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Articles 1 - 30 of 137
Full-Text Articles in Civil and Environmental Engineering
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, Part 2
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 …
To What Extent Do Water Reuse Treatments Reduce Antibiotic Resistance Indicators? A Comparison Of Two Full-Scale Systems, Ishi Keenum, Jeanette Calarco, Haniyyah Majeed, E. Eldridge Hager-Soto, Charles Bott, Emily Garner, Valerie J. Harwood, Amy Pruden
To What Extent Do Water Reuse Treatments Reduce Antibiotic Resistance Indicators? A Comparison Of Two Full-Scale Systems, Ishi Keenum, Jeanette Calarco, Haniyyah Majeed, E. Eldridge Hager-Soto, Charles Bott, Emily Garner, Valerie J. Harwood, Amy Pruden
Michigan Tech Publications, Part 2
Water reuse is an essential strategy for reducing water demand from conventional sources, alleviating water stress, and promoting sustainability, but understanding the effectiveness of associated treatment processes as barriers to the spread of antibiotic resistance is an important consideration to protecting human health. We comprehensively evaluated the reduction of antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) in two field-operational water reuse systems with distinct treatment trains, one producing water for indirect potable reuse (ozone/biologically-active carbon/granular activated carbon) and the other for non-potable reuse (denitrification-filtration/chlorination) using metagenomic sequencing and culture. Relative abundances of total ARGs/clinically-relevant ARGs and cultured ARB were …
Sanitation In Urban Areas May Limit The Spread Of Antimicrobial Resistance Via Flies, Drew Capone, Oliver Cumming, Abeoseh Flemister, Victor Ilevbare, Seth R. Irish, Ishi Keenum, Jackie Knee, Rassul Nala, Joe Brown
Sanitation In Urban Areas May Limit The Spread Of Antimicrobial Resistance Via Flies, Drew Capone, Oliver Cumming, Abeoseh Flemister, Victor Ilevbare, Seth R. Irish, Ishi Keenum, Jackie Knee, Rassul Nala, Joe Brown
Michigan Tech Publications, Part 2
Synanthropic filth flies are common where sanitation is poor and fecal wastes are accessible to them. These flies have been proposed as mechanical vectors for the localized transport of fecal microbes including antimicrobial resistant (AMR) organisms and associated antimicrobial resistance genes (ARGs), increasing exposure risks. We evaluated whether an onsite sanitation intervention in Maputo, Mozambique reduced the concentration of enteric bacteria and the frequency of detection of ARGs carried by flies collected in household compounds of low-income neighborhoods. Additionally, we assessed the phenotypic resistance profile of Enterobacteriaceae isolates recovered from flies during the pre-intervention phase. After fly enumeration at study …
Research And Comparison Of Pavement Performance Prediction Based On Neural Networks And Fusion Transformer Architecture, Hui Yao, Ke Han, Yanhao Liu, Dawei Wang, Zhanping You
Research And Comparison Of Pavement Performance Prediction Based On Neural Networks And Fusion Transformer Architecture, Hui Yao, Ke Han, Yanhao Liu, Dawei Wang, Zhanping You
Michigan Tech Publications, Part 2
The decision-making process for pavement maintenance from a scientific perspective is based on accurate predictions of pavement performance. To improve the rationality of pavement performance indicators, comprehensive consideration of various influencing factors is necessary. To this end, four typical pavement performance indicators (i.e., Rutting Depth, International Roughness Index, Longitudinal Cracking, and Alligator Cracking) were predicted using the Long Term Pavement Performance (LTPP) database. Two types of data, i.e., local input variables and global input variables, were selected, and S-ANN and L-ANN models were constructed using a fully connected neural network. A comparative analysis of the predictive outcomes reveals the superior …
Suitability Of The Height Above Nearest Drainage (Hand) Model For Flood Inundation Mapping In Data-Scarce Regions: A Comparative Analysis With Hydrodynamic Models, Navin Tony Thalakkottukara, Jobin Thomas, Melanie Watkins, Benjamin C. Holland, Thomas Oommen, Himanshu Grover
Suitability Of The Height Above Nearest Drainage (Hand) Model For Flood Inundation Mapping In Data-Scarce Regions: A Comparative Analysis With Hydrodynamic Models, Navin Tony Thalakkottukara, Jobin Thomas, Melanie Watkins, Benjamin C. Holland, Thomas Oommen, Himanshu Grover
Michigan Tech Publications, Part 2
Unprecedented floods from extreme rainfall events worldwide emphasize the need for flood inundation mapping for floodplain management and risk reduction. Access to flood inundation maps and risk evaluation tools remains challenging in most parts of the world, particularly in rural regions, leading to decreased flood resilience. The use of hydraulic and hydrodynamic models in rural areas has been hindered by excessive data and computational requirements. In this study, we mapped the flood inundation in Huron Creek watershed, Michigan, USA for an extreme rainfall event (1000-year return period) that occurred in 2018 (Father’s Day Flood) using the Height Above Nearest Drainage …
Valorization Of Spent Vetiver Roots For Biochar Generation, Sameer Neve, Dibyendu Sarkar, Manas Warke, Teresa Bandosz, Rupali Datta
Valorization Of Spent Vetiver Roots For Biochar Generation, Sameer Neve, Dibyendu Sarkar, Manas Warke, Teresa Bandosz, Rupali Datta
Michigan Tech Publications, Part 2
Vetiver root is widely used to produce essential oils in the aromatherapy industry. After the extraction of oil, the roots are disposed of as waste. The central objective of this research was to explore the conversion of this waste into a resource using a circular economy framework. To generate biochar, vetiver roots were pyrolyzed at different temperatures (300, 500, and 700 °C) and residence times (30, 60, and 120 min). Analysis showed the root biochar generated at 500 °C and held for 60 min had the highest surface area of 308.15 m2/g and a yield of 53.76%, in addition to …
Encoder–Decoder With Pyramid Region Attention For Pixel-Level Pavement Crack Recognition, Hui Yao, Yanhao Liu, Haotian Lv, Ju Huyan, Zhanping You, Yue Hou
Encoder–Decoder With Pyramid Region Attention For Pixel-Level Pavement Crack Recognition, Hui Yao, Yanhao Liu, Haotian Lv, Ju Huyan, Zhanping You, Yue Hou
Michigan Tech Publications, Part 2
Timely and accurate extraction of pavement crack information is crucial to maintain service conditions and structural safety for infrastructures and reduce further road maintenance costs. Currently, deep learning techniques for automated pavement crack detection are far superior to traditional manual approaches in both speed and accuracy. However, existing deep learning models may easily lose crack details when processing images containing complex background textures or other noises. Although many studies have alleviated this challenge by introducing attention mechanisms, especially the non-local (NL) block, which has the ability to efficiently capture long-range dependencies to facilitate crack pixel capture, the huge computational cost …
Compatibility Investigation Of Waste Plastics In Bitumen Via A Molecular Dynamics Method, Hui Yao, Xin Li, Hancheng Dan, Qingli Dai, Zhanping You
Compatibility Investigation Of Waste Plastics In Bitumen Via A Molecular Dynamics Method, Hui Yao, Xin Li, Hancheng Dan, Qingli Dai, Zhanping You
Michigan Tech Publications, Part 2
The compatibility between waste plastic polymers and bitumen is the most challenging issue hindering the improvement of modified bitumen performance. The current practice of recycled waste plastics includes the use of polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), etc. This study was designed to investigate the compatibility of different waste plastic polymers with bitumen binders by conducting molecular dynamics (MD) simulations at different temperatures. The molecular models of these materials were constructed in this study for the compatibility analysis, and they include the base bitumen, polymers (PVC, PP, and PE), polymer- bitumen blending systems. Using the output and related calculations …
Urban Versus Lake Impacts On Heat Stress And Its Disparities In A Shoreline City, T. C. Chakraborty, Jiali Wang, Yun Qian, William Pringle, Zhao Yang, Pengfei Xue
Urban Versus Lake Impacts On Heat Stress And Its Disparities In A Shoreline City, T. C. Chakraborty, Jiali Wang, Yun Qian, William Pringle, Zhao Yang, Pengfei Xue
Michigan Tech Publications, Part 2
Shoreline cities are influenced by both urban-scale processes and land-water interactions, with consequences on heat exposure and its disparities. Heat exposure studies over these cities have focused on air and skin temperature, even though moisture advection from water bodies can also modulate heat stress. Here, using an ensemble of model simulations covering Chicago, we find that Lake Michigan strongly reduces heat exposure (2.75°C reduction in maximum average air temperature in Chicago) and heat stress (maximum average wet bulb globe temperature reduced by 0.86°C) during the day, while urbanization enhances them at night (2.75 and 1.57°C increases in minimum average air …
A Fairness Assessment Of Mobility-Based Covid-19 Case Prediction Models, Abdolmajid Erfani, Vanessa Frias-Martinez
A Fairness Assessment Of Mobility-Based Covid-19 Case Prediction Models, Abdolmajid Erfani, Vanessa Frias-Martinez
Michigan Tech Publications, Part 2
In light of the outbreak of COVID-19, analyzing and measuring human mobility has become increasingly important. A wide range of studies have explored spatiotemporal trends over time, examined associations with other variables, evaluated non-pharmacologic interventions (NPIs), and predicted or simulated COVID-19 spread using mobility data. Despite the benefits of publicly available mobility data, a key question remains unanswered: are models using mobility data performing equitably across demographic groups? We hypothesize that bias in the mobility data used to train the predictive models might lead to unfairly less accurate predictions for certain demographic groups. To test our hypothesis, we applied two …
Investigating The Impact Of Seawater Intrusion On The Operation Cost Of Groundwater Supply In Island Aquifers, Weijiang Yu, Domenico Baù, Alex S. Mayer, Lauren K. Mancewicz, Mohammadali Geranmehr
Investigating The Impact Of Seawater Intrusion On The Operation Cost Of Groundwater Supply In Island Aquifers, Weijiang Yu, Domenico Baù, Alex S. Mayer, Lauren K. Mancewicz, Mohammadali Geranmehr
Michigan Tech Publications, Part 2
Managing fragile island freshwater resources requires identifying pumping strategies that trade off the financial cost of groundwater supply against controlling the seawater intrusion (SWI) associated with aquifer pumping. In this work, these tradeoffs are investigated through a sensitivity analysis conducted in the context of an optimization formulation of the groundwater management problem, which aims at minimizing the groundwater supply operation cost associated with groundwater pumping and desalination treatment, subject to constraints on SWI control, as quantified by the water table drawdown over the well (∆s), the reduction in freshwater volume (∆FV) in the aquifer, or the salt mass increase (∆SM) …
Retraining Investment For Alberta’S Oil And Gas Workers For Green Jobs In The Solar Industry, Theresa K. Meyer, Carol Hunsberger, Joshua M. Pearce
Retraining Investment For Alberta’S Oil And Gas Workers For Green Jobs In The Solar Industry, Theresa K. Meyer, Carol Hunsberger, Joshua M. Pearce
Michigan Tech Publications, Part 2
If oil sands are to be eliminated from the energy market to protect the global environment, human health and long-term economic welfare, a significant number of workers will be displaced in the transition to renewable energy technologies. This study outlines a cost-effective and convenient path for oil and gas workers in Alberta to be retrained in the burgeoning solar photovoltaic (PV) industry. Many oil and gas workers would be able to transfer fields with no additional training required. This study examines retraining options for the remainder of workers using the most closely matching skill equivalent PV job to minimize retraining …
Reconstructing 42 Years (1979–2020) Of Great Lakes Surface Temperature Through A Deep Learning Approach, Miraj Kayastha, Tao Liu, Daniel Titze, Timothy C. Havens, Chenfu Huang, Pengfei Xue
Reconstructing 42 Years (1979–2020) Of Great Lakes Surface Temperature Through A Deep Learning Approach, Miraj Kayastha, Tao Liu, Daniel Titze, Timothy C. Havens, Chenfu Huang, Pengfei Xue
Michigan Tech Publications, Part 2
Accurate estimates for the lake surface temperature (LST) of the Great Lakes are critical to understanding the regional climate. Dedicated lake models of various complexity have been used to simulate LST but they suffer from noticeable biases and can be computationally expensive. Additionally, the available historical LST datasets are limited by either short temporal coverage (<30 >years) or lower spatial resolution (0.25° × 0.25°). Therefore, in this study, we employed a deep learning model based on Long Short-Term Memory (LSTM) neural networks to produce a daily LST dataset for the Great Lakes that spans an unparalleled 42 years (1979–2020) at …
Development Of A Group Contribution Method To Predict The Aqueous-Phase Reactivities Of Hydrated Electrons With Organic Compounds, Rose Daily, Daisuke Minakata
Development Of A Group Contribution Method To Predict The Aqueous-Phase Reactivities Of Hydrated Electrons With Organic Compounds, Rose Daily, Daisuke Minakata
Michigan Tech Publications
Hydrated electrons produced in aqueous-phase advanced reduction processes (ARPs) effectively destroy oxidized forms of environmentally relevant organic contaminants, including alkyl halides. Although the rate constants of hydrated electrons with various organic compounds have been experimentally measured and compiled in the literature, no mechanistic prediction tools have been developed. Given that numerous organic compounds are used in commercial production, a prediction tool for the fate of organic compounds in the aqueous-phase ARPs will be useful. This study focused on developing a group contribution method for hydrated electrons (GCMe) to predict the second-order rate constants with aliphatic and aromatic compounds. The GCMe …
Coastal Environments: Mine Discharges And Infringements On Indigenous Peoples’ Rights, Charles Kerfoot, Gary Swain, Luis M. Verissimo, Erin Johnston, Carol Maclennan, Daniel Schneider, Noel Urban
Coastal Environments: Mine Discharges And Infringements On Indigenous Peoples’ Rights, Charles Kerfoot, Gary Swain, Luis M. Verissimo, Erin Johnston, Carol Maclennan, Daniel Schneider, Noel Urban
Michigan Tech Publications, Part 2
Over a century ago, copper mills on the Keweenaw Peninsula of Lake Superior sluiced 64 million metric tonnes (MMT) of tailings into coastal waters, creating a metal-rich “halo”. Here we show that relatively small discharges can spread widely in time and space. Mass Mill (2.9 MMT) dumping into Lake Superior also illustrates the complexity of interactions with Indigenous Peoples. A combination of aerial photos, LiDAR, and a microscope technique for distinguishing end-member particles traces the migration of tailings. The clay fraction spread rapidly across Keweenaw Bay and curled into terminal L’Anse Bay, within tribal Reservation boundaries. The coarse stamp sand …
Comparison Of Asphalt Emulsion-Based Chip Seal And Hot Rubber Asphalt-Based Chip Seal, Dongzhao Jin, Lei Yin, Kai Xin, Zhanping You
Comparison Of Asphalt Emulsion-Based Chip Seal And Hot Rubber Asphalt-Based Chip Seal, Dongzhao Jin, Lei Yin, Kai Xin, Zhanping You
Michigan Tech Publications
The use of asphalt emulsion chip seal and hot rubber chip seal as pavement preservation techniques has been gaining popularity. This study aims to compare the laboratory performance of asphalt emulsion and hot rubber asphalt used in chip seal applications. Interlayer shear strength (ISS) and interlayer tensile strength (ITS) tests were designed to evaluate the bond quality of the chip seal samples prepared for both materials. The sweep test was used to estimate the aggregate loss of the chip seal on the asphalt pavement. The universal testing machines were used to evaluate the deterioration of the ISS and ITS values …
A Case Study Of The Comparison Between Rubberized And Polymer Modified Asphalt On Heavy Traffic Pavement In Wet And Freeze Environment, Dongzhao Jin, Kwadwo Ampadu Boateng, Dongdong Ge, Tiankai Che, Lei Yin, Wayne Harrall, Zhanping You
A Case Study Of The Comparison Between Rubberized And Polymer Modified Asphalt On Heavy Traffic Pavement In Wet And Freeze Environment, Dongzhao Jin, Kwadwo Ampadu Boateng, Dongdong Ge, Tiankai Che, Lei Yin, Wayne Harrall, Zhanping You
Michigan Tech Publications
Ground tire rubber (GTR) usage in asphalt pavement with the dry process has gained more prominence in recent times. The objective of this work is to investigate the pavement performance of GTR-modified asphalt pavement and polymer-modified asphalt pavement on heavy volume of traffic conditions in Michigan's wet and freeze environment. A suite of laboratory tests was done to evaluate the pavement performance of GTR-modified and polymer-modified asphalt mixtures. To reveal the strain and stress relationship under different frequencies and temperatures, the dynamic modulus test was applied. The Hamburg wheel tracking device (HWTD) was used to assess the high-temperature deformation resistance. …
Insights On Simulating Summer Warming Of The Great Lakes: Understanding The Behavior Of A Newly Developed Coupled Lake-Atmosphere Modeling System, Miraj Kayastha, Chenfu Huang, Jiali Wang, William J. Pringle, T. C. Chakraborty, Zhao Yang, Robert D. Hetland, Yun Qian, Pengfei Xue
Insights On Simulating Summer Warming Of The Great Lakes: Understanding The Behavior Of A Newly Developed Coupled Lake-Atmosphere Modeling System, Miraj Kayastha, Chenfu Huang, Jiali Wang, William J. Pringle, T. C. Chakraborty, Zhao Yang, Robert D. Hetland, Yun Qian, Pengfei Xue
Michigan Tech Publications
The Laurentian Great Lakes are the world's largest freshwater system and regulate the climate of the Great Lakes region, which has been increasingly experiencing climatic, hydrological, and ecological changes. An accurate mechanistic representation of the Great Lakes thermal structure in Regional Climate Models (RCMs) is paramount to studying the climate of this region. Currently, RCMs have primarily represented the Great Lakes through coupled one-dimensional (1D) column lake models; this approach works well for small inland lakes but is unable to resolve the realistic hydrodynamics of the Great Lakes and leads to inaccurate representations of lake surface temperature (LST) that influence …
Automated Pavement Construction Inspection Using Uncrewed Aerial Systems (Uas)—Hot Mixed Asphalt (Hma) Temperature Segregation, Reihaneh Samsami, Amlan Mukherjee, Colin Brooks
Automated Pavement Construction Inspection Using Uncrewed Aerial Systems (Uas)—Hot Mixed Asphalt (Hma) Temperature Segregation, Reihaneh Samsami, Amlan Mukherjee, Colin Brooks
Michigan Tech Publications, Part 2
Temperature segregation in Hot Mixed Asphalt (HMA) pavement construction leads to performance problems, such as reduced fatigue life. During construction, Quality Assurance (QA) inspection procedures are required to evaluate the pavement condition and detect the segregated areas. In traditional HMA highway construction inspection processes, temperature differences are investigated manually, by sampling the HMA behind the paver. In these processes, inspectors are required to work adjacent to traffic and alongside moving or backing equipment. These processes do not provide a complete temperature profile of the mat, endanger the inspectors’ safety, and require on-site experienced inspectors. An Uncrewed Aerial System (UAS) enables …
Experimental Testing And Constitutive Modelling Of Pavement Materials, Xueyan Liu, Yuqing Zhang, Zhanping You, Linbing Wang, Changhong Zhou
Experimental Testing And Constitutive Modelling Of Pavement Materials, Xueyan Liu, Yuqing Zhang, Zhanping You, Linbing Wang, Changhong Zhou
Michigan Tech Publications
No abstract provided.
Experimental Testing And Constitutive Modelling Of Pavement Materials, Xueyan Liu, Yuqing Zhang, Zhanping You, Linbing Wang, Changhong Zhou
Experimental Testing And Constitutive Modelling Of Pavement Materials, Xueyan Liu, Yuqing Zhang, Zhanping You, Linbing Wang, Changhong Zhou
Michigan Tech Publications
Pavement materials such as asphalt mixtures, granular aggregates and soils exhibit complex material properties and engineering performance under external loading and environmental conditions [...].
Multi-Hazard Socio-Physical Resilience Assessment Of Hurricane-Induced Hazards On Coastal Communities, Omar M. Nofal, Kooshan Amini, Jamie E. Padgett, John W. Van De Lindt, Nathanael Rosenheim, Yousef M. Darestani, Amin Enderami, Elaina J. Sutley, Sara Hamideh, Leonardo Duenas-Osorio
Multi-Hazard Socio-Physical Resilience Assessment Of Hurricane-Induced Hazards On Coastal Communities, Omar M. Nofal, Kooshan Amini, Jamie E. Padgett, John W. Van De Lindt, Nathanael Rosenheim, Yousef M. Darestani, Amin Enderami, Elaina J. Sutley, Sara Hamideh, Leonardo Duenas-Osorio
Michigan Tech Publications, Part 2
Hurricane-induced hazards can result in significant damage to the built environment cascading into major impacts to the households, social institutions, and local economy. Although quantifying physical impacts of hurricane-induced hazards is essential for risk analysis, it is necessary but not sufficient for community resilience planning. While there have been several studies on hurricane risk and recovery assessment at the building- and community-level, few studies have focused on the nexus of coupled physical and social disruptions, particularly when characterizing recovery in the face of coastal multi-hazards. Therefore, this study presents an integrated approach to quantify the socio-physical disruption following hurricane-induced multi-hazards …
Analytical Study Of Silane-Based And Wax-Based Additives On The Interfacial Bonding Characteristics Between Natural Rubber Modified Binder And Different Aggregate Types, Ashiru Sani, Mohd Rosli Mohd Hasan, Khairul Anuar Shariff, Najib Mukhtar, Mohammad Nishat Akhtar, Ikenna D. Uwanuakwa, Qingli Dai, Tracy Leh Xin Wong
Analytical Study Of Silane-Based And Wax-Based Additives On The Interfacial Bonding Characteristics Between Natural Rubber Modified Binder And Different Aggregate Types, Ashiru Sani, Mohd Rosli Mohd Hasan, Khairul Anuar Shariff, Najib Mukhtar, Mohammad Nishat Akhtar, Ikenna D. Uwanuakwa, Qingli Dai, Tracy Leh Xin Wong
Michigan Tech Publications, Part 2
The modification of asphalt binder with natural rubber latex (NR) significantly improves the rutting and fatigue resistance of asphalt mixtures. However, NR-modified binder is prone to low workability and wettability due to its high viscosity. Therefore, this research focuses on examining the influences of silane and wax-based additives on the wettability of natural rubber-modified binders and the binder-aggregates adhesion performances. In this study, experimental and analytical approaches were used. The contact angles of asphalt binder were measured using a goniometer through the sessile drop method with three solvents: deionised water, formamide, and glycerol. The C++ algorithm was adopted to compute …
Identify The Micro-Parameters For Optimized Discrete Element Models Of Granular Materials In Two Dimensions Using Hexagonal Close-Packed Structures, Xiaodong Zhou, Dongzhao Jin, Dongdong Ge, Siyu Chen, Zhanping You
Identify The Micro-Parameters For Optimized Discrete Element Models Of Granular Materials In Two Dimensions Using Hexagonal Close-Packed Structures, Xiaodong Zhou, Dongzhao Jin, Dongdong Ge, Siyu Chen, Zhanping You
Michigan Tech Publications
The widely used simple cubic-centered (SCC) model structure has limitations in handling diagonal loading and accurately representing Poisson’s ratio. Therefore, the objective of this study is to develop a set of modeling procedures for granular material discrete element models (DEM) with high efficiency, low cost, reliable accuracy, and wide application. The new modeling procedures use coarse aggregate templates from an aggregate database to improve simulation accuracy and use geometry information from the random generation method to create virtual specimens. The hexagonal close-packed (HCP) structure, which has advantages in simulating shear failure and Poisson’s ratio, was employed instead of the SCC …
A Review On The Application Of 3d Printing Technology In Pavement Maintenance, Fangyuan Gong, Xuejiao Cheng, Qinghua Wang, Yi Chen, Zhanping You, Yu Liu
A Review On The Application Of 3d Printing Technology In Pavement Maintenance, Fangyuan Gong, Xuejiao Cheng, Qinghua Wang, Yi Chen, Zhanping You, Yu Liu
Michigan Tech Publications
To examine the application and significance of 3D printing technology in pavement maintenance engineering, a review of the current developments in principles, types, materials, and equipment for 3D printing was conducted. A comparison and analysis of traditional methods and 3D printing for asphalt pavement maintenance led to an investigation of 3D asphalt printing technologies and equipment. As a result, the following suggestions and conclusions are proposed: 3D printing technology can increase the level of automation and standardization of pavement maintenance engineering, leading to effective improvements in worker safety, climate adaptability, repair accuracy, etc. For on-site repair of cracks and minor …
‘Being Able To Work Has Kept Our Life Fairly Constant:’ Reconciling Social Practice Models To Assess The Impact Of (Infra)Structural Inequities On Household Wellbeing During The Covid-19 Pandemic, Sonya Ahamed, Chelsea Schelly, Kristin Floress, William Lytle, Holly Caggiano, Cara L. Cuite, Charles Wallace, Ryan Cook, Rebekah Jarvis, Rachael Shwom, David Watkins
‘Being Able To Work Has Kept Our Life Fairly Constant:’ Reconciling Social Practice Models To Assess The Impact Of (Infra)Structural Inequities On Household Wellbeing During The Covid-19 Pandemic, Sonya Ahamed, Chelsea Schelly, Kristin Floress, William Lytle, Holly Caggiano, Cara L. Cuite, Charles Wallace, Ryan Cook, Rebekah Jarvis, Rachael Shwom, David Watkins
Michigan Tech Publications, Part 2
Social practice theory offers a multidisciplinary perspective on the relationship between infrastructure and wellbeing. One prominent model in practice theory frames systems of provision as the rules, resources, and structures that enable the organization of social practices, encompassing both material and immaterial aspects of infrastructures. A second well-known model frames social practices in terms of their constituent elements: meanings, materials, and competences. Reconciling these two models, we argue that household capacity to respond to shifting systems of provision to maintain wellbeing is profoundly tied to the dynamics of privilege and inequity. To examine these dynamics, we propose a new analytical …
Racial Disparities In The Construction Domain: A Systematic Literature Review Of The U.S. Educational And Workforce Domain, Josiane Isingizwe, Ricardo Eiris, Masoud Gheisari
Racial Disparities In The Construction Domain: A Systematic Literature Review Of The U.S. Educational And Workforce Domain, Josiane Isingizwe, Ricardo Eiris, Masoud Gheisari
Michigan Tech Publications
Trends in the construction domain, educational enrollment, student graduation, student industry employment, and workforce retention demonstrate that minorities—Hispanics, African Americans, Asian Americans, and Native Americans—are often excluded, segregated, or ignored in this domain. A systematic literature review (N = 68) was conducted to investigate the causes and effects of racial disparities produced by systemic racism in the educational and workforce domains of construction. Particularly, this paper focuses on exploring how racial disparities in construction impact minorities, the current state of the racial divide, the practices that perpetuate racial inequities, and the strategies currently used to prevent, in a sustainable manner, …
Moisture Sources Of Precipitation In The Great Lakes Region: Climatology And Recent Changes, Zhao Yang, Yun Qian, Pengfei Xue, Jiali Wang, T. C. Chakraborty, William J. Pringle, Jianfeng Li, Xiaodong Chen
Moisture Sources Of Precipitation In The Great Lakes Region: Climatology And Recent Changes, Zhao Yang, Yun Qian, Pengfei Xue, Jiali Wang, T. C. Chakraborty, William J. Pringle, Jianfeng Li, Xiaodong Chen
Michigan Tech Publications
Given the critical role of precipitation on hydroclimate, we quantified the contributions of moisture source regions to precipitation in the Great Lakes Region (GLR) using multiple reanalysis data sets. Results show that the Great Plains (GPs) and the GLR itself are the primary sources of moisture. The moisture sources for the double peaks in the GLR precipitation that occur in June and September are identified, which is caused by a shift in the peak timing of moisture contribution from the GLR and GPs. In particular, moisture from the GPs contributes more to the heavy precipitation, while moisture from the GLR …
Reconstruction Of Asphalt Pavements With Crumb Rubber Modified Asphalt Mixture In Cold Region: Material Characterization, Construction, And Performance, Dongzhao Jin, Dongdong Ge, Jiaqing Wang, Lance Malburg, Zhanping You
Reconstruction Of Asphalt Pavements With Crumb Rubber Modified Asphalt Mixture In Cold Region: Material Characterization, Construction, And Performance, Dongzhao Jin, Dongdong Ge, Jiaqing Wang, Lance Malburg, Zhanping You
Michigan Tech Publications
Dry-processed rubberized asphalt mixture has recently attracted a lot of attention as an alternative to conventional asphalt mixtures. Dry-processed rubberized asphalt pavement has improved the overall performance characteristics compared to the conventional asphalt road. The objective of this research is to demonstrate the reconstruction of rubberized asphalt pavement and evaluate the pavement performance of dry-processed rubberized asphalt mixture based on laboratory and field tests. The noise mitigation effect of dry-processed rubberized asphalt pavement was evaluated at the field construction sites. A prediction of pavement distresses and long-term performance was also conducted using mechanistic-empirical pavement design. In terms of experimental evaluation, …
Predictions Of Household Water Affordability Under Conditions Of Climate Change, Demographic Growth, And Fresh Groundwater Depletion In A Southwest Us City Indicate Increasing Burdens On The Poor, Josiah M. Heyman, Alex S. Mayer, Jessica Alger
Predictions Of Household Water Affordability Under Conditions Of Climate Change, Demographic Growth, And Fresh Groundwater Depletion In A Southwest Us City Indicate Increasing Burdens On The Poor, Josiah M. Heyman, Alex S. Mayer, Jessica Alger
Michigan Tech Publications
Reduced river flows and groundwater depletion as a result of climate change and population growth have increased the effort and difficulty accessing and processing water. In turn, residential water costs from municipal utilities are predicted to rise to unaffordable rates for poor residential water customers. Building on a regional conjunctive use model with future climate scenarios and 50-year future water supply plans, our study communicates the effects of climate change on poor people in El Paso, Texas, as water becomes more difficult and expensive to obtain in future years. Four scenarios for future water supply and future water costs were …