Civil and Environmental Engineering Commons^™

Forecasting Of The Residual Life Of Parts And Interfaces Of Vehicles During Their Repair, G.K. Ubaydullayev, S.R. Shadiyev, D.G. Rasulova

The Scientific Journal of Vehicles and Roads

The article discusses the issues of determining the residual life of parts and interfaces of vehicles during their repair. Theoretical prerequisites and the sequence of their definition are given.

Water Quality Sampling And Analysis, Joanna Burkhardt

Library Impact Statements

No abstract provided.

Understanding And Overcoming Challenges To Photochemical Water Treatment Technologies, Mostafa Maghsoodi

LSU Doctoral Dissertations

Photochemical water treatment technologies have been extensively studied in recent years to update the current practices and find an innovative, cheap, and sustainable way to treat contaminated water. Despite the well-documented advantages, these technologies faced some challenges and limitations in the way of technology transfer. Among all the challenges, the presence of dissolved organic matter (DOM) poses a serious challenge to the application of these technologies, especially photocatalysis. Moreover, the prospect of utilizing the new technology of light-emitting diodes (LEDs) offers an upgrade in the efficiency of the current practice of ultraviolet (UV) dosing. To understand the effect of DOM …

Perceptions Of Safety Climate In Construction Projects Between Workers And Managers/Supervisors In The Developing Country Of Iran, Daniel W. M. Chan, Matteo Cristofaro, Hala Nassereddine, Nicole S. N. Yiu, Hadi Sarvari

Civil Engineering Faculty Publications

What are the different perceptions on safety climate (SC) by workers and managers/supervisors engaged in the construction industry of developing countries? Reconciling these two differing views is pivotal for mitigating and avoiding both the injured and fatal accidents in the construction industry, especially in those developing countries where safety conditions are poor and unpredictable, and safety measures are inadequate in most cases. To answer this research question, the collective perceptions of 118 construction workers and 123 managers/supervisors on the SC in construction projects in Iran were gleaned and investigated. In particular, these perceptions were initially collected by two different empirical …

Image-Based Bridge Defect Detection And Monitoring Technologies, Jian Zhang

INSPIRE Archived Webinars

Computer-vision is an emerging technology which has been widely used in the field of structural health monitoring. This seminar will cover the latest achievements of our research group in defect detection, health monitoring, and construction control using image-based technologies. For defect detection, advanced unmanned aerial vehicles (UAVs) have been developed to automatically detect surface cracks and other types of structural damages based on digital image processing techniques. An integrated navigation system combining binocular camera and inertial sensor enables automated route planning for the developed UAVs in case of GPS failure. Specifically, a wall-climbing UAV is designed to acquire detailed surface …

Metasurface Cloaks To Decouple Closely Spaced Printed Dipole Antenna Arrays Fed By A Microstrip-To-Balanced Transmission-Line Transition, Doojin Lee, Alexander B. Yakovlev

Faculty and Student Publications

In this work, we present a numerical study of 1D and 2D closely spaced antenna arrays of microstrip dipole antennas covered by a metasurface in order to properly cloak and decouple the antenna arrays operating at neighboring frequencies. We show that the two strongly coupled arrays fed by a microstrip-to-balanced transmission-line transition are effectively decoupled in 1D and 2D array scenarios by covering the dipole antenna elements with an elliptically shaped metasurface. The metasurface comprises sub-wavelength periodic metallic strips printed on an elliptically shaped dielectric cover around the dipole antennas and integrated with the substrate. We present a practical design …

Bridge Inspection And Defect Recognition With Using Impact Echo Data, Probability, And Naive Bayes Classifiers, Faezeh Jafari, Sattar Dorafshan

Civil Engineering Faculty Publications

Interpretation of IE data have been carried out by analyzing IE signals in frequency domain to determine the maximum frequency. However, the current peak frequency method can be inaccurate. The purpose of this research is to introduce features in IE signals that can be used for effective classification and interpretation for bridge deck evaluation through statistical analysis and Naive Bayes classifiers. The dataset contained IE data collected from eight slabs created at Advanced Sensing Technology FAST NDE laboratory (FHWA). A set of statistical features in time domain, normalized peak values, and length of preprocessed signals were used to classify the …

Three-Dimensional Microscopic Image Reconstruction Based On Structured Light Illumination, Taichu Shi, Yang Qi, Cheng Zhu, Ying Tang, Ben Wu

Henry M. Rowan College of Engineering Departmental Research

In this paper, we propose and experimentally demonstrate a three-dimensional (3D) microscopic system that reconstructs a 3D image based on structured light illumination. The spatial pattern of the structured light changes according to the profile of the object, and by measuring the change, a 3D image of the object is reconstructed. The structured light is generated with a digital micro-mirror device (DMD), which controls the structured light pattern to change in a kHz rate and enables the system to record the 3D information in real time. The working distance of the imaging system is 9 cm at a resolution of …

Ems Response Time For Patients Critically-Injured From Automobile Accidents Using Regression Analysis, Sneha R. Vanga, Phillip M. Ligrani, Mehrnaz Doustmohammadi, Michael Anderson

PRC-Affiliated Research

The ability to quickly and effectively receive medical treatment in the event of an automobile collision is one of the most important aspects in emergency medical services (EMS). Emergency medical service providers are the first to respond and manage cases related to trauma, emergency surgery, and critically injured patients. Response time for emergency medical services vehicles is especially important for areas, where travel distances are often much larger, compared to more urban areas. The importance of the present data and analysis procedures are their applicability to multiple environments, including urban settings. Methods: The present study is focused on optimization of …

Ems Response Time For Patients Critically-Injured From Automobile Accidents Using Regression Analysis, Sneha R. Vanga, Phillip M. Ligrani, Mehrnaz Doustmohammadi, Michael Anderson

PRC-Affiliated Research

The ability to quickly and effectively receive medical treatment in the event of an automobile collision is one of the most important aspects in emergency medical services (EMS). Emergency medical service providers are the first to respond and manage cases related to trauma, emergency surgery, and critically injured patients. Response time for emergency medical services vehicles is especially important for areas, where travel distances are often much larger, compared to more urban areas. The importance of the present data and analysis procedures are their applicability to multiple environments, including urban settings. Methods: The present study is focused on optimization of …

Common Ground Newsletter Fall 2021, Missouri University Of Science And Technology

Common Ground

-Lighting the way with solar panel inspections
-CArEE Miner athletes score recognition
-Celebrating 150 years of civil engineering at S&T

Editorial: Development And Application Of Bituminous Materials For Civil Infrastructures, Zhanping You, Jie Ji, Dawei Wang, Feng Li, Hui Yao, Yue Hou

Michigan Tech Publications, Part 1

No abstract provided.

Engineered Cementitious Composite For Pavement Applications: Materials Development And Design Framework, Hassan Noorvand

LSU Doctoral Dissertations

Engineered Cementitious Composites (ECCs) are a novel class of high-performance fiber-reinforced cementitious composites characterized by their high tensile strain capacity. While ECCs have been presented as a promising material alternative for the construction of durable pavements and overlays, the cost of these materials is a major drawback, which limits their widespread implementation. More importantly, performance prediction models for ECC pavements existing in the literature are incomplete as the effect of ECC plasticity has not been considered in the integration of finite element (FE) analysis and beam flexural fatigue experimental test results. Moreover, the existing ECC pavements performance prediction models are …

Pollution Prevention/Environmental Sustainability For Industry, Bruce Dvorak

Department of Civil and Environmental Engineering: Faculty Publications

It has been 30 years since, in the United States, the Pollution Prevention Act of 1990 focused attention on reducing pollution through cost-effective changes in production, operation, and raw materials use. The pollution prevention approach was novel in focusing on increasing the efficiency of a process and reducing the amount of pollution generated at its source. Worldwide, industrial organizations embraced cleaner production approaches that result in reducing pollution at the source. Governmental bodies are exploring the best prevention and control polices for pollution and energy management. Since that time, the industry has successfully applied the three pillars of sustainability—economic, environmental, …

Evaluating Essential Processes And Forecast Requirements For Meteotsunami-Induced Coastal Flooding, Chenfu Huang, Eric Anderson, Yi Liu, Gangfeng Ma, Greg Mann, Pengfei Xue

Michigan Tech Publications, Part 1

Meteotsunamis pose a unique threat to coastal communities and often lead to damage of coastal infrastructure, deluge of nearby property, and loss of life and injury. The Great Lakes are a known hot-spot of meteotsunami activity and serve as an important region for investigation of essential hydrodynamic processes and model forecast requirements in meteotsunami-induced coastal flooding. For this work, we developed an advanced hydrodynamic model and evaluate key model attributes and dynamic processes, including: (1) coastal model grid resolution and wetting and drying process in low-lying zones, (2) coastal infrastructure, including breakwaters and associated submerging and overtopping processes, (3) annual/seasonal …

Exploring The Structural Uniformity And Integrity Of Protonic Ceramic Thin Film Electrolyte Using Wet Powder Spraying, Wuxiang Feng, Wei Wu, Congrui Grace Jin, Meng Zhou, Wenjuan Bian, Wei Tang, Joshua Y. Gomez, Richard Boardman, Dong Ding

Department of Civil and Environmental Engineering: Faculty Publications

Thin protonic ceramic electrolyte contributes to lower ohmic resistance and enhances electrochemical performance of protonic ceramic electrochemical cells. However, manufacturing of large-scale thin electrolyte remains a challenge. Wet powder spraying is an attractive technique to deposit <10 >μm thin electrolyte when advanced atomizing techniques and optimized spraying process are integrated. Here ultrasonic atomization is integrated in the wet powder spray technique to reduce the thickness of electrolyte. Moreover, a parametric study is conducted to optimize the wet powder spray process to deposit uniform and crack-free electrolyte film. It is illustrated that tuning of solid loading rates and spray passes can affect …

Characterization Of Foamed Warm-Mix Asphalt For Workability And Moisture Damage, Biswajit Kumar Bairgi

Civil Engineering ETDs

Warm mix asphalt (WMA) technology reduces the high mixing and compaction temperatures of conventional hot mix asphalt (HMA) by approximately 10 ^°C to 40 ^°C. In WMA technology, instead of increasing the binder-aggregate temperature, the volume of asphalt is increased by injecting water into hot asphalt at high air pressure. The amount of water injected in the binder is typically determined by a trial and error process and is termed as foaming water content (FWC). Once the FWC is in contact with the hot asphalt binder, it turns into vapor with a rapid volume expansion due …

Assessment Of Streamflow Predictions Generated Using Multimodel And Multiprecipitation Product Forcing, Bong Chul Seo, Witold F. Krajewski, Felipe Quintero, Steve Buan, Brian Connelly

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This study assesses streamflow predictions generated by two distributed hydrologic models, the Hillslope Link Model (HLM) and the National Water Model (NWM), driven by three radar-based precipitation forcing datasets. These forcing data include the Multi-Radar Multi-Sensor (MRMS), and the Iowa Flood Center's single-polarization-based (IFC-SP) and dual-polarization-based (IFC-DP) products. To examine forcing-and model-dependent aspects of the representation of hydrologic processes, we mixed and matched all forcing data and models, and simulated streamflow for 2016–18 based on six forcing–model combinations. The forcing product evaluation using independent ground reference data showed that the IFC-DP radar-only product's accuracy is comparable to MRMS, which is …

How The Pavement's Lifetime Depends On The Stress Level: An Explanation Of The Empirical Formula, Edgar Daniel Rodriguez Velasquez, Vladik Kreinovich, Olga Kosheleva, Hoang Phuong Nguyen

Departmental Technical Reports (CS)

We show that natural invariance ideas explain the empirical dependence on the pavement's lifetime on the stress level.

Fiber Optic-Based Thermal Integrity Profiling Of Drilled Shaft: Inverse Modeling For Spiral Fiber Deployment Strategy, Wen Deng, Ruoyu Zhong, Haiying Ma

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The current state of practice to interpret the thermal integrity profiling (TIP) data of drilled shaft is the so-called effective radius method. It uses the concrete pouring log and average temperature to construct a relationship between temperature distribution and effective radius that can be used to reconstruct a drilled shaft model. While this effective radius method is computationally inexpensive and has good operationality, it is not good at predicting the dimensions and shape of shaft defects. Upgrading the sensor used in conventional TIP from thermocouples/thermal wires to fiber optic sensors, the spatial resolution of the measured temperature will be enhanced. …

Kentucky Traffic Collision Facts 2020, Eric Green, Paul Ross, Christopher Blackden, Michael Fields, Kenneth Agent

Kentucky Transportation Center Research Report

KENTUCKY’S TRAFFIC COLLISION FACTS report is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised Statutes 189.635:

“Every law enforcement agency whose officers investigate a vehicle accident of which a report must be made...shall file a report of the accident...within ten days after investigation of the accident upon forms supplied by the bureau.”

The stated purpose of this requirement is to utilize data on traffic collisions for such purposes as will improve the traffic safety program in the Commonwealth.

2021 Safety Belt Usage Survey In Kentucky, Erin Lammers-Staats, Kenneth Agent, Eric Green

Kentucky Transportation Center Research Report

The objective of the survey summarized in this report was to establish a statewide safety belt usage rate in Kentucky for 2021. This rate can be compared to those determined from previous surveys. The 2021 statewide survey documents the continued effect associated with law enforcement, related education, and general public attitude.

Environmental Assessment Of The Impact Of Land-Based Discharges On Marine Water And Sediment Quality In Dubai, Uae, Ayman Fathy Halawa

Theses

The current seawater and Creek – Canal waterway in the Emirate of Dubai, UAE, is under tremendous pressure because of continuous urban water discharges from land-based sources. Therefore, the impact of urban water discharges on marine water and sediment quality in the Emirate requires a thorough assessment. The main objective of this study is to assess the impacts of effluent discharges on the quality of water and sediment in the open sea and Dubai Creek. The land-based sources include the power and desalination plants, industrial sector, sewage treatment plant, and stormwater runoff. To achieve the stated objective, relevant data on …

Guidelines For Structural Optimization And Sustainable Retrofitting Of Re-Purposed Buildings Using Bim, Mariam Ehab, Mina Maxi, Gehan Nagy

Civil Engineering

Nowadays energy problems resulting from the building industry become very polluting along with the high expenses of the building operation. Designers tend to propose another solution which is the refurbishment of old buildings to be energy-optimized and more efficient. As a result, some solutions are addressed to prioritize keeping the architectural theme of the city as well as reducing land use. An extensive investigation is conducted to review past research approaches regarding energy optimization requirements as well as scoping on structural optimization through building refurbishment. Structural optimization resulting from structural repurposing is not studied in depth recently, as a result, …

Development Of Novel Ultra-High Performance Engineered Cementitious Composites (Uhp-Ecc) For Durable And Resilient Transportation Infrastructure, Gabriel A. Arce, Marwa Hassan, Daniel E. Game

Data

The objective of this study was to develop novel UHP-ECC materials utilizing readily available ingredients in Region 6 for the construction and repair of transportation infrastructure. Phase one of this study focused on the development of ultra-high strength cementitious matrices by evaluating the effects of ingredient selection and mixture proportioning on the materials’ compressive strength. Variables evaluated included the mass ratios of silica fume to fly ash (SF/FA), supplementary cementitious materials to cement (SCMs/C), and ordinary sand to microsilica sand (OS/MS). Phase two of the study focused on the development of UHP-ECC materials. To this end, based on the knowledge …

Multifunctional Corrosion Control System As A Sustainable Approach For Reinforced Concrete Elements, Homero Castaneda, Miladin Radovic, Brendy Rincon, Oladis Troconis, Arturo Montoya, Changkyu Kim, Loreto Dacio

Data

Corrosion inhibitors can be utilized to decrease the corrosion kinetics and therefore increase the durability of reinforced concrete structures. Recently, a green synthesized organic compound, 1-benzyl-4-phenyl-1H-1,2,3-triazole (BPT), was shown to be a successful green organic corrosion inhibitor for mild steel. Studies suggested that the BPT adsorbs chemically onto the steel and acts as a mixed inhibitor, suppressing both the anodic and cathodic corrosion kinetics of steel. In addition, microcapsules have shown to be an efficient way for a controlled inhibitor release in reinforced concrete structures. On the other hand, geopolymers (GPs) comprised of a long range of covalently bonded alumino-silicates, …

Multifunctional Corrosion Control System As A Sustainable Approach For Reinforced Concrete Elements, Homero Castaneda, Miladin Radovic, Brendy Rincon, Oladis Troconis, Arturo Montoya, Changkyu Kim, Loreto Dacio

Publications

Corrosion inhibitors can be utilized to decrease the corrosion kinetics and therefore increase the durability of reinforced concrete structures. Recently, a green synthesized organic compound, 1-benzyl-4-phenyl-1H-1,2,3-triazole (BPT), was shown to be a successful green organic corrosion inhibitor for mild steel. Studies suggested that the BPT adsorbs chemically onto the steel and acts as a mixed inhibitor, suppressing both the anodic and cathodic corrosion kinetics of steel. In addition, microcapsules have shown to be an efficient way for a controlled inhibitor release in reinforced concrete structures. On the other hand, geopolymers (GPs) comprised of a long range of covalently bonded alumino-silicates, …

Deep Reinforcement Learning-Based Project Prioritization For Rapid Post-Disaster Recovery Of Transportation Infrastructure Systems, Yongcheol Lee, Kunhee Choi Ph.D, Pedram Ghannad

Data

Among various natural hazards that threaten transportation infrastructure, flooding represents a major hazard in Region 6's states to roadways as it challenges their design, operation, efficiency, and safety. The catastrophic flooding disaster event generally leads to massive obstruction of traffic, direct damage to highway/bridge structures/pavement, and indirect damages to economic activities and regional communities that may cause loss of many lives. After disasters strike, reconstruction and maintenance of an enormous number of damaged transportation infrastructure systems require each DOT to take extremely expensive and long-term processes. In addition, planning and organizing post-disaster reconstruction and maintenance projects of transportation infrastructures are …

Efficient, Low-Cost Bridge Cracking Detection And Quantification Using Deep-Learning And Uav Images, Chao Sun, Xiangyu Meng, Joshua O. Ogbebor, Shaopan Guo

Data

Many bridges in the State of Louisiana and the United States are working under serious degradation conditions where cracks on bridges threaten structural integrity and public security. To ensure structural integrity and public security, it is required that bridges in the US be inspected and rated every two years. Currently, this biannual assessment is largely implemented using manual visual inspection methods, which is slow and costly. In addition, it is challenging for workers to detect cracks in regions that are hard to reach, e.g., the top part of the bridge tower, cables, mid-span of the bridge girders, and decks. This …

Efficient, Low-Cost Bridge Cracking Detection And Quantification Using Deep-Learning And Uav Images, Chao Sun, Xiangyu Meng, Joshua O. Ogbebor, Shaopan Guo

Publications

Many bridges in the State of Louisiana and the United States are working under serious degradation conditions where cracks on bridges threaten structural integrity and public security. To ensure structural integrity and public security, it is required that bridges in the US be inspected and rated every two years. Currently, this biannual assessment is largely implemented using manual visual inspection methods, which is slow and costly. In addition, it is challenging for workers to detect cracks in regions that are hard to reach, e.g., the top part of the bridge tower, cables, mid-span of the bridge girders, and decks. This …