Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Civil Engineering (11799)
- Environmental Engineering (6117)
- Transportation Engineering (5920)
- Physical Sciences and Mathematics (4613)
- Geotechnical Engineering (4583)
-
- Construction Engineering and Management (4458)
- Structural Engineering (4011)
- Environmental Sciences (2637)
- Other Civil and Environmental Engineering (2488)
- Materials Science and Engineering (2201)
- Architecture (2167)
- Hydraulic Engineering (1981)
- Social and Behavioral Sciences (1679)
- Mechanical Engineering (1518)
- Water Resource Management (1479)
- Earth Sciences (1335)
- Computer Engineering (1327)
- Architectural Engineering (982)
- Chemical Engineering (972)
- Electrical and Computer Engineering (921)
- Bioresource and Agricultural Engineering (919)
- Public Affairs, Public Policy and Public Administration (878)
- Metallurgy (874)
- Life Sciences (859)
- Construction Engineering (851)
- Structural Materials (845)
- Statistics and Probability (667)
- Data Storage Systems (636)
- Institution
-
- Missouri University of Science and Technology (7869)
- University of Kentucky (2796)
- Purdue University (2550)
- University of Nebraska - Lincoln (2277)
- Utah State University (2083)
-
- California Polytechnic State University, San Luis Obispo (1728)
- Brigham Young University (1183)
- Technological University Dublin (1063)
- Louisiana State University (1043)
- Portland State University (850)
- Chulalongkorn University (788)
- University of Texas at Arlington (699)
- Clemson University (657)
- University of Central Florida (627)
- Changsha University of Science and Technology (576)
- Universitas Indonesia (552)
- New Jersey Institute of Technology (546)
- Old Dominion University (542)
- Michigan Technological University (513)
- University of South Florida (509)
- University of Nevada, Las Vegas (468)
- Montana Tech Library (464)
- Marquette University (441)
- University of Arkansas, Fayetteville (435)
- Air Force Institute of Technology (421)
- Western University (350)
- Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan (320)
- University of Colorado Law School (304)
- University of New Mexico (284)
- University of Texas at El Paso (279)
- Keyword
-
- Engineering (992)
- Construction (842)
- Building (478)
- Concrete (455)
- Architecture (428)
-
- Sustainability (428)
- Plumbing (346)
- Kentucky transportation (332)
- Montana (297)
- Transportation (283)
- Safety (281)
- Climate change (239)
- UWRL (231)
- Groundwater (216)
- Department of Civil, Environmental, and Geospatial Engineering (204)
- Bridge (203)
- Kentucky (199)
- Durability (195)
- Civil Engineering (188)
- Bridges (183)
- Design (177)
- Water quality (177)
- Optimization (176)
- Modeling (169)
- Applied sciences (166)
- Pavement (162)
- Machine learning (158)
- Corrosion (142)
- NDOR (139)
- GIS (136)
- Publication Year
- Publication
-
- International Conference on Case Histories in Geotechnical Engineering (2055)
- Kentucky Transportation Center Research Report (1820)
- International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics (1566)
- Theses and Dissertations (1335)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (1250)
-
- JTRP Technical Reports (1127)
- CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018) (1036)
- Construction Management (999)
- Electronic Theses and Dissertations (668)
- International Congress on Environmental Modelling and Software (629)
- Masters Theses (598)
- Reports (583)
- Journal of China & Foreign Highway (576)
- Department of Agricultural and Biological Systems Engineering: Faculty Publications (574)
- Civil and Environmental Engineering Faculty Publications (562)
- Kentucky's Annual Forum on Transportation (503)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (478)
- Building Services Engineering (476)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (471)
- Makara Journal of Technology (436)
- Civil and Environmental Engineering Faculty Publications and Presentations (424)
- Theses (419)
- Bachelors Theses and Reports, 1928 - 1970 (416)
- LSU Master's Theses (406)
- Civil and Environmental Engineering (389)
- USF Tampa Graduate Theses and Dissertations (387)
- Purdue Road School (368)
- Nebraska Department of Transportation: Research Reports (335)
- Civil Engineering Theses - Archive (331)
- Publications (331)
- Publication Type
Articles 5401 - 5430 of 39805
Full-Text Articles in Civil and Environmental Engineering
Indiana’S New Strategic Highway Safety Plan, Michael A. Holowaty
Indiana’S New Strategic Highway Safety Plan, Michael A. Holowaty
Purdue Road School
Over the past 2 years, Indiana has been part of a nationwide surge in the number of motor vehicle fatalities and serious injuries. Even before that time, traffic deaths remained stubbornly high in comparison to other industrial peer nations. In 2022, INDOT engaged with stakeholders and partners inside and outside of state government to create a new Strategic Highway Safety Plan (SHSP). The new SHSP is aligned with the FHWA Safe Systems Approach and will help facilitate the changes brought by the Bipartisan Infrastructure Legislation (BIL Act) to state and local safety programs. This presentation will introduce the structure of …
Economic Development And Infrastructure, Gary J. Pool
Economic Development And Infrastructure, Gary J. Pool
Purdue Road School
This presentation will cover how the developments on the Olio Road Corridor have affected Hancock County’s roadway deterioration and construction, revenue and funding, and public involvement.
Going The Extra Mile: Responding To Eastern Kentucky Flooding, Ed Green
Going The Extra Mile: Responding To Eastern Kentucky Flooding, Ed Green
Purdue Road School
The Kentucky Transportation Cabinet (KYTC) responded to one its worst transportation challenges ever when historic flooding struck Appalachia and Eastern Kentucky counties in 2022. The transportation agency responded immediately to the disaster, and in the months following the event, KYTC was charged with assessing bridges for safety, clearing roads and streams, and restoring access to allow responders to reach those in need. New programs were quickly developed to address needs ranging from the installation of temporary bridges to the creation of temporary shelters for displaced residents. During this, C2 Strategic Communications partnered with KYTC to develop a communications campaign to …
Experimenting With Orange Pavement Markings On Indiana Roadways, Michael R. Williamson, Joseph Bruno
Experimenting With Orange Pavement Markings On Indiana Roadways, Michael R. Williamson, Joseph Bruno
Purdue Road School
This session presents the status of experimental orange pavement markings on Indiana roadways. The presentation includes a summary of the MUTCD experimentation request and an evaluation of orange pavement marking types— including tapes and paints with a focus on color and retroreflectivity retention. The effects of driving behavior on the safety of work zones, vehicle lane positioning, and public opinion are also discussed.
Innovative Intersection Traffic Modeling: Tips, Tricks, And Things Often Overlooked, Nathaniel Shellhamer, David Reamer
Innovative Intersection Traffic Modeling: Tips, Tricks, And Things Often Overlooked, Nathaniel Shellhamer, David Reamer
Purdue Road School
INDOT is actively pursuing innovative intersection treatments across the state to improve safety and mobility. Traffic analysis of these intersections is critical to ensure they will perform as intended, but can often be complex. This session will explore several best practices for modeling innovative intersections and will highlight commonly overlooked elements that are key to proper traffic analysis.
Pedestrian Maintenance Of Traffic For Designers, Katherine Smutzer
Pedestrian Maintenance Of Traffic For Designers, Katherine Smutzer
Purdue Road School
This presentation with summarize current guidance being developed for the maintenance of pedestrian traffic during construction. The presentation will provide designers with guidance on INDOT’s decision-making hierarchy and expectations related to the documentation and development of pedestrian maintenance of traffic plans.
See A Sign? Make A Call, John Habermann, P.E.
See A Sign? Make A Call, John Habermann, P.E.
Purdue Road School
DOT staff and technology resources have the proven potential to help combat human trafficking if DOT employees know the indicators of human trafficking and how to cooperate with requests from agencies for information that can be derived from DOT assets. The Texas A&M Transportation Institute, NCHRP, and the Heart of Texas Human Trafficking Coalition will discuss the intersection of human trafficking with the transportation sector. Attendees will also learn the main components of human trafficking, the basic signs of human trafficking on DOT facilities, and resources to use in their own states.
Full-Scale Testing Of Power Transfer Roadways, Oscar Moncada
Full-Scale Testing Of Power Transfer Roadways, Oscar Moncada
Purdue Road School
A dynamic wireless power transfer roadway refers to the integration of wireless power transfer technology into a new and existing road infrastructure to provide motive power, battery charging, or both to electric vehicles. The objective of this presentation is to evaluate the mechanical and thermal performance of the system when incorporated in both flexible and rigid pavement structures.
Flood Risk Data For Highway Projects, Nabil Ghalayini
Flood Risk Data For Highway Projects, Nabil Ghalayini
Purdue Road School
This presentation will provide project managers and engineers with a clear understanding of available FEMA Risk MAP flood hazard data to better inform project design. This presentation will broadly define flood risk, review the FEMA flood risk database as a source of risk parameters, contrast the regulatory Special Flood Hazard Area (SFHA) with Risk MAP depth and probability grids, and highlight the variability of risk within the SFHA.
Uncertainty Quantification And Fragility Development Of Deteriorating Rc Bridge Piers, Ayush Bhandari
Uncertainty Quantification And Fragility Development Of Deteriorating Rc Bridge Piers, Ayush Bhandari
Dissertations and Theses
Corrosion can reduce structural capacity and increase the risk of bridge damage/failure under extreme events. The impact of corrosion on seismic fragility of bridges has been well studied. However, the methodology used in most existing studies requires detailed information on the structural design and condition of a bridge, which is a major hindrance in conducting seismic risk assessment for a large population of bridges. Furthermore, existing studies do not adequately address the time-dependency of uncertainties associated with fragility curve development. This study presents a methodology to generate time-dependent seismic fragility curves for deteriorating highway bridges based only on the limited …
Midwest Roadside Safety Facility Expansion For Enhanced Research Capabilities, Joseph (Lj) Hajduch, Isaac Hansen, Jeff Schroeder, Hozhin Sleman, Ben Wortman
Midwest Roadside Safety Facility Expansion For Enhanced Research Capabilities, Joseph (Lj) Hajduch, Isaac Hansen, Jeff Schroeder, Hozhin Sleman, Ben Wortman
Honors Program: Senior Projects (Public)
As Civil Engineering students, this group was tasked with designing and proposing an engineering solution to a real-world problem. In this case, the Midwest Roadside Safety Facility in Lincoln, Nebraska was looking for a planned proposal to add an additional building to their property for the purpose of additional research and office space. The group decided on the name Zana Engineering – Zana translating to “highly educated” in Kurmanji – to function as the organization responsible for creating this proposal and presentation. Zana Engineering designed this plan on several key factors, most significantly utility, affordability, safety, sustainability, functionality, longevity, and …
The Influence Of Corrosion Mitigating Fluids On Post Tensioned Tendon Grout Properties And Steel To Grout Bond Strength, Sarita Ale Magar
The Influence Of Corrosion Mitigating Fluids On Post Tensioned Tendon Grout Properties And Steel To Grout Bond Strength, Sarita Ale Magar
USF Tampa Graduate Theses and Dissertations
Corrosion has been a persistent problem causing the failure of post-tensioned tendons in segmentally constructed bridges. To address this issue, the impregnation method has been considered where the corrosion-mitigating fluids are pressure injected into the interstitial spaces between the seven wires of steel strands. A previous study showed that this method was able to arrest corrosion. However, it compromised the bond strength between the steel and the strand. For that reason, this study aims to identify a fluid that can be impregnated into the interstitial spaces without sacrificing bond performance. The most promising fluid found in the study is an …
Field-Base Exploratory Study Of Microbial Activity In Eight Potable Water Storage Tanks In Barbados, Katelyn M. Long
Field-Base Exploratory Study Of Microbial Activity In Eight Potable Water Storage Tanks In Barbados, Katelyn M. Long
USF Tampa Graduate Theses and Dissertations
There have been many initiatives to combat the global phenomenon of water scarcity. Potable water storage tanks have become widely known among water insecure countries and communities to provide adequate water quantity and quality for consumer use. Despite ubiquitous use in many low- and middle-income communities (LMIC), knowledge of microbial activity inside potable water storage tanks is limited. Barbados is a Small Island Developing State (SIDS), labeled as a high income country, and also water scarce. The Barbados Water Authority (BWA) has adapted potable water storage tanks for hundreds of residents as a solution to water quantity and water quality …
Photolysis Of 3-Nitro-1,2,4-Triazol-5-One: Mechanisms And Products, Hunter W. Schroer, Esteban Londono, Xueshu Li, Hans Joachim Lehmler, William Arnold, Craig L. Just
Photolysis Of 3-Nitro-1,2,4-Triazol-5-One: Mechanisms And Products, Hunter W. Schroer, Esteban Londono, Xueshu Li, Hans Joachim Lehmler, William Arnold, Craig L. Just
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Insensitive munitions formulations that include 3-nitro-1,2,4-triazol-5-one (NTO) are replacing traditional explosive compounds. While these new formulations have superior safety characteristics, the compounds have greater environmental mobility, raising concern over potential contamination and cleanup of training and manufacturing facilities. Here, we examine the mechanisms and products of NTO photolysis in simulated sunlight to further inform NTO degradation in sunlit surface waters. We demonstrate that NTO produces singlet oxygen, and that dissolved oxygen increases the NTO photolysis rate in deionized water. The rate of NTO photolysis is independent of concentration and decreases slightly in the presence of Suwannee River Natural Organic Matter. …
Disturbances In Primary Visual Processing As A Function Of Healthy Aging, Seth D. Springer, Tara D. Erker, Mikki Schantell, Hallie J. Johnson, Madelyn P. Willett, Hannah J. Okelberry, Maggie P. Rempe, Anthony Wilson
Disturbances In Primary Visual Processing As A Function Of Healthy Aging, Seth D. Springer, Tara D. Erker, Mikki Schantell, Hallie J. Johnson, Madelyn P. Willett, Hannah J. Okelberry, Maggie P. Rempe, Anthony Wilson
Department of Agricultural and Biological Systems Engineering: Faculty Publications
For decades, visual entrainment paradigms have been widely used to investigate basic visual processing in healthy individuals and those with neurological disorders. While healthy aging is known to be associated with alterations in visual processing, whether this extends to visual entrainment responses and the precise cortical regions involved is not fully understood. Such knowledge is imperative given the recent surge in interest surrounding the use of flicker stimulation and entrainment in the context of identifying and treating Alzheimer’s disease (AD). In the current study, we examined visual entrainment in eighty healthy aging adults using magnetoencephalography (MEG) and a 15 Hz …
Characterization Of Bubble Transport In Porous Media Using A Microfluidic Channel, Ryan Haggerty, Dong Zhang, Jongwan Eun, Yusong Li
Characterization Of Bubble Transport In Porous Media Using A Microfluidic Channel, Ryan Haggerty, Dong Zhang, Jongwan Eun, Yusong Li
Department of Civil and Environmental Engineering: Faculty Publications
This study investigates the effect on varying flow rates and bubble sizes on gas–liquid flow through porous media in a horizontal microchannel. A simple bubble generation system was set up to generate bubbles with controllable sizes and frequencies, which directly flowed into microfluidic channels packed with different sizes of glass beads. Bubble flow was visualized using a high-speed camera and analyzed to obtain the change in liquid holdup. Pressure data were measured for estimation of hydraulic conductivity. The bubble displacement pattern in the porous media was viscous fingering based on capillary numbers and visual observation. Larger bubbles resulted in lower …
The Influence Of Bipolar Electrochemical Cell Geometry On The Studies Of Pitting Corrosion, Amin Kazem Ghamsari
The Influence Of Bipolar Electrochemical Cell Geometry On The Studies Of Pitting Corrosion, Amin Kazem Ghamsari
USF Tampa Graduate Theses and Dissertations
Bipolar electrochemistry (BPE) is a technique that provides a wireless alternative totraditional electrochemistry to elicit redox reactions. It has been utilized in different applications, including studying localized corrosion, gradient electrodeposition, propulsion of micromotors, and water treatment. The popularity of the method is not solely dependent on its wirelessness but more due to the simultaneous presence of cathodic and anodic poles on the same surface, which also begets its name as bipolar. The concept of the method is based on the polarization of conductive objects in an electric field in the presence of an electrolyte. In BPE, instead of controlling the …
Enhancement Of Himalayan Irregular Stone Masonry Buildings For Resilient Seismic Design, Shyam Sundar Khadka, Sabin Acharya, Ayush Acharya, Marc J. Veletzos
Enhancement Of Himalayan Irregular Stone Masonry Buildings For Resilient Seismic Design, Shyam Sundar Khadka, Sabin Acharya, Ayush Acharya, Marc J. Veletzos
Civil Engineering Faculty Publications
In the Himalayan region of Nepal, stone masonry has been used for centuries as the primary building material for structures with or without mud mortar. In three distinct remote rural villages, a thorough structural survey of approximately 223 buildings was conducted with an emphasis on their structural irregularities. The thickness of masonry walls frequently varied between floors, which caused mass irregularities. Openings in the front wall of the buildings were not symmetrical in the vertical direction, which caused in-plane discontinuity. There were also out-of-plane offset irregularities due to the cross wall on the ground floor. These buildings were irregular in …
Molecular And Cellular Level Characterization Of Cytoskeletal Mechanics Using A Quartz Crystal Microbalance, Emily M. Kerivan, Lyle Tobin, Mihir Basil, Dana N. Reinemann
Molecular And Cellular Level Characterization Of Cytoskeletal Mechanics Using A Quartz Crystal Microbalance, Emily M. Kerivan, Lyle Tobin, Mihir Basil, Dana N. Reinemann
Faculty and Student Publications
A quartz crystal microbalance (QCM) is an instrument that has the ability to measure nanogram-level changes in mass on a quartz sensor and is traditionally used to probe surface interactions and assembly kinetics of synthetic systems. The addition of dissipation monitoring (QCM-D) facilitates the study of viscoelastic systems, such as those relevant to molecular and cellular mechanics. Due to real-time recording of frequency and dissipation changes and single protein-level precision, the QCM-D is effective in interrogating the viscoelastic properties of cell surfaces and in vitro cellular components. However, few studies focus on the application of this instrument to cytoskeletal systems, …
Optimizing Locations And Sizes Of Asphalt Concrete Plants In Karbala, Iraq, Ghayath Ali, Sawsan R Mohammad, Alaa M. Abdulhussein
Optimizing Locations And Sizes Of Asphalt Concrete Plants In Karbala, Iraq, Ghayath Ali, Sawsan R Mohammad, Alaa M. Abdulhussein
Al-Bahir
This study develops and presents a methodology for determining the optimal geographic distribution and size of asphalt concrete plants in Karbala, Iraq, in order to minimize the cost of asphalt concrete produced. The purpose of this study is to discuss these points. The methodology can identify potential locations for asphalt concrete plants within a study area, considering the plants' operation and capital costs and the costs of transporting raw materials to the plants and asphalt concrete to demand centers. Matrix Laboratory (MATLAB) software have been used to program the methodology. This methodology has been applied to Karbala using actual data. …
Hyperspectral Reflectance For Determination Of Steel Rebar Corrosion And Cl− Concentration, Pengfei Ma, Liang Fan, Genda Chen
Hyperspectral Reflectance For Determination Of Steel Rebar Corrosion And Cl− Concentration, Pengfei Ma, Liang Fan, Genda Chen
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
In This Study, a New Method is Proposed to Determine Chloride Ion (Cl−) Concentration and Steel Rebar Corrosion from Hyperspectral Spectroscopy. Three Groups of Mortar Cubes with Water-To-Cement (W/c) Ratios of 0.5, 0.6, and 0.7 Were Subjected to Rapid Corrosion Testing in 3.5 Wt% NaCl Solution to Accelerate the Transport of Chloride Ions. Embedded Along the Centerline of Each Mortar Cube Was a Steel Rebar that Corroded When the Cl− Accumulation Around It Exceeded a Critical/threshold Concentration. Open Circuit Potential Was Measured to Characterize the Corrosion Possibility of Steel Rebar. Mortar Surfaces Were Scanned with a Hyperspectral Camera in the …
Wrong-Way Driving: Data Collection, Analysis, And Safety Countermeasures, Parisa Hosseini
Wrong-Way Driving: Data Collection, Analysis, And Safety Countermeasures, Parisa Hosseini
Theses and Dissertations
Wrong-way driving (WWD) crashes have been a long-lasting issue for transportation agencies during the past decades. According to the AAA Foundation's latest statistics, on divided highways, a total of 2,921 WWD fatal crashes were documented from 2010 to 2018, resulting in 3,546 fatalities. In order to analyze WWD events, this study attempts to initially develop a methodology to identify actual WWD crashes from potential WWD crashes in police reports by using text mining and machine learning techniques. Afterward, developing a hazard-based duration model, this study investigates the contributing factors related to the distance traveled by a wrong-way (WW) driver involved …
Evaluating The Environmental Impacts Of U.S. Historical Oil Spill Incidents, Yiming Liu, Hua Cai
Evaluating The Environmental Impacts Of U.S. Historical Oil Spill Incidents, Yiming Liu, Hua Cai
Graduate Industrial Research Symposium
The adverse impacts of extremely large oil spill incidents such as Deepwater Horizon Oil Spill have been widely studied in recent years. Catastrophic oil spill disasters such as Deepwater Horizon Oil Spill have been widely studied. While vast smaller oil spills, which also could result in significant amount of oil release, still lack attention.
This research assessed distributions and environmental impacts caused by historical oil spill incidents in U.S. We first analyzed the spatial and temporal characteristics of oil spills. Then the relationship between spillage amount and spill frequency is evaluated via statistical approaches. Last, based on a thorough literature …
Comprehensive Microenvironment Monitoring For The Productivity And Welfare Of Sows And Piglets, Jun Ho Kim
Comprehensive Microenvironment Monitoring For The Productivity And Welfare Of Sows And Piglets, Jun Ho Kim
Graduate Industrial Research Symposium
The world is facing increasing food demand and climate change. To improve piglet survivability and sow welfare through microenvironment management using precision technology, a USDA sponsored research project started in 2021 and is ongoing. A comprehensive yet low-cost system was designed and developed for continuous and real-time microenvironment monitoring in three rooms of Farrowing Building #1 at the Animal Sciences Research and Education Center, Purdue University. The system consists of two gas analyzers and 103 different sensors, including sensors in a weather station. The first trial of the project was conducted from Jan. 13 to Feb. 8, 2023, when the …
Rehabilitation Technologies To Abate Infiltration In Sanitary Sewers, Steve Youssef
Rehabilitation Technologies To Abate Infiltration In Sanitary Sewers, Steve Youssef
USF Tampa Graduate Theses and Dissertations
In urban coastal environments, sewer infrastructure is plagued by infiltration which seeps into aging and compromised pipes. Infiltration increases pumping costs, reduces treatment efficiency, and may trigger release of partially treated wastewater at water reclamation facilities. To restore pipes and abate infiltration, local utilities rely on structural and non-structural trenchless rehabilitation technologies. These methods are commonly used throughout the United States and the world due to their numerous benefits compared to traditional open-cut construction. However, limited data is available regarding their efficacy in reducing infiltration in sewer systems. In this study, we analysed infiltration in a small urban sewershed in …
Pan-Arctic Soil Moisture Control On Tundra Carbon Sequestration And Plant Productivity, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Beniamino Gioli, Barbara Bailey, George Burba, Eugénie S. Euskirchen, Jennifer D. Watts, Kyle A. Arndt, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Albertus J. Dolman, Roisin Commane, Charles E. Miller, Josh Hashemi, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Elyn R. Humphreys, Oliver Sonnentag, Gesa Meyer, Gabriel H. Gosselin, Philip Marsh, Walter C. Oechel
Pan-Arctic Soil Moisture Control On Tundra Carbon Sequestration And Plant Productivity, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Beniamino Gioli, Barbara Bailey, George Burba, Eugénie S. Euskirchen, Jennifer D. Watts, Kyle A. Arndt, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Albertus J. Dolman, Roisin Commane, Charles E. Miller, Josh Hashemi, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Elyn R. Humphreys, Oliver Sonnentag, Gesa Meyer, Gabriel H. Gosselin, Philip Marsh, Walter C. Oechel
Daugherty Water for Food Global Institute: Faculty Publications
Long-term atmospheric CO2 concentration records have suggested a reduction in the positive effect of warming on high-latitude carbon uptake since the 1990s. A variety of mechanisms have been proposed to explain the reduced net carbon sink of northern ecosystems with increased air temperature, including water stress on vegetation and increased respiration over recent decades. However, the lack of consistent long-term carbon flux and in situ soil moisture data has severely limited our ability to identify the mechanisms responsible for the recent reduced carbon sink strength. In this study, we used a record of nearly 100 site-years of eddy covariance …
Integrating Quality Assurance In Balance Mix Designs For Durable Asphalt Mixtures: State-Of-The-Art Literature Review, Yizhuang David Wang, Jun Liu, Jenny Liu
Integrating Quality Assurance In Balance Mix Designs For Durable Asphalt Mixtures: State-Of-The-Art Literature Review, Yizhuang David Wang, Jun Liu, Jenny Liu
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Delivering durable asphalt concrete within a reasonable cost is one of the great ambitions of pavement material engineers. This state-of-the-art review article documents the efforts spent in the past two decades to ensure the durability and performance of asphalt mixtures in mix design and production. A perspective with the attempt to integrate laboratory mix design, plant production quality assurance, and field place acceptance is applied in the review. The development of the performance specification and performance mix design is summarized. The paper categorizes performance specification into index-based performance specification and predictive performance specification that include performance-related specification and performance-based specification. …
Enhancement Of Heat-Cured Cement Paste With Tannic Acid, Jinrui Zhang, Ziye Kang, Youzhi Yang, Biqin Dong, Hongyan Ma
Enhancement Of Heat-Cured Cement Paste With Tannic Acid, Jinrui Zhang, Ziye Kang, Youzhi Yang, Biqin Dong, Hongyan Ma
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
The Improvement of Cement-Based Materials' Performance by Natural Organic Compounds Can Greatly Promote the Green and Sustainable Development of the Construction Industry. However, Such Compounds Are Not Widely Used Yet Because of their Retarding Effect on Cement. in This Study, the Retardation Effect of Tannic Acid (TA, a Well-Known Retarding Compound) is overcome and the Enhancing Effect is Achieved by Adding Less Than 0.1% Content and Curing Samples in Thermal Regime. Then the Mechanism of TA Enhancing Heat-Cured Cement Pastes is Studied Systematically. Mechanical Properties Results Suggest that Addition of 0.025% TA Can Reduce the Compressive and Flexural Strengths of …
Building Services Engineering March/April 2023
Building Services Engineering March/April 2023
Building Services Engineering
No abstract provided.
Application Of Connected Vehicle Data To Assess Safety On Roadways, Mandar Khanal, Nathaniel Edelmann
Application Of Connected Vehicle Data To Assess Safety On Roadways, Mandar Khanal, Nathaniel Edelmann
Civil Engineering Faculty Publications and Presentations
Using surrogate safety measures is a common method to assess safety on roadways. Surrogate safety measures allow for proactive safety analysis; the analysis is performed prior to crashes occurring. This allows for safety improvements to be implemented proactively to prevent crashes and the associated injuries and property damage. Existing surrogate safety measures primarily rely on data generated by microsimulations, but the advent of connected vehicles has allowed for the incorporation of data from actual cars into safety analysis with surrogate safety measures. In this study, commercially available connected vehicle data are used to develop crash prediction models for crashes at …