Civil Engineering Commons^™

A Novel Approach To Evaluate Seatbelt Non-Compliance Of Drivers In New Jersey, Md Arifuzzaman Nayeem

Theses and Dissertations

This study intends to investigate the non-compliant behavior of drivers with seatbelt use in New Jersey. By examining various factors such as temporal and roadway characteristics, this study seeks to identify the underlying causes of this seatbelt non-compliance behavior. To overcome the limitations of traditional methods like cross-sectional data collection, a novel approach known as moving vehicle method was employed. To gain further insights, hypothesis tests were performed across the entire dataset to pinpoint significant temporal, roadway, and geometric factors contributing to non-compliant behaviors. In the subsequent step, the association of other risky behaviors like speeding and distracted driving with …

Development Of Electrically Conductive Asphalt Pavements For Deicing Applications In Cold Regions, Ashith Marath Padinhare Purakkal

Theses and Dissertations

Winter conditions often lead to significant traffic delays and safety risks due to ice or snow accumulation on pavement surfaces. This study evaluates the potential of electrically conductive asphalt (ECA) pavements to prevent such accumulations by melting ice and snow under real-world conditions. The study involved preparing ECA mixtures using graphite and carbon fibers, three carbon fiber lengths (3 mm, 6 mm, and 24 mm), and aggregates with two nominal maximum aggregate sizes (NMAS) (4.75 mm and 9.5 mm). Electrical resistivity, rutting susceptibility and cracking resistance of compacted ECA mixtures were evaluated. Results indicated that ECA mixtures with 15% graphite …

Prediction Of Moisture Resistance Of Aggregate Binder System Through Physicochemical And Mechanical Assessment, Khaja Sameer Sadat

Student Theses and Dissertations

Moisture sensitivity has been a significant factor in pavement deterioration for several decades. The primary objective of the proposed research is to quantify the interface-level adhesion forces between bitumen samples and various types of aggregates. Aggregates and binders from varying sources with an anti-stripping agent were utilized for routine tests, micro-level tests, and elemental analysis. Pneumatic Adhesion Tensile Testing Instrument (PATTI) was discovered to be a more straightforward, simple, and repeatable adhesion testing method. The PATTI test revealed that sandstone exhibited higher adhesion values due to its greater porosity and absorption potential than limestone. The Texas Boiling test removed human …

Air Content Variation In Concrete At Different Stages Of Its Lifecycle, Mohammad Sarfaraz Uddin

Student Theses and Dissertations

In cold climates, concrete structures are susceptible to deterioration from the freezing and thawing of water within the concrete. The arrangement of air voids is crucial for the concrete to endure the freeze-thaw cycles. This research investigates changes in the air void system within concrete using a super air meter and the properties of both fresh and hardened concrete at various stages, including mixing and after pumping. Laboratory mixes used different dosages of air-entraining admixes and included Rice Husk Ash (RHA) as a supplementary material. Adding RHA to the mix resulted in a decrease in air content of about 2.2%, …

Effective Integration Of Waste Plastics In Hot Mix Asphalt Mixtures: Towards Sustainable Infrastructure, Venkatsushanth Revelli

Theses and Dissertations

The study investigated the potential of waste plastics such as low density polyethylene(LDPE), high density polyethylene(HDPE), polyethylene terephthalate(PET) and polystyrene (PS) for designing superior performing asphalt mixtures. Both wet mixing and dry mixing methods were adopted for designing plastic modified asphalt mixtures. Initially LDPE and HDPE were selected for developing plastic modified binders, based on melting characterization, determined from differential scanning calorimeter(DSC). In wet mixing process, the influence of dosage, size of plastic, blending duration and interaction between plastic and asphalt were assessed. Plastics were found to exhibit phase separation with asphalt, while finer particles take only longer to segregate …

Comparative Analysis Of Muskingum Routing: Traditional Vs. Ai-Assisted Methods, Vida Atashi

AI Assignment Library

In this assignment, students will apply traditional and AI-assisted Muskingum routing methods to real-world discharge data from the USGS over a 10-day period. The goal is to compare these approaches, enhancing skills in hydrological modeling and data analysis crucial for water resources engineering.

The Role Of Micromobility In The Changing Urban Mobility Landscape, Mostafa Jafarzadehfadaki

All ETDs from UAB

The growing prevalence of micromobility has significantly impacted urban mo-‎bility, offering a sustainable and convenient alternative for short trips in urban settings. ‎As cities grapple with increasing congestion, pollution, and the demand for efficient ‎mobility solutions, micromobility options like e-scooters and e-bikes have emerged as ‎popular modes of transportation, particularly in densely populated areas. While earlier ‎research has contributed to understanding micromobility and its impact on urban set-‎tings, significant knowledge gaps still exist. Therefore, a comprehensive study is neces-‎sary to explore the multifaceted dimensions of e-scooter adoption, usage patterns of mi-‎cromobility, and their implications for urban transportation systems and traffic …

Environmental Engineering 3.0: Faced With Planetary Problems, Solutions Must Scale-Up Caring, Daniel B. Oerther, Sarah Oerther, Linda A. Mccauley

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes containing speculation, on a civil engineering topic of general interest and relevance to the readership of the journal. The views expressed in this Forum article do not necessarily reflect the views of ASCE or the Editorial Board of the journal.

Asphalt-Binder Mixtures Evaluated By T1 Nmr Relaxometry, Rebecca M. Herndon, Jay Balasubramanian, Magdy Abdelrahman, Klaus Woelk

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Asphalt pavements make up a majority of the essential transportation systems in the US. Asphalt mixtures age and degrade over time, reducing the pavement performance. Pavement performance critically depends on the aging of asphalt binder. The aging of asphalt binder during construction is traditionally modeled by rolling thin film oven (RTFO) testing, while aging during service life is modeled by pressure aging vessel (PAV) testing. Comparing these models to the aging of binders in actual pavements is limited because, to be used for current testing, binders must be separated from the pavement's aggregate by solvent extraction. Solvent extraction will, at …

Nuclear Magnetic Resonance (Nmr) Assessment Of Bio And Crude Oil-Based Rejuvenation, Rebecca M. Herndon, Jay Balasubramanian, Magdy Abdelrahman, Klaus Woelk

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Asphalt binders in pavements lose their stability through aging and eventually fail in the field. Using nuclear magnetic resonance (NMR) to monitor the primary longitudinal relaxation time of asphalt samples and the ratio of material that carries this primary relaxation time has been shown to indicate the impact of ultraviolet (UV) radiation on the aging of asphalt pavements. Longitudinal NMR relaxation was used to investigate two types of proposed asphalt rejuvenators, a bio-oil-based rejuvenator and a crude-oil-based rejuvenator. Two different binders with the performance grades (PG) 64-22 and 76-22 were considered for their interactions with the rejuvenators. After 72 h …

Asphalt-Binder Mixtures Evaluated By T1 Nmr Relaxometry, Rebecca M. Herndon, Jay Balasubramanian, Magdy Abdelrahman, Klaus Woelk

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Asphalt pavements make up a majority of the essential transportation systems in the US. Asphalt mixtures age and degrade over time, reducing the pavement performance. Pavement performance critically depends on the aging of asphalt binder. the aging of asphalt binder during construction is traditionally modeled by rolling thin film oven (RTFO) testing, while aging during service life is modeled by pressure aging vessel (PAV) testing. Comparing these models to the aging of binders in actual pavements is limited because, to be used for current testing, binders must be separated from the pavement's aggregate by solvent extraction. Solvent extraction will, at …

Influence Of Plastic Coating Temperature On Recycled Concrete Brick Coarse Aggregate, Jamil Ahmed Joy, Chowdhury Zubayer Bin Zahid, S. M. Imdadul Islam

Civil Engineering Faculty Publications

The generation of waste from the demolition of old structures poses a significant environmental challenge. Recycling these materials as aggregates in concrete offers a potential alleviation of environmental impact. While recycled aggregates offer promise as a remedy, they are not without drawbacks. However, innovative approaches have been developed to overcome these limitations. Among these, plastic coating stands out as a particularly sustainable solution. This study investigates the influence of plastic coating temperature on recycled concrete brick aggregates (RCBA), which serve as coarse aggregates. The RCBA were coated with locally sourced polyethylene terephthalate (PET) at varying temperatures, such as 250 °C, …

Building Services Engineering September/October 2024

Building Services Engineering

No abstract provided.

Enhanced Perfluorooctanoic Acid (Pfoa) Degradation By Electrochemical Activation Of Peroxydisulfate (Pds) During Electrooxidation For Water Treatment, Melvin S. Samuel, Kadarkarai Govindan, Donald R. Ryan, Sean T. Mcbeath, Brooke K. Mayer, Patrick J. Mcnamara

Civil and Environmental Engineering Faculty Research and Publications

Improved treatment of per- and polyfluoroalkyl substances (PFAS) in water is critically important in light of the proposed United States Environmental Protection Agency (USEPA) drinking water regulations at ng L−1 levels. The addition of peroxymonosulfate (PMS) during electrooxidation (EO) can remove and destroy PFAS, but ng L−1 levels have not been tested, and PMS itself can be toxic. The objective of this research was to test peroxydisulfate (PDS, an alternative to PMS) activation by boron-doped diamond (BDD) electrodes for perfluorooctanoic acid (PFOA) degradation. The influence of PDS concentration, temperature, and environmental water matrix effects, and PFOA concentration on PDS-EO …

Assessment Of Dune Change Using Historical Aerial And Satellite Photos, Topographic Surveys, And Wave Data At Toro Creek Beach, Owen D. Emerson

Master's Theses

Coastal sand dunes play an important role in the littoral processes of California’s coastline. Functioning as both source and sink for sand, these dunes often protect coastal infrastructure and provide a buffer between anthropogenic development and coastal forces. At Toro Creek Beach, north of Morro Bay California, recent extreme winter storms have raised concerns about the erosion of the sand dunes that front California State Highway 1. This thesis attempts to characterize the historical growth and recession patterns of the Toro Creek dunes since 1977, the dune movement over the 2023-2024 winter seasons, the wave forcings behind recent high erosion …

Investigation Of Temperature, Solution Strength, And Applied Stress Effects On Cation Exchange Processes In Different Geosynthetic Clay Liner Products, Kendra Fuller

Master's Theses

An extensive laboratory test program was conducted to analyze and compare the cation exchange processes in three different varieties of sodium bentonite (Na-B) geosynthetic clay liners (GCLs) over increased conditioning durations up to 32 days and investigate the effects of temperature, solution strength, and applied stress. The goal of this test program was to establish whether the variables of temperature, solution strength, and applied stress improved or degraded the engineering properties of GCLs in laboratory testing and municipal solid waste (MSW) landfill applications. The GCLs were conditioned in liquids of increasing ionic strength, using deionized water and 2, 50, and …

Empirical Investigation Of Withdrawal Capacity Of Staple For Experimental Design Of Irish Timber, Afnan Nafees, Patrick Mcgetrick, Aimee Byrne

Conference papers

Sitka spruce is the main tree species grown in Ireland, covering over 50% of the forest area. Despite this, Ireland imported €1.8 billion worth of wood products in 2020 mostly from UK, China, US and Sweden. One of the factors that currently limits the specifying of Irish grown timber in construction applications is the lack of data relating to its structural performance. Expanding the use of this locally available material in construction will add economic and environmental benefits, creating new opportunities for employment. In order to effectively use Irish timber for structural purposes, a comprehensive analysis of its inherent properties …

A Step By Step Shoreline Attribute Analysis For Selected Waterbodies In The Gulf Of Mexico To Promote The Use Of Living Shorelines, Christoper Boyd, Xutong Niu, Taylor R. Horn

Journal of Extension

Living Shorelines are being promoted by coastal extension professionals as a more resilient nature-based solution to control shoreline erosion. The Virginia Institute of Marine Sciences Living Shorelines Suitability Model was run in selected waterbodies within the Gulf of Mexico.

The locations of the selected water bodies, coastal data sets used, and shoreline protection recommendations generated by the Model are presented. A step-by-step statistical analysis conducted through ArcGIS Pro from these selected coastal shorelines will illustrate how extension professionals with novice GIS experience can use the model output to promote living shorelines to coastal property owners, city managers, and developers.

Thermal And Structural Performances Of Screen Grid Insulated Concrete Forms (Sgicfs) Using Experimental Testing, Yosra El Maghraby

Civil Engineering

No abstract provided.

‘‘Domicilelessness’’ And Livelihoods In Urban Areas: Case Of Maasai In Dar Es Salaam, Tanzania, Ombeni Swai

Tanzania Journal of Engineering and Technology (TJET)

The study aimed at demonstrating Maasai migration into Dar es Salaam urban areas and their challenges in accessing accommodation. Methodologically, the study deployed secondary data analysis following a descriptive research design. Furthermore, this study was conducted through both qualitative and quantitative research approaches. The study was conducted from 2018 to 2022 of which a random sample of 100 (N=100) was targeted. The data was analyzed using the Statistical Package for Social Sciences (SPSS Version 16). Findings: The Maasai means of accommodation are divided into four main categories: completed houses (6%), under-construction sites (39%), halfway constructed and abandoned structures (31%), and …