Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (11)
- Geological Engineering (10)
- Mining Engineering (8)
- Forest Sciences (6)
- Physical Sciences and Mathematics (6)
-
- Biology (5)
- Chemical Engineering (5)
- Social and Behavioral Sciences (4)
- Computer Sciences (3)
- Materials Science and Engineering (3)
- Transportation Engineering (3)
- Business (2)
- Mechanical Engineering (2)
- Atmospheric Sciences (1)
- Chemistry (1)
- Civil Engineering (1)
- Cognitive Science (1)
- Construction Engineering and Management (1)
- Electrical and Computer Engineering (1)
- Environmental Engineering (1)
- Geotechnical Engineering (1)
- Kinesiology (1)
- Mathematics (1)
- Oceanography and Atmospheric Sciences and Meteorology (1)
- Technology and Innovation (1)
- Publication Year
Articles 31 - 60 of 204
Full-Text Articles in Civil and Environmental Engineering
A Novel, Metal-Based Approach To Identify Residences With Lead Service Lines, Danielle Land, Grant D. Brown, David M. Cwiertny, Marc A. Edwards, Mona Hanna, Drew E. Latta, Michelle M. Scherer
A Novel, Metal-Based Approach To Identify Residences With Lead Service Lines, Danielle Land, Grant D. Brown, David M. Cwiertny, Marc A. Edwards, Mona Hanna, Drew E. Latta, Michelle M. Scherer
Michigan Tech Publications
There is an urgent need for rapid, cost-effective approaches to identify residences with lead service lines (LSLs). We evaluated whether analyzing water for corrosion-related metals could accurately identify residences with LSLs without relying on potentially inaccurate property records. We applied principal component analysis logistic regression (PCA-LR) and classification tree models using 28 analytes per bottle (including Pb, Cu, Zn, Fe, Al, and others) measured in 216 water samples collected in Flint, Michigan, in August 2015. The PCA-LR model achieved 87% accuracy (AUROC = 0.93) with 81% sensitivity and 90% specificity, while the classification tree model achieved 80% accuracy (AUROC = …
Enhancing Winter Climate Simulations Of The Great Lakes: Insights From A New Coupled Lake–Ice–Atmosphere (Cliav1) System On The Importance Of Integrating 3d Hydrodynamics With A Regional Climate Model, Pengfei Xue, Chenfu Huang, Yafang Zhong, Michael Notaro, Miraj Kayastha, Xing Zhou, Chuyan Zhao, Christa Peters-Lidard, Carlos Cruz, Eric Kemp
Enhancing Winter Climate Simulations Of The Great Lakes: Insights From A New Coupled Lake–Ice–Atmosphere (Cliav1) System On The Importance Of Integrating 3d Hydrodynamics With A Regional Climate Model, Pengfei Xue, Chenfu Huang, Yafang Zhong, Michael Notaro, Miraj Kayastha, Xing Zhou, Chuyan Zhao, Christa Peters-Lidard, Carlos Cruz, Eric Kemp
Michigan Tech Publications
The Laurentian Great Lakes significantly influence the climate of the Midwest and Northeast United States due to their vast thermal inertia, moisture source potential, and complex heat and moisture flux dynamics. This study presents a newly developed coupled lake–ice–atmosphere (CLIAv1) modeling system for the Great Lakes by coupling the National Aeronautics and Space Administration (NASA) Unified Weather Research and Forecasting (NU-WRF) regional climate model (RCM) with the three-dimensional (3D) Finite Volume Community Ocean Model (FVCOM) and investigates the impact of coupled dynamics on simulations of the Great Lakes’ winter climate. By integrating 3D lake hydrodynamics, CLIAv1 demonstrates superior performance in …
Integrating Recycled Acrylonitrile–Butadiene–Styrene Plastics From Electronic Waste With Carbon Black For Sustainable Asphalt Production, Sepehr Mohammadi, Dongzhao Jin, Zhanping You
Integrating Recycled Acrylonitrile–Butadiene–Styrene Plastics From Electronic Waste With Carbon Black For Sustainable Asphalt Production, Sepehr Mohammadi, Dongzhao Jin, Zhanping You
Michigan Tech Publications
As the global demand for electronic equipment continues to grow, many devices are being replaced more frequently, resulting in a rapid rise in electronic waste (e-waste), now the fastest growing waste stream worldwide. Motivated by this, the objective of this study is to present an environmentally friendly method to recycle acrylonitrile–butadiene–styrene (ABS), one of the most common e-waste plastics, by using it for asphalt production. In contrast to earlier methods of plastic-modified asphalt production involving complex pretreatments or complimentary additives unsuitable for plant-scale use, this study aims to demonstrate a practical, low-cost solution through the use of carbon black. This …
Reduction-Driven Mobilization Of Structural Fe In Clay Minerals With High Fe Content, Anke Neumann, Luiza Notini, W. A.P.Jeewantha Premaratne, Drew E. Latta, Michelle M. Scherer
Reduction-Driven Mobilization Of Structural Fe In Clay Minerals With High Fe Content, Anke Neumann, Luiza Notini, W. A.P.Jeewantha Premaratne, Drew E. Latta, Michelle M. Scherer
Michigan Tech Publications
Clay minerals contain significant amounts of Fe in their alumosilicate framework, and this structural Fe can be reduced and re-oxidized, constituting a potentially renewable source of reduction equivalents in sedimentary environments. However, dissolution and/or clay mineral transformations during microbial Fe reduction contradict this concept. Here, we investigate how Fe reduction and re-oxidation affect the propensity of Fe to be released from the clay mineral structure and use selective sequential extractions in combination with Mössbauer spectroscopy. Negligible amounts of Fe were released in the sequential extraction of high Fe content clay minerals NAu-1 and NAu-2. Once aqueous Fe(II) was added as …
Performance Characterization And Mechanistic Study Of Dry Process Wr/Sbs Composite Modified Asphalt Mixture, Hongfu Liu, Xiangyang Ren, Wenwen Ge, Zhengwei Yi, Dongzhao Jin, Xinghai Peng, Songtao Lv
Performance Characterization And Mechanistic Study Of Dry Process Wr/Sbs Composite Modified Asphalt Mixture, Hongfu Liu, Xiangyang Ren, Wenwen Ge, Zhengwei Yi, Dongzhao Jin, Xinghai Peng, Songtao Lv
Michigan Tech Publications
The dry process modification is characterized by simplicity, flexibility, low energy consumption, and low pollution, making it an ideal choice in pavement repair engineering. This study aims to optimize the use of waste rubber powder and SBS modifiers in dry process composite modification by preparing dry process WR/SBS composite modified particles (WR/SBS CMP) using a twin-screw extruder. The optimum mixing content of modified particles was determined through comparative analysis of pavement performance of dry process WR/SBS composite modified, wet-process SBS-modified, and matrix asphalt mixtures. The rheological properties and modification mechanism of the asphalt binder extracted from these mixtures were tested …
Minimum Ghg Emissions And Energy Consumption Of U.S. Pet And Polyolefin Packaging Supply Chains In A Circular Economy, Utkarsh S. Chaudhari, Abhishek Patil, Tasmin Hossain, David Watkins, Damon S. Hartley, Barbara K. Reck, Robert Handler, Anne T. Johnson, Vicki S. Thompson, David Shonnard
Minimum Ghg Emissions And Energy Consumption Of U.S. Pet And Polyolefin Packaging Supply Chains In A Circular Economy, Utkarsh S. Chaudhari, Abhishek Patil, Tasmin Hossain, David Watkins, Damon S. Hartley, Barbara K. Reck, Robert Handler, Anne T. Johnson, Vicki S. Thompson, David Shonnard
Michigan Tech Publications
There is a wide agreement on the urgency of transforming linear management of plastics towards a circular economy model. However, no clear pathways exist as to required recycling technologies involved and system-wide environmental impacts. This study explores such pathways in the U.S. for the most commonly used packaging plastics through a combination of mechanical and emerging advanced recycling technologies. A system optimization model aimed at minimizing environmental impacts was developed to determine optimal end-of-life (EOL) management and locations of existing and emerging U.S. recycling infrastructures. Our study includes material flows from virgin resin production through semi-manufacturing processes to existing EOL …
Causation Analysis Of Crane-Related Accident Reports By Utilizing Chatgpt And Complex Networks, Yifan Wang, Junyu Chen, Bo Xiao, Shane T. Mueller, Jingjing Guo
Causation Analysis Of Crane-Related Accident Reports By Utilizing Chatgpt And Complex Networks, Yifan Wang, Junyu Chen, Bo Xiao, Shane T. Mueller, Jingjing Guo
Michigan Tech Publications
This study integrates ChatGPT and complex network (CN) techniques into an accident analysis framework designed to reduce manual effort in accident causation analysis. The proposed framework supports construction stakeholders in extracting causal factors (CFs) from accident reports and identifying both critical CFs and key causal paths. A multistep research design was adopted to develop and validate this novel framework for analyzing crane-related construction accident reports using ChatGPT and CN techniques. First, ChatGPT was prompted to extract CFs from a database of crane-related accident reports. Second, evaluation metrics and an expert questionnaire survey were developed to assess ChatGPT’s performance in CF …
A Case Study Of Pavement Construction Materials For Wet-Freeze Regions: The Application Of Waste Glass Aggregate And High-Content Rubber Modified Asphalt, Kai Xin, Meng Wu, Dongzhao Jin, Zhanping You
A Case Study Of Pavement Construction Materials For Wet-Freeze Regions: The Application Of Waste Glass Aggregate And High-Content Rubber Modified Asphalt, Kai Xin, Meng Wu, Dongzhao Jin, Zhanping You
Michigan Tech Publications
Pavement systems in wet-freeze regions are prone to cracking, rutting, and moisture damage, making it challenging to incorporate recycled materials into asphalt mixtures in a way that enhances sustainability while maintaining performance and constructability. This study investigates and demonstrates the combined benefits of using processed waste glass in a leveling course and high-content crumb rubber in a surface course, focusing on both laboratory and full-scale field assessments in a wet-freeze region of northern Michigan. A leveling course containing 10% waste glass aggregate and a surface course using 16% crumb rubber (by binder weight) modified asphalt were designed with low air …
Subsurface Heatwaves In Lakes, R. Iestyn Woolway, Miraj Kayastha, Yan Tong, Lian Feng, Haoran Shi, Pengfei Xue
Subsurface Heatwaves In Lakes, R. Iestyn Woolway, Miraj Kayastha, Yan Tong, Lian Feng, Haoran Shi, Pengfei Xue
Michigan Tech Publications
Lake heatwaves (extreme hot water events) can substantially disrupt aquatic ecosystems. Although surface heatwaves are well studied, their vertical structures within lakes remain largely unexplored. Here we analyse the characteristics of subsurface lake heatwaves (extreme hot events occurring below the surface) using a spatiotemporal modelling framework. Our findings reveal that subsurface heatwaves are frequent, often longer lasting but less intense than surface events. Deep-water heatwaves (bottom heatwaves) have increased in frequency (7.2 days decade−1), duration (2.1 days decade−1) and intensity (0.2 °C days decade−1) over the past 40 years. Moreover, vertically compounding heatwaves, where extreme heat occurs simultaneously at the …
Bio-Inspired Highest Lift-To-Drag-Ratio Fin Shape And Angle For Maximum Surfboard Stability: Flow Around Fish Fins, Megan S. Macneill, Brian Barkdoll
Bio-Inspired Highest Lift-To-Drag-Ratio Fin Shape And Angle For Maximum Surfboard Stability: Flow Around Fish Fins, Megan S. Macneill, Brian Barkdoll
Michigan Tech Publications
Wave surfing is a multi-billion dollar industry involving both maneuverability and speed, yet little research has been performed regarding the highest lift-to-drag-ratio fin shape for these competing qualities. Numerical modeling and laboratory experiments were performed here to identify a bio-inspired fin shape that maximized lateral stability and minimized drag forces, in order to increase surfing maneuverability. Nine fins based on dorsal fins of real fish were tested. Both the CFD and laboratory experiments confirmed that the fin of the same shape as that of the Short-Finned Pilot Whale at an angle of attack of 10° had the greatest lift-to-drag ratios. …
Denitrification Processes, Inhibitors, And Their Implications In Ground Improvement, Yasaman Abdolvand, Mohammadhossein Sadeghiamirshahidi, Ishi Keenum
Denitrification Processes, Inhibitors, And Their Implications In Ground Improvement, Yasaman Abdolvand, Mohammadhossein Sadeghiamirshahidi, Ishi Keenum
Michigan Tech Publications
Ureolysis and denitrification are the two major microbial metabolic pathways commonly used in Microbially induced calcite precipitation (MICP) for geoengineering applications. Although ureolysis is generally the more efficient pathway, the denitrification pathway has gained more attention recently because a diverse group of bacteria can precipitate calcite via denitrification, and no harmful byproduct is generated provided that the reduction of nitrate to nitrogen gas is complete. There are, however, many environmental factors that could inhibit or reduce the efficiency of the denitrification process in soil. Some examples of these factors include salinity, pH, temperature, biodiversity (abundance and species of denitrifiers and …
Denitrification Processes, Inhibitors, And Their Implications In Ground Improvement, Yasaman Abdolvand, Mohammadhossein Sadeghiamirshahidi, Ishi Keenum
Denitrification Processes, Inhibitors, And Their Implications In Ground Improvement, Yasaman Abdolvand, Mohammadhossein Sadeghiamirshahidi, Ishi Keenum
Michigan Tech Publications
Ureolysis and denitrification are the two major microbial metabolic pathways commonly used in Microbially induced calcite precipitation (MICP) for geoengineering applications. Although ureolysis is generally the more efficient pathway, the denitrification pathway has gained more attention recently because a diverse group of bacteria can precipitate calcite via denitrification, and no harmful byproduct is generated provided that the reduction of nitrate to nitrogen gas is complete. There are, however, many environmental factors that could inhibit or reduce the efficiency of the denitrification process in soil. Some examples of these factors include salinity, pH, temperature, biodiversity (abundance and species of denitrifiers and …
Direct Water Reuse: A Hydraulic Economic Analysis Of Connecting The Wastewater Treatment Effluent To Water Treatment Influent, Brian Barkdoll, Amber G. Strutz
Direct Water Reuse: A Hydraulic Economic Analysis Of Connecting The Wastewater Treatment Effluent To Water Treatment Influent, Brian Barkdoll, Amber G. Strutz
Michigan Tech Publications
Climate change is causing increased flooding and droughts. Droughts can cause drinking water sources to run dry. Therefore, recycling water from the wastewater plant effluent to the water treatment plant influent, also called ‘direct reuse’ is becoming necessary. A connection between a city's wastewater treatment plant (WWTP) effluent and water treatment plant (WTP) influent via pipe was simulated to provide an understanding of the capital costs and feasibility of execution. Hydraulic pipe-flow and pump equations were used to calculate the pipe and pump sizes needed for various flow rate and elevation head values. Various flow rate recycle rates were modeled …
Coastal Environments: Lidar Mapping Of Copper Tailings Impacts, Particle Retention Of Copper, Leaching, And Toxicity, W. Charles Kerfoot, Gary Swain, Robert Regis, Varsha K. Raman, Colin N. Brooks, Chris Cook, Et. Al.
Coastal Environments: Lidar Mapping Of Copper Tailings Impacts, Particle Retention Of Copper, Leaching, And Toxicity, W. Charles Kerfoot, Gary Swain, Robert Regis, Varsha K. Raman, Colin N. Brooks, Chris Cook, Et. Al.
Michigan Tech Publications
Tailings generated by mining account for the largest world-wide waste from industrial activities. As an element, copper is relatively uncommon, with low concentrations in sediments and waters, yet is very elevated around mining operations. On the Keweenaw Peninsula of Michigan, USA, jutting out into Lake Superior, 140 mines extracted native copper from the Portage Lake Volcanic Series, part of an intercontinental rift system. Between 1901 and 1932, two mills at Gay (Mohawk, Wolverine) sluiced 22.7 million metric tonnes (MMT) of copper-rich tailings (stamp sands) into Grand (Big) Traverse Bay. About 10 MMT formed a beach that has migrated 7 km …
Environmental Life Cycle Assessment Of Class A Biosolids Production Using Conventional And Low-Cost, Low-Tech Processes At Small Water Resource Recovery Facilities, Janna Brown, Robert Handler, Jennifer G. Becker, Eric Seagren
Environmental Life Cycle Assessment Of Class A Biosolids Production Using Conventional And Low-Cost, Low-Tech Processes At Small Water Resource Recovery Facilities, Janna Brown, Robert Handler, Jennifer G. Becker, Eric Seagren
Michigan Tech Publications
Producing Class A biosolids that can be distributed or land-applied without restriction is a beneficial way to reuse wastewater treatment solids. For small water resource recovery facilities (WRRFs) in particular, low-cost, low-tech (LCLT) processes may be an appealing alternative to conventional technologies for producing Class A biosolids, such as processes to further reduce pathogens (PFRPs). Conventional Class A biosolids treatment processes tend to be energy-intensive and involve complex equipment and operations. However, a systematic comparison of the overall sustainability of conventional processes and LCLT alternatives for producing Class A biosolids to aid decision makers in selecting treatment processes is not …
Generating Synthetic Images For Construction Machinery Data Augmentation Utilizing Context-Aware Object Placement, Yujie Lu, Bo Liu, Wei Wei, Bo Xiao, Zhangding Liu, Wensheng Li
Generating Synthetic Images For Construction Machinery Data Augmentation Utilizing Context-Aware Object Placement, Yujie Lu, Bo Liu, Wei Wei, Bo Xiao, Zhangding Liu, Wensheng Li
Michigan Tech Publications
Dataset is an essential factor influencing the accuracy of computer vision (CV) tasks in construction. Although image synthesis methods can automatically generate substantial annotated construction data compared to manual annotation, existing challenges limited the CV task accuracy, such as geometric inconsistency. To efficiently generate high-quality data, a synthesis method of construction data was proposed utilizing Unreal Engine (UE) and PlaceNet. First, the inpainting algorithm was applied to generate pure backgrounds, followed by multi-angle foreground capture within the UE. Then, the Swin Transformer and improved loss functions were integrated into PlaceNet to enhance the feature extraction of construction backgrounds, facilitating object …
Great Lakes Water Level Trends Using The Moving Statistics Method, With Implications For Climate Change And Cities, Brian Barkdoll, Opeyemi Alamutu
Great Lakes Water Level Trends Using The Moving Statistics Method, With Implications For Climate Change And Cities, Brian Barkdoll, Opeyemi Alamutu
Michigan Tech Publications
Increasing magnitudes of precipitation and evaporation are predicted for future climate change. Knowing whether these trends are occurring can help water managers plan with respect to future erosion, flooding, and design changes for shoreline infrastructure. Data from all the Laurentian Great Lakes (Erie, Michigan-Huron, Ontario, St. Clair, and Superior) were analyzed here to determine whether these trends are being realized. The MovingStatistics Method is used here using the moving average and moving standard deviation. It was found that Lakes Erie and St. Clair had the highest moving average trend of 0.5 mm/month, while Lake Ontario had the highest moving standard …
Fatigue Life Of Pre-Cut Seam Asphalt Mixture Composite Beams: A Combined Study Of Fatigue Damage Evolution And Reflective Cracking Extension, Hongfu Liu, Hong Lu, Xun Zhu, Zhengwei Yi, Xin Yu, Dongzhao Jin, Xinghai Peng, Songtao Lv
Fatigue Life Of Pre-Cut Seam Asphalt Mixture Composite Beams: A Combined Study Of Fatigue Damage Evolution And Reflective Cracking Extension, Hongfu Liu, Hong Lu, Xun Zhu, Zhengwei Yi, Xin Yu, Dongzhao Jin, Xinghai Peng, Songtao Lv
Michigan Tech Publications
This study investigated the impact of reflective cracking on the fatigue performance of asphalt pavements after milling and resurfacing under various conditions. Fatigue life was assessed through four-point flexural fatigue tests, while the crack extension pattern of composite beams was analyzed by digital image correlation (DIC) at both macroscopic and microscopic scales. Evaluation parameters such as stress ratios, immersion time, porosity, and types of viscous oils were assessed. A fatigue life prediction model of composite beams was established, accounting for the combined influence of these factors. To enhance the accuracy of determining composite beam failure, the critical fatigue damage was …
Great Lakes Wave Height Trends, Erv Kraft, Brian Barkdoll
Great Lakes Wave Height Trends, Erv Kraft, Brian Barkdoll
Michigan Tech Publications
With the advent of the industrial revolution, greenhouse gases have been emitted into the atmosphere causing the alteration of weather across the globe. These gases have caused the global temperature to warm. This has also caused a change in precipitation, wind speeds, and wave heights. The Great Lakes have many cities located on their shores and millions of people are affected by waves. Effects include shoreline erosion, infrastructure damage, and loss of valuable property and lives. It is imperative to future planning and engineering that the trends of wave height are understood. This study uses linear regression, a well-known and …
Performance Of Optimized Composition Of Epoxy Resin Adhesive Used In High Friction Surface Treatment, Jiapeng Li, Xiao Huan, Shubing Wang, Yanping Sheng, Dahui Xu, Zhanping You
Performance Of Optimized Composition Of Epoxy Resin Adhesive Used In High Friction Surface Treatment, Jiapeng Li, Xiao Huan, Shubing Wang, Yanping Sheng, Dahui Xu, Zhanping You
Michigan Tech Publications
The High Friction Surface Treatment (HFST) paving technique is widely employed in engineering practices globally, serving to enhance the long-term anti-skid performance of pavements. However, there still exist significant gaps in research regarding the modified and optimized composition and corresponding content of the polymer binding materials used in HFST, as well as the performance of the pavements laid with modified and optimized blended aggregates during service. To address these issues, this research first modified and optimized the composition ratio of traditional epoxy resin materials. Subsequently, a toughened, high-flow epoxy bonding system suitable for the maintenance of concrete pavements was prepared. …
Performance Evaluation Of Bio-Oil And High Rubber Content Modified Asphalt: More Effective Waste Utilization, Zihao Ju, Dongdong Ge, Songtao Lv, Dongzhao Jin, Yanhua Xue, Jianping Xian, Wenhui Zhang
Performance Evaluation Of Bio-Oil And High Rubber Content Modified Asphalt: More Effective Waste Utilization, Zihao Ju, Dongdong Ge, Songtao Lv, Dongzhao Jin, Yanhua Xue, Jianping Xian, Wenhui Zhang
Michigan Tech Publications
In this study, the bio-oil was used to reduce the viscosity and preparation temperature of high content of rubber-modified asphalt. The high rubber content modified bio-asphalt (RMBA) was prepared, the rubber and bio-oil contents were 20 %-30 % and 5 %-15 % (mass ratio of neat asphalt), respectively. The viscosity, temperature sweep (TS), frequency sweep (FS), multi-stress creep recovery (MSCR), and bending beam rheometer (BBR) tests were performed to assess the properties of RMBA. The Fourier Transform infrared spectroscopy (FTIR), Fluorescence microscopy (FM), and Scanning electron microscope (SEM) tests were conducted to explore the microscopic morphology of RMBA. Besides, the …
Performance Evaluation Of Surface Treatment Waste Glass As Aggregate In Asphalt Mixture, Miao Yu, Dongzhao Jin, Yu Liu, Zhanping You, Yalong Li
Performance Evaluation Of Surface Treatment Waste Glass As Aggregate In Asphalt Mixture, Miao Yu, Dongzhao Jin, Yu Liu, Zhanping You, Yalong Li
Michigan Tech Publications
Surface modification is a crucial strategy for enhancing the pavement performance of waste glass hot mix asphalt (HMA) mixtures. This study conducts a comparative analysis of various surface modification techniques to pinpoint the key factors that influence the interfacial interaction between waste glass and asphalt. To assess the performance of asphalt mixtures containing surface-treated waste glass, the study employed methods such as Energy Dispersive X-ray Spectroscopy (EDS), boiling water tests, and contact angle measurements, which helped to quantify surface morphology and the effectiveness of different treatments. The evaluation also included assessments of water stability, dynamic stability, small beam bending, and …
Assessing Visibility At Highway-Rail Grade Crossings Using Light Detection And Ranging (Lidar) Technology, Mohsen Naghdi, Pasi T. Lautala, Abdolmajid Erfani
Assessing Visibility At Highway-Rail Grade Crossings Using Light Detection And Ranging (Lidar) Technology, Mohsen Naghdi, Pasi T. Lautala, Abdolmajid Erfani
Michigan Tech Publications
In 2022, 2034 incidents occurred at highway-rail grade crossings (HRGCs) in the United States, posing significant risks such as fatalities, injuries, and property damage. These incidents underscore the need for effective prevention and mitigation strategies. With over 212,000 public and private HRGCs nationwide, safety monitoring is challenging, as traditional inspections primarily rely on manual assessments. Obstructed sightlines at HRGCs further increase safety risks by limiting road users' ability to see approaching trains. Although previous studies have addressed behavioral and safety issues, the literature currently lacks quantitative data analysis of sightlines at HRGCs. This study aims to address this gap by …
Durability Investigation Of Ultra-Thin Polyurethane Wearing Course For Asphalt Pavement, Wenguang Wang, Baodong Liu, Dongzhao Jin, Miao Yu, Junsen Zeng
Durability Investigation Of Ultra-Thin Polyurethane Wearing Course For Asphalt Pavement, Wenguang Wang, Baodong Liu, Dongzhao Jin, Miao Yu, Junsen Zeng
Michigan Tech Publications
In this study, a wear-resistant ultra-thin wear layer was fabricated with polyurethane as an adhesive to investigate its durability for pavement applications. Its road performance was investigated based on indoor tests. First, the abrasion test was performed using a tire–pavement dynamic friction analyzer (TDFA), and the surface elevation information of the wear layer was obtained by laser profile scanning. The relationship between the anti-skid properties of the wear layer and the macro-texture was analyzed. Second, a Fourier infrared spectrometer and scanning electron microscope were employed to analyze the evolution of polyurethane aging properties in the pull-out test and accelerated ultraviolet …
Study On The Storage Stability And Rheological Property Of Bio-Oil/Lignin Composite-Modified Asphalt, Guixiu Guo, Junfeng Gao, Dongzhao Jin, Xuan Wang, Yanqiu Bi, Peng Guo
Study On The Storage Stability And Rheological Property Of Bio-Oil/Lignin Composite-Modified Asphalt, Guixiu Guo, Junfeng Gao, Dongzhao Jin, Xuan Wang, Yanqiu Bi, Peng Guo
Michigan Tech Publications
The objective of this study is to investigate the storage stability and rheological property of bio-oil/lignin composite-modified asphalt. The composite-modified asphalt with different proportions of bio-oil was prepared and cured at 105 °C, 135 °C, and 165 °C for 24 h and 48 h. The storage stability of the composite-modified asphalt was evaluated based on the softening point difference, the storage stability index derived from rotational viscosity, the segregation rate based on temperature sweep, and the non-recoverable creep compliance measured through the Multiple Stress Creep Recovery test. The storage stability of bio-oil/lignin composite-modified asphalt was evaluated through testing and analysis …
Verifying An Improved Intermittent Water Distribution Network Analysis Method Based On Epa-Swmm, Dondu Sarisen, Raziyeh Farmani, David W. Watkins, Brian Barkdoll, Brian Rivers, Chao Zhang, Fayyaz Ali Memon
Verifying An Improved Intermittent Water Distribution Network Analysis Method Based On Epa-Swmm, Dondu Sarisen, Raziyeh Farmani, David W. Watkins, Brian Barkdoll, Brian Rivers, Chao Zhang, Fayyaz Ali Memon
Michigan Tech Publications
Modelling Intermittent Water Supply (IWS) presents challenges, as traditional hydraulic methods based on EPANET are often inadequate due to their inability to simulate the network filling process. While EPA-SWMM (EPA’s Storm Water Management Model)-based methods enhance IWS analysis, they remain network-specific and lack universal applicability. This study aims to calibrate and verify an improved EPA-SWMM-based model on a 6 m × 5 m laboratory-scale IWS. Experiments were conducted to capture flow rate data from demand nodes under various conditions. The EPA-SWMM model, based on uncontrolled outlets with flow rate varying by pressure, was calibrated using, an automated procedure that integrated …
Laboratory Evaluation And Field Demonstration Of Cold In-Place Recycling Asphalt Mixture In Michigan Low-Volume Road, Dongzhao Jin, Lei Yin, Lance Malburg, Zhanping You
Laboratory Evaluation And Field Demonstration Of Cold In-Place Recycling Asphalt Mixture In Michigan Low-Volume Road, Dongzhao Jin, Lei Yin, Lance Malburg, Zhanping You
Michigan Tech Publications
Cold-in place recycling (CIR) is a promising technology for the rehabilitation of asphalt pavements. However, the CIR asphalt pavement constructed in the field often has high air voids due to the presence of moisture during construction, and the moisture susceptibility of the pavement is crucial in determining its service life. Therefore, the objective of this research was to assess the laboratory performance of CIR asphalt mixes under freeze-thaw conditions (The mix prior to being subjected to freezing and thawing is labeled as "dry condition", while the mix that was placed in a refrigerator at –18 °C for 16 h and …
Automated Flood Prediction Along Railway Tracks Using Remotely Sensed Data And Traditional Flood Models, Abdul Rashid Zakaria, Thomas Oommen, Pasi Lautala
Automated Flood Prediction Along Railway Tracks Using Remotely Sensed Data And Traditional Flood Models, Abdul Rashid Zakaria, Thomas Oommen, Pasi Lautala
Michigan Tech Publications
Ground hazards are a significant problem in the global economy, costing millions of dollars in damage each year. Railroad tracks are vulnerable to ground hazards like flooding since they traverse multiple terrains with complex environmental factors and diverse human developments. Traditionally, flood-hazard assessments are generated using models like the Hydrological Engineering Center–River Analysis System (HEC-RAS). However, these maps are typically created for design flood events (10, 50, 100, 500 years) and are not available for any specific storm event, as they are not designed for individual flood predictions. Remotely sensed methods, on the other hand, offer precise flood extents only …
How Could Future Climate Conditions Reshape A Devastating Lake-Effect Snow Storm?, Miraj Kayastha, Chenfu Huang, Jiali Wang, Yun Qian, Zhao Yang, T. C. Chakraborty, William J. Pringle, Robert D. Hetland, Pengfei Xue
How Could Future Climate Conditions Reshape A Devastating Lake-Effect Snow Storm?, Miraj Kayastha, Chenfu Huang, Jiali Wang, Yun Qian, Zhao Yang, T. C. Chakraborty, William J. Pringle, Robert D. Hetland, Pengfei Xue
Michigan Tech Publications
Lake-effect snow (LES) storms, characterized by heavy convective precipitation downwind of large lakes, pose significant coastal hazards with severe socioeconomic consequences in vulnerable areas. In this study, we investigate how devastating LES storms could evolve in the future by employing a storyline approach, using the LES storm that occurred over Buffalo, New York, in November 2022 as an example. Using a Pseudo-Global Warming method with a fully three-dimensional two-way coupled lake-land-atmosphere modeling system at a cloud-resolving 4 km resolution, we show a 14% increase in storm precipitation under the end-century warming. This increase in precipitation is accompanied by a transition …
Detection Of Wintertime Green Vegetated Cover Using Object-Based Classification With Open-Source Remote Sensing And Geospatial Technologies, Jae Sung Kim, Sara P. Syswerda, Sigrid D. P. Smith
Detection Of Wintertime Green Vegetated Cover Using Object-Based Classification With Open-Source Remote Sensing And Geospatial Technologies, Jae Sung Kim, Sara P. Syswerda, Sigrid D. P. Smith
Michigan Tech Publications
It is important to detect wintertime green vegetated cover (WGVC), since it includes cover crop information, which is one of the most important agricultural best management practices used today. Related to this, cover crop area, which is part of WGVC, has been estimated using survey methods traditionally, but remote sensing can be used as a more time- and cost-effective assessment. Previously developed pixel-based methods to assess cover crops using remote sensing can have a salt-and-pepper effect, which lowers classification accuracy. Therefore, object-based classification was applied to estimate the spatial distribution of WGVC across the entire state of Delaware. To reduce …