Browsing Civil & Environmental Engineering by Title
Now showing items 44-63 of 103
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Evaluation of the Causative Factors for Slope Failures in North Dakota
(North Dakota State University, 2021)A large number of landslides with damage to roads and utilities, destruction of property, and flood risks were encountered in North Dakota (ND). Using a correlation matrix, causative factors such as soil salinity, land ... -
Experimental Studies on Infiltration/Soil-Water Movement Processes and Green-AMPT Modeling
(North Dakota State University, 2011)Experimental studies on infiltration/soil-water movement processes are vital to better understanding movement of soil-water in the vadose zone. The objective of this experimental research was to investigate infiltratio ... -
Explore Accelerated PCC Pavement Repairs Using Metakaolin-Based Geopolymer Concrete
(North Dakota State University, 2015)In order to adopt geopolymer concrete as a pavement repair material due to its better durability, splitting and slant shear tests are performed. Effect of curing time, degradation of the pavement concrete under different ... -
Exploring Chemically Treated Fiber Reinforced Pervious Concrete Through Image Based Micromechanical Modeling
(North Dakota State University, 2019)Pervious concrete has been widely used in parking lots and airport fields. However, past experience has shown durability and strength of the pervious concrete remains a challenge for adopting them in wider applications, ... -
Fate and Characteristics of Dissolved Organic Nitrogen through Wastewater Treatment Systems
(North Dakota State University, 2012)Dissolved organic nitrogen (DON) represents a significant portion (25-80%) of total dissolved nitrogen in the final effluent of wastewater treatment plants (WWTPs). DON in treated wastewater, once degraded, causes oxygen ... -
Fate and Transformation of a Conjugated Natural Hormone 17β-Estradiol-3-Glucuronide in Soil-Water Systems
(North Dakota State University, 2011)The objectives of the study were to investigate the sorption and degradation of a glucuronide conjugated natural hormone, 17β-estradio1-3-glucuronide (E2-3G), and its estrogenic metabolites in soil-water systems. Radiolabeled ... -
Filamentous Growth in Entrapped Microbial Cell Reactor Treating Wastewater
(North Dakota State University, 2010)The overgrowth of filamentous microorganisms in wastewater treatment systems is a common adversary condition leading to foaming, poor sludge settling problems, and reduction in organic removal efficiency. Entrapped ... -
Fracture Initiating Mechanism in Additively Manufactured 17-4 Stainless Steel
(North Dakota State University, 2022)Additive manufacturing provides exceptional geometrical freedom to the designers and enables the production of parts that cannot be made through subtractive processes. Defects in additively manufactured (AM) metals are ... -
Functionality of a Damaged Steel Truss Bridge Strengthened with Post-Tensioned CFRP Tendons
(North Dakota State University, 2012)This research program investigates the performance of a steel truss bridge when subjected to both localized web damage and a subsequent post-tensioned strengthening approach. The investigation utilizes a combined approach ... -
GFRP Bars in Concrete toward Corrosion-free RC Structures: Bond Behavior, Characterization, and Long-term Durability Prediction
(North Dakota State University, 2016)Corrosion of steel reinforcements is the leading causes of malfunction or even failures of reinforced concrete (RC) structures nationwide and worldwide for many decades. This arises up to substantial economic burden on ... -
Holistic Risk Assessment of Surface Water Contamination by Naturally Occurring Radioactive Material in Oil Produced Water from the Bakken Shale
(North Dakota State University, 2016)The risks to the environment and human health due to hydraulic fracturing (HF) in onshore unconventional oil and gas (O&G) development have been studied in the past but results are inconclusive. A common shortcoming in ... -
Hydrologic Experiments and Analysis: The Effect of Microtopography on Runoff Generation
(North Dakota State University, 2014)Microtopography is an important factor in hydrologic processes. The purpose of this research was to study the effects of microtopography on runoff generation. Specifically, this was performed through an array of physical ... -
Hygrothermal Effects of Air Cavities Behind Claddings on Building Envelopes
(North Dakota State University, 2022)Air cavity behind claddings within building envelope provides an approach to mitigating building moisture-related issues as well as improving the building’s thermal performance. However, studies in literature commonly ... -
Identification of Delamination Defects in CFRP Materials through Lamb Wave Responses
(North Dakota State University, 2014)Delamination is currently a largely undetectable form of damage in composite laminate materials. This thesis will develop a method to more easily detect delamination damage within composite materials. Using finite element ... -
Identification, Categorization, and Prediction of Drought in Cold Climate Regions
(North Dakota State University, 2021)To mitigate drought losses, identification, categorization, and prediction of droughts are essential. The objectives of this dissertation research are (1) to improve drought identification in cold climate regions by ... -
Identifying Causes of Dissolved Oxygen Depletion and Determination of Sediment Oxygen Demand in the Souris River
(North Dakota State University, 2013)The Upper Souris River was placed on the Environmental Protection Agencies (EPA) impaired waters list for low dissolved oxygen (DO). A Total Maximum Daily Load (TMDL) study was conducted to determine possible causes of DO ... -
Image-Based Hybrid Structural Health Monitoring Through Artificial Intelligence
(North Dakota State University, 2022)Bridges are widely used in human life. Understanding structural performance, assessing structural conditions, and providing in-time decision are crucial components in structural health monitoring (SHM), to avoid catastrophic ... -
Improved Hydrologic Modeling for Characterizing Variable Contributing Areas and Threshold-Controlled Overland Flow in Depression-Dominated Areas
(North Dakota State University, 2020)Surface depressions are important topographic features, which affect overland flow, infiltration, and other hydrologic processes. Specifically, depressions undergo filling-spilling-merging-splitting processes under natural ... -
In Situ Groundwater Remediation using Enricher Reactor-Permeable Reactive Biobarrier
(North Dakota State University, 2012)Permeable reactive biobarrier (PRBB) is a flow-through zone where microorganisms degrade contaminants in groundwater. Discontinuous presence of contaminants in groundwater causes performance loss of a PRBB in removing the ... -
In-Line Fiber Optic Sensing System for Pipeline Corrosion Detection
(North Dakota State University, 2015)To understand the impact of corrosion on metal on-shore buried transmission pipeline, which is one of the most critical damages, corrosion evaluation plays an important role. An effective approach for real-time in-line ...