Browsing Civil & Environmental Engineering by Title
Now showing items 27-46 of 104
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Damage Localization of Slab-on-Girder Bridges Through Vibration Characteristics
(North Dakota State University, 2015)An incompletely documented bridge 09-125-16 in Cass County, ND was tested by Bridge Diagnostics, Inc. (BDI). A Grillage numerical model is created with their field data to simulate the bridge responses due to traffic loads. ... -
Design of Structural Vibration Control Using Smart Materials and Devices for Earthquake-Resistant and Resilient Buildings
(North Dakota State University, 2017)Major earthquakes in recent years have highlighted the big concern of modern seismic design concept for the resilience of buildings. The overall goals of this thesis aim to design structural vibration control using smart ... -
Detection of Two-Dimensional Internal Cracks in Concrete Using Point Strain Sensors
(North Dakota State University, 2020)Tensile cracking in the concrete can destroy the structural frame since it induces water penetration in structure and foundation. For instance, in concrete pavements, cracking increases the potential for pavement distress, ... -
Development of Improved Methods for Watershed-Scale Topographic Analysis and Hydrologic Modeling
(North Dakota State University, 2020)Surface depressions are one of the significant topographic characteristics in depression-dominated areas and can retain runoff and break the hydrologic continuity in watersheds. In traditional semi-distributed models, the ... -
Development of Operational Strategies to Minimize Bromate Formation in the Moorhead Water Treatment Plant
(North Dakota State University, 2014)A recent study at the Moorhead water treatment plant (MWTP) determined that bromate formed during ozone disinfection and, at times, exceeded the maximum contaminant level (MCL) of 10 parts per billion (ppb) in the summer ... -
Development of Passenger Car Equivalency Values for Heavy Vehicles for Protected Left-Turn Movements at Signalized Intersections
(North Dakota State University, 2016)The Highway Capacity Manual (HCM) provides methods to account for the impact of heavy vehicles in the operational assessment and design of signalized intersections. However, the overall impact of heavy vehicles on the ... -
Dispersion Effectiveness of Carbon Nanotube Additives in Self-sensing Cementitious Materials for Structural Health Monitoring
(North Dakota State University, 2016)The use of self-sensing materials such as piezo-resistive cementitious materials modified by carbon nanotube (CNTs) additives may be able to achieve a potential real time structural health monitoring in structures. However, ... -
Drive-By Bridge Damage Identification Through Virtual Simulations
(North Dakota State University, 2019)With massive infrastructures built in US, timely condition assessment of these infrastructures becomes critical to daily traffic and economics. Due to high cost, long time consumption of direct condition assessment methods, ... -
Durability of Concrete Members Strengthened with CFRP Sheets under Harsh Environmental Conditions
(North Dakota State University, 2010)The deterioration of concrete structures 1s a maJor concern to the infrastructure community. Typical sources of deterioration may include aging,.incrcased service load, and environmental damage. Structural rehabilitation ... -
Dynamic Interaction of Vehicle and Bridge Subjected to Prestress Force Loss and Foundation Settlement
(North Dakota State University, 2016)Plenty of bridges in U.S. are suffering from prestress force loss and foundation settlements. The loss of prestress force in bridge load-carrying members such as girders may lead to the malfunction and even failure of the ... -
Earthquake-induced inelastic displacement ratio in reinforced concrete box girder bridges in California
(North Dakota State University, 2024)In conventionally designed bridges, the inelastic displacement is estimated using an amplification factor (R_d) suggested by AASHTO which was developed based on Single-Degree-of-Freedom system. This study models the nonlinear ... -
Electrochemical Investigation of Corrosion Resistance of Weldments in Steel Bridges
(North Dakota State University, 2015)Welding is commonly used for connecting steel components in steel bridge fabrication and construction. Welding processes change the microstructures, properties of surrounding steel and its surface texture. In this study, ... -
Energy-Saving Non-Metallic Connectors for Precast Sandwich Wall Systems in Cold Regions
(North Dakota State University, 2014)Conserving energy in large structural buildings has become very important in today's economy. A number of buildings today are constructed with sandwich wall panels. Steel connections are most commonly used in these panels. ... -
Enhancement of Dispersibility of Zero-Valent Iron Nanoparticles for Environmental Remediation: Entrapment and Surface Modification with Polymers
(North Dakota State University, 2012)Nanoscale zero-valent iron (NZVI) particles have been surface modified and used for contaminant remediation. NZVI tend to agglomerate due to magnetic and van der Waals forces and form larger particles that settle down in ... -
Enhancing the Performance of Crumb Rubber Modified Asphalt through Controlling the Internal Network Structure Developed
(North Dakota State University, 2016)Sustainability presents a pathway for future generations to have a better life. Cradle to cradle methodology is the essence of sustainability. In cradle to cradle approach, we aim to reuti-lize a given waste instead of ... -
Estimation of the Capacity of a Basic Freeway and Weaving Segment Under Traditional, Autonomous, and Connected Autonomous Vehicles, Using Oversaturated Traffic Condition Data
(North Dakota State University, 2022)Autonomous vehicles (AVs) and connected autonomous vehicles (CAVs) will be the standard in transportation in the future. The use of such vehicles could minimize traffic oscillation and travel time and boost safety and ... -
Evaluating the Effects of Rail Preemption Strategies on Highway Safety and Operations
(North Dakota State University, 2011)Previous research related to signal preemption near highway-rail grade crossings has emphasized safety considerations, which are paramount due to the severity of potential train-vehicle collisions. The purpose of this ... -
Evaluating the Safety and Mobility of the Cumulative-Anticipative Car-Following Model for Connected Autonomous Vehicles
(North Dakota State University, 2020)The advancements of vehicle automation are progressively improving resulting in safer driving environments in addition to more efficient mobility and fuel cost savings. However, autonomous and connected autonomous vehicles ... -
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 ...