 1 Paper 1.3: Le Paysage Rural Patrimonial, Outil Et Projet Au Service De La Lutte Contre Le Réchauffement Climatique, 2019 Collectif Paysages de l'après pétrole
Panel 1 Paper 1.3: Le Paysage Rural Patrimonial, Outil Et Projet Au Service De La Lutte Contre Le Réchauffement Climatique, Régis Ambroise
Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà
Cette intervention fait référence au paragraphe de la résolution19GA 2017/30 du Conseil International des Monuments et des Sites indiquant que « la 19° Assemblée générale de l’ICOMOS… salue l’adoption de l’accord de Paris et encourage tous les membres de l’ICOMOS à renforcer leurs efforts pour appuyer sa mise en œuvre et identifier les réponses qui s’appuient sur le patrimoine ou les paysages culturels… ». Elle prend l’exemple de la façon dont les paysages de terrasses ont été abordés ces dernières années dans trois situations différentes : en France, dans le Guizhou en Chine et dans le ...
Biopolymer-Stabilized Earth Materials For Resilient And Adaptable Infrastructures, 2019 SUNY Stony Brook
Biopolymer-Stabilized Earth Materials For Resilient And Adaptable Infrastructures, Sherif Abdelaziz, Dilip Gersappe, Dilip Rafailovich
Department of Civil Engineering Faculty Publications
Earth dams and levees are constructed and retrofitted nowadays using the same materials that were used in the past, clays and sands. Despite the current advances in engineering, designing and constructing these critical infrastructure, earthen dams and levees continue to suffer from the same challenges over the years. These challenges include internal and surface erosions, loss of stability due to moisture migration, and inabilities to self-heal potential failure points. This project focuses on the use of biopolymers as additives to strengthen earthen dams and levees targeting an overall increase in their resilience.
Explicitly, the report for Milestone 3 presented the ...
Groundwater Management Optimization And Saltwater Intrusion Mitigation Under Uncertainty, 2019 Louisiana State University
Groundwater Management Optimization And Saltwater Intrusion Mitigation Under Uncertainty, Jina Yin
LSU Doctoral Dissertations
Groundwater is valuable to supply fresh water to the public, industries, agriculture, etc. However, excessive pumping has caused groundwater storage degradation, water quality deterioration and saltwater intrusion problems. Reliable groundwater flow and solute transport modeling is needed for sustainable groundwater management and aquifer remediation design. However, challenges exist because of highly complex subsurface environments, computationally intensive groundwater models as well as inevitable uncertainties. The first research goal is to explore conjunctive use of feasible hydraulic control approaches for groundwater management and aquifer remediation. Water budget analysis is conducted to understand how groundwater withdrawals affect water levels. A mixed integer multi-objective ...
Data To Risk-Informed Decisions Through Bridge Model Updating, 2019 Georgia Institute of Technology
Data To Risk-Informed Decisions Through Bridge Model Updating, Iris Tien
INSPIRE Archived Webinars
Across the country, bridge structures are aging with use commonly extending beyond their original design lives. Decisions to repair, retrofit or rehabilitate these structures will support continued reliability and resilience of these structures. To better understand the states of the bridges at any point in time, there are new technologies to inspect, monitor and assess bridge conditions.
To effectively use the results of these inspections and monitoring activities, we need an understanding of the relation between varying inspection parameters and the predicted performance of bridge structures.
In this seminar, we will describe methods to use inspection data to update assessment ...
Analytical Approach To Investigation Of Free Vibration Of Thin Rectangular Plate Immersed In Fluid, Resting On Winkler And Pasternak Foundations, Obanishola Sadiq, Gbeminiyi Sobamowo, Saheed Salawu
Karbala International Journal of Modern Science
Dynamic behaviour of free vibration of rectangular plate is investigated. This study considered an analytical approach to investigation of free vibration of thin rectangular plate immersed in fluid, resting on Winkler and Pasternak foundations.The governing nonlinear partial differential equation is analyzed using two-dimensional differential transform method. The accuracy of the analytical solutions obtained is verified with existing results in literature and confirmed in excellent agreement. Thereafter, the analytical solutions are used for investigation of effect of elastic foundation, fluid and aspect ratio on vibrating plate.From the result, it is observed that, increase elastic foundation parameters increases natural frequency ...
Impact Of Outdoor Air Pollution On Indoor Air Quality In Low-Income Homes During Wildfire Seasons, 2019 University of Colorado Boulder
Impact Of Outdoor Air Pollution On Indoor Air Quality In Low-Income Homes During Wildfire Seasons, Prateek Man Shrestha, Jamie L. Humphrey, Elizabeth J Carlton, John L Adgate, Kelsey Barton, Elisabeth Root, Shelly L. Miller
University Libraries Open Access Fund Supported Publications
Indoor and outdoor number concentrations of fine particulate matter (PM2.5), black carbon (BC), carbon monoxide (CO), and nitrogen dioxide (NO2) were monitored continuously for two to seven days in 28 low-income homes in Denver, Colorado, during the 2016 and 2017 wildfire seasons. In the absence of indoor sources, all outdoor pollutant concentrations were higher than indoors except for CO. Results showed that long-range wildfire plumes elevated median indoor PM2.5 concentrations by up to 4.6 times higher than outdoors. BC, CO, and NO2 mass concentrations were higher indoors in homes closer to roadways compared to those further away ...
Valorization Of Sewage Sludge Via Gasification And Transportation Of Compressed Syngas, 2019 Wrocław University of Science and Technology
Valorization Of Sewage Sludge Via Gasification And Transportation Of Compressed Syngas, Marek Mysior, Maciej Tomaszewski, Paweł Stepien, Jacek A. Koziel, Andrzej Białowiec
Jacek A. Koziel
A significant challenge in the utilization of alternative gaseous fuels is to use their energy potential at the desired location, considering economic feasibility and sustainability. A potential solution is a compression, transportation in pressure tanks, and generation of electricity and heat directly at the recipient. In this research, the potential for generating syngas from abundant waste substrates was analyzed. The sewage sludge (SS) was used as an example of a bulky and abundant resource that could be valorized via gasification, compression, and transport to end-users in containers. A model was developed, and theoretical analyses were completed to examine the influence ...
A Technique For Developing High-Resolution Residential Occupancy Schedules For Urban Energy Models, 2019 Iowa State University
A Technique For Developing High-Resolution Residential Occupancy Schedules For Urban Energy Models, Diba Malekpour Koupaei, Farzad Hashemi, Vinciane Tabard-Fortecoëf, Ulrike Passe
Occupants’ presence and activity schedules directly influence residential energy consumption loads. Regardless of their widely acknowledged importance, developing proper representative occupancy inputs for urban energy use studies of residential neighborhoods remains to be a challenge to overcome. The presented work aims to balance between accuracy and complexity of such occupancy models by developing a technique that takes advantage of a previously proposed sophisticated method for schedule generation and attempts to refine and simplify its results for practicality purposes.
Here, we used a Markov chain transition probability matrix based on the American Time-Use Survey (ATUS) database and selectively refined its outputs ...
Review Of Polymer Gels For Conformance Control In Oil Reservoirs, 2019 university of windsor
Review Of Polymer Gels For Conformance Control In Oil Reservoirs, Saman Kazemi
Excess water production due to conformance problems is a serious issue in oil extraction with severe environmental and economic implications. This is mainly due to the heterogeneity of the reservoir and existence of thief zones which uptake the injected water. Polymer gels have been successfully used to improve the sweep efficiency and to mitigate excess water production. However, due to the complexity of the reservoir, reservoir temperature, salinity, pH, lithology, and permeability, selection of proper gel system is still challenging. This paper aims to provide a literature review on six widely applied polymer gel systems used for conformance control applications ...
Earth Cube Data Capabilities: Collaborative Research: Deep Integration Of Reproducibility In Community Portals, 2019 Utah State University
Earth Cube Data Capabilities: Collaborative Research: Deep Integration Of Reproducibility In Community Portals, David G. Tarboton
Funded Research Records
No abstract provided.