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Full-Text Articles in Civil and Environmental Engineering

Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, Travis D. Garrett May 2020

Effects On Strength And Corrosive Characteristics Of Hardened Cement Paste Using Rice Husk And Sugarcane Bagasse, Travis D. Garrett

Master's Theses

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, Anna C. Hunter May 2020

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 Jan 2020

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 Jan 2020

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, Levi Sandbulte Dec 2019

Mandela Splash Pad Pre-Construction Plan, Levi Sandbulte

Theses/Capstones/Creative Projects

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, Taylor J. Sorensen Dec 2019

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, Tian Gan Dec 2019

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 ...


P-12 Potential Compact Fiberboard From Combining Shredded Corrugated Cardboard And Pet Water Bottles, Joshua Lim Khye Shuen Oct 2019

P-12 Potential Compact Fiberboard From Combining Shredded Corrugated Cardboard And Pet Water Bottles, Joshua Lim Khye Shuen

Celebration of Research and Creative Scholarship

Corrugated cardboard and plastic bottles (PET) can each be recycled; however the current research is looking at recycling both cardboard and PET into a new combined material. The current method of recycling corrugated cardboard is to shred and recombine the material to make new cardboard. According to the Container Recycling Institute (http://www.container-recycling.org/), only 7.5% of PET manufactured in the US and Canada are recycled. The sheer amount of corrugated cardboard and PET bottles can be recycled for other practical uses. Corrugated cardboard and PET bottles, when shredded and placed into a 3x3x6 inch mold, can be ...


The Effects Of Erosion Structures On Triplett Creek From The Fall Of 2016, 2017, And 2018, Haylee Winters Oct 2019

The Effects Of Erosion Structures On Triplett Creek From The Fall Of 2016, 2017, And 2018, Haylee Winters

Posters-at-the-Capitol

Triplett Creek is a tributary of the Licking River. It runs through Morehead, KY, where we are conducting our research.

The creek was modified in the 1970s but construction was halted before the project was complete. Unfortunately, the result was an increase in overflow and subsequent riverbank erosion. The city installed sediment trap rocks in hopes of slowing down the water and decreasing erosion. We are using drones and photogrammetric software to map the area and compare images of the river to determine erosion rates. The new images will be compared to ones taken in previous years to visualize the ...


Download Bmp Trains 2020 Newest Version, Martin Wanielista Oct 2019

Download Bmp Trains 2020 Newest Version, Martin Wanielista

BMP Trains

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 version increases the reporting decimal places for TP removed in the Summary and Complete Reports A well as changes from fraction to % in exfiltration worksheet..

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 ...


Kc 4.3: Rural Landscapes Of The 20th Century, Stefania Landi, Concetta Lenza, Denise Ulivieri Oct 2019

Kc 4.3: Rural Landscapes Of The 20th Century, Stefania Landi, Concetta Lenza, Denise Ulivieri

Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà

During the 20th Century, rural landscapes all over the world underwent rapid transformations as a result of many factors - including new socio-political and economic conditions, new agricultural practices and the mechanization of agriculture - resulting in radical transformations of land uses and in the introduction of new infrastructures and facilities, necessary for the storage and distribution of an ever increasing amount of products. Based on the existing documents and bibliography relevant to the topic (ICOMOS-IFLA, Principles concerning rural landscapes as heritage, 2017; ICOMOS-ISC20C, Madrid-New Delhi Document. Approaches to the conservation of twentieth-century cultural heritage, 2017; Meeus, Wijermans, Vroom, 1990; Pungetti ...


2019 Safety Belt Usage Survey In Kentucky, Erin Lammers, Kenneth R. Agent, Eric R. Green Oct 2019

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, Melodi Zhan-Moodie Oct 2019

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 ...


Panel 1 Paper 1.3: Le Paysage Rural Patrimonial, Outil Et Projet Au Service De La Lutte Contre Le Réchauffement Climatique, Régis Ambroise Oct 2019

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, Sherif Abdelaziz, Dilip Gersappe, Dilip Rafailovich Sep 2019

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, Jina Yin Sep 2019

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, Iris Tien Sep 2019

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 Sep 2019

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, Prateek Man Shrestha, Jamie L. Humphrey, Elizabeth J Carlton, John L Adgate, Kelsey Barton, Elisabeth Root, Shelly L. Miller Sep 2019

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 ...


An Integrated Framework To Assess Compound Flood Risks For Interdependent Critical Infrastructure In A Coastal Environment, Ying Zhang Sep 2019

An Integrated Framework To Assess Compound Flood Risks For Interdependent Critical Infrastructure In A Coastal Environment, Ying Zhang

Electronic Thesis and Dissertation Repository

Compound flooding refers to flood events caused by multiple factors, including marine processes (e.g. storm tides and waves), hydrometeorological signals (e.g. rainfall and river flows) among others. Saint Lucia is a tropical island in eastern Caribbean Sea, which is frequently affected by weather-related extreme events such as tropical storms and the associated risks are exacerbated due to its mountainous topography and high concentrations of infrastructure and human communities close to the coast. At the southern coast of Saint Lucia, significant infrastructures such as Hewanorra International Airport and Vieux Fort Seaport, and human settlements such as towns of Vieux ...


Valorization Of Sewage Sludge Via Gasification And Transportation Of Compressed Syngas, Marek Mysior, Maciej Tomaszewski, Paweł Stepien, Jacek A. Koziel, Andrzej Białowiec Sep 2019

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, Diba Malekpour Koupaei, Farzad Hashemi, Vinciane Tabard-Fortecoëf, Ulrike Passe Sep 2019

A Technique For Developing High-Resolution Residential Occupancy Schedules For Urban Energy Models, Diba Malekpour Koupaei, Farzad Hashemi, Vinciane Tabard-Fortecoëf, Ulrike Passe

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, Saman Kazemi Sep 2019

Review Of Polymer Gels For Conformance Control In Oil Reservoirs, Saman Kazemi

Major Papers

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, David G. Tarboton Sep 2019

Earth Cube Data Capabilities: Collaborative Research: Deep Integration Of Reproducibility In Community Portals, David G. Tarboton

Funded Research Records

No abstract provided.


Environmentally Responsible Land Use, Spring/Summer 2010, Issue 22 Sep 2019

Environmentally Responsible Land Use, Spring/Summer 2010, Issue 22

Sustain Magazine

No abstract provided.


Sustainable Communities, Fall/Winter 2010, Issue 21 Sep 2019

Sustainable Communities, Fall/Winter 2010, Issue 21

Sustain Magazine

No abstract provided.


Sustainable Building, Spring/Summer 2009, Issue 20 Sep 2019

Sustainable Building, Spring/Summer 2009, Issue 20

Sustain Magazine

No abstract provided.


Environmental History, Fall/Winter 2009, Issue 19 Sep 2019

Environmental History, Fall/Winter 2009, Issue 19

Sustain Magazine

No abstract provided.


Student Research, Spring/Summer 2008, Issue 18 Sep 2019

Student Research, Spring/Summer 2008, Issue 18

Sustain Magazine

No abstract provided.


Evolving Pollution Prevention, Fall/Winter 2008, Issue 17 Sep 2019

Evolving Pollution Prevention, Fall/Winter 2008, Issue 17

Sustain Magazine

No abstract provided.