Index Catalog // ScholarsArchive@OSU

Design and fatigue behavior of near-surface mounted CFRP bars for shear strengthening of RC bridge girders

Creator:: Johnson, Brandon Ang
Abstract:: Carbon fiber reinforced polymer (CFRP) materials are emerging as an effective means of strengthening and rehabilitating bridges. Near surface mounting (NSM) is a newer technique for application of CFRP for retrofitting of bridge members that provides advantages over conventional strengthening techniques. The technique is still new and uncertainties remain regarding...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Brandon Ang Johnson

Flexural anchorage performance and strengthening on negative moment regions using near-surface mounted retrofitting in reinforced concrete bridge girders

Creator:: Barker, Laura
Abstract:: Large numbers of reinforced concrete deck girder (RCDG) bridges were built during the highway infrastructure boom of the 1950's. The advent of standardized deformed steel reinforcing bars during this time allowed for straight bar terminations in flexural tension regions. Designers of the time terminated reinforcing bars where they were no...
Resource Type:: Masters Thesis
Full Text:: ) bridges were built during the highway infrastructure boom of the 1950’s. The advent of standardized

The Fundamental Behavior of CLT Floor-to-Wall Connections in Fire

Creator:: Redus, James Aaron
Abstract:: This thesis focuses on the fundamental behavior of CLT floor-to-wall connections during a fire. Cross-laminated timber (CLT) panelized structures rely on floor-to-wall connections for the load path and stability of the structure. Additionally, the fire performance of these connections is critical to prevent horizontal or vertical fire spread within these...
Resource Type:: Masters Thesis
Full Text:: compartment fire tests and reported flame-through in the floor- to-wall connections (Brandon et al. 2021

Influence of silt size and content on static liquefaction potential of sand

Creator:: Monkul, M. Murat
Abstract:: Different specimen preparation methods such as moist tamping, dry funnel deposition, slurry deposition, dry air pluviation have been reported in the literature to investigate the undrained behavior of silty sands. Similarly, different means have been used to densify the soils prepared with such methods. However, the influence of the densification...
Resource Type:: Dissertation
Full Text:: Professor Dr. Scott A. Ashford for his encouragement and support during Dr. Yamamuro‟s absence. I would

Design and environmental performance of near-surface mounted carbon fiber reinforced polymer strips for shear strengthening reinforced concrete bridge girders

Creator:: Goebel, Jacob Hans
Abstract:: During the interstate expansion of the 1950s, many conventionally reinforced concrete deck girder bridges were built throughout the country. These now vintage bridges commonly exhibit diagonal cracking and rate inadequately for shear, thus they are candidates for shear strengthening to extend their useful life. Near-surface mounted (NSM) retrofitting is a...
Resource Type:: Masters Thesis
Full Text:: co-workers, including: Brandon Johnson, Mary Ann Triska, Tugrul Turan, Michael Dyson, Thomas

Non-destructive determination of yield stress for in-situ gusset plates

Creator:: Pflaum, Therese Michelle
Abstract:: Failure of a gusset plate that caused the I-35W Bridge collapse in Minneapolis, MN resulted in mandated rating of connections by the Federal Highway Administration (FHWA). Rating connections requires material properties as an input. The material properties are generally reported on the available detailed drawings for bridges. However, some bridges...
Resource Type:: Masters Thesis
Full Text:: recognize my undergrad assistant Brandon Zaikoski for his help with strain gauging and experimental

Assessing the Trade-Off Between Sustainability and Resiliency of Reinforced Concrete Alternatives in Corrosive Conditions: An LCA-System Dynamics Approach

Creator:: Moreno Rangel, Erick D.
Abstract:: Concrete has been categorized as a key contributor of CO2 (carbon) emissions into the atmosphere. This is mostly associated with the production of ordinary portland cement (OPC). The concrete and cement industries are pursuing a path to reduce their carbon emissions generally in accordance with the climate change goals outlined...
Resource Type:: Masters Thesis
Full Text:: , Austin Cooksey, Ashley Monchamp, Jordan Butler, Will Butler, Kevin Sink, Brandon Bond, Joel Frasieur

An Agent-Based Simulation for Emergency Warning Dissemination in a Multiplex Social Network

Creator:: Koll, Charles D.
Abstract:: The variety of natural disasters provide different sets of characteristics and properties with unique challenges. One significant difference between hazard types is prewarning lead time, the amount of time individuals have from a potential warning to the disaster occurring. Rapid onset disasters may not provide an official warning about a...
Resource Type:: Masters Thesis
Full Text:: model used to identify the spread of infectious diseases. Each component – S: susceptible, I

Centrifuge Modeling of Soil Response to Tsunami-like Rapid Flooding and the Subsequent Drawdown

Creator:: Exton, Margaret C.
Abstract:: Soil instability from tsunami hazards causes substantial damage to coastal infrastructure (e.g., the damage caused by the 2011 Great East Japan Tsunami, or the Heisei Tsunami). Tsunamis are unpredictable, so it is difficult to obtain field-scale measurements. Simulating tsunamis in a laboratory setting is therefore important to further understanding of...
Resource Type:: Dissertation
Full Text:: experiment. Results until approximately 0.35 s are shown. . . . . . . 89 6.6 Wave pressure transducer data

Geotechnical characterization and drained shear strength of a limestone aggregate

Creator:: Knierim, Christina D.
Abstract:: Aggregate piers are a method of ground improvement used to increase the strength and bearing capacity of the native geological soils for the support of new civil infrastructure. The understanding of the bearing failure mechanism of aggregate piers remains largely unstudied. The effects of design variables in the failure mechanisms...
Resource Type:: Honors College Thesis
Full Text:: with s, or shear strength. φ and c are referred to as the Mohr-Coulomb strength parameters. For sands

Geotechnical significance of poorly crystalline soils derived from volcanic ash

Creator:: Thrall, F. G.
Resource Type:: Dissertation

Influence of diagonal cracks on negative moment flexural anchorage performance in reinforced concrete bridge girders

Creator:: Goodall, Joshua K.
Abstract:: Large numbers of vintage reinforced concrete deck-girder bridges remain in the national bridge inventory. Many of these exhibit diagonal cracking and other distress. Due to the design practices of the time, it is common to observe cracks at locations where flexural reinforcing steel is terminated along the span. The presence...
Resource Type:: Masters Thesis
Full Text:: Sopal, Brandon Johnson, Jake Goebel, Thomas Schumacher, A. Ekin Senturk, and O. Tugrul Turan for their

Evaluating Industrialization Rate in Construction: A Quantification Model

Creator:: Liu, Ding
Abstract:: The concept of construction industrialization, first raised in the 1960s, refers to the transfer of on-site construction work to an off-site factory to improve quality and reduce cost, time, and safety issues. In some countries, industrialization of construction projects is highly recommended and promoted by governments and local construction institutions...
Resource Type:: Dissertation
Full Text:: and Goulding 2011), off-site manufacturing (Hampson and Brandon 2004), prefabrication (Tam, et al

Cost-Benefit Evaluation of Energy-Efficient Building Strategies in Single-Family Affordable Housing

Creator:: Iliff, Helen M.
Abstract:: The goal of this thesis is to ease the adoption of energy-efficient (EE) building strategies for affordable homes in the United States (US). Low-wage earning households spend nearly three times the proportion of their gross annual income on home energy bills resulting in higher energy burden for them when compared...
Resource Type:: Masters Thesis
Full Text:: software. Building information models (BIM)s were presented to the architect and general contractors to

Pore Water Pressure Response in Soil During Tsunami Loading : Numerical Formulation and Experimentation

Creator:: Abdollahi, Abbas
Abstract:: Tsunami loading can cause sediment instability, which can compromise the structural integrity of coastal buildings and infrastructure. To understand the process by which a tsunami can cause sediment instability, it is necessary to understand how the pore water pressure in the soil changes during tsunami loading. Tsunami run-up causes the...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 LIST OF FIGURES (Continued) Figure Page 5.12 Case S-LE-UW: a) total pore water pressure at

Methods for strengthening flexural steel details in reinforced concrete bridge girders using a near-surface mounted retrofitting technique

Creator:: Amneus, Deanna
Abstract:: Many older reinforced concrete deck girder (RCDG) bridges contain straight bar terminations of flexural reinforcement. Common bridge design practice of the 1950s did not consider the additional demands on the terminated bars from shear and flexure. Moreover, more stringent code specifications and heavier permit trucks contribute to the insufficient ratings...
Resource Type:: Masters Thesis
Full Text:: . Undergraduate research assistants Kyle England, Brandon Zaikoski, and Caleb Lennon were integral in the

Shear reinforcement effects of discrete columns in liquefiable soils

Creator:: Rayamajhi, Deepak
Abstract:: Discrete columns, such as stone and soil-cement columns, are often used to improve the liquefaction resistance of loose sandy ground. In particular, stone columns are considered to increase resistance potential by densification, drainage, and reinforcement mechanisms. For silty soil, the shear stress reduction resulting from the reinforcing effect of stiffer...
Resource Type:: Dissertation
Full Text:: 4.2: Typical response for unimproved soil [with Ks= 1x 10-5 m/s, (N1)60 = 15, and Hliq = 9 m] and

Internal curing of high-performance concrete for bridge decks

Creator:: Deboodt, Tyler
Abstract:: High performance concrete (HPC) provides a long lasting, durable concrete that is typically used in bridge decks due to its low permeability, high abrasion resistance, freeze-thaw resistance and strength. However, this type of concrete is highly susceptible to the deleterious effects of both autogenous and drying shrinkage. Both types of...
Resource Type:: Masters Thesis
Full Text:: , Brandon Johnson, Kayla Jerde, Andrea Brush, Dr. Thomas Schumacher, Dave Newborn, Dave Honegger and Seth

Flexural steel anchorage performance at diagonal crack locations

Creator:: Triska, Mary Ann
Abstract:: Large numbers of reinforced concrete deck girder bridges that were constructed during the interstate system expansion of the 1950s have developed diagonal cracking in the stems. Compared to the present AASHTO-LRFD standards, the provisions of the 1950s allowed for higher shear stress in the concrete, thus reducing the amount of...
Resource Type:: Masters Thesis
Full Text:: , Duncan Stark, Eric Goodall, Brandon Johnson, and Jake Goebel. I am very thankful to my husband

Characterization of reinforced fill soil, soil-reinforcement interaction, and internal stability of very tall MSE walls

Creator:: Walters, James J.
Abstract:: In many geotechnical design situations involving tight right-of-way constraints, Mechanically Stabilized Earth (MSE) walls are often the most cost-effective and reliable earth retention technology among available alternatives. However, few well-documented case histories with detailed material testing, instrumentation programs and construction observation of performance are available in the literature. Despite the...
Resource Type:: Masters Thesis

Use of Controlled Blasting to Quantify the Dynamic, In-Situ, Nonlinear Inelastic Response of Soils

Creator:: Jana, Amalesh
Abstract:: The seismic response of deep deposits of liquefiable and cyclic-softening susceptible soils has presented the geotechnical profession with significant engineering challenges. Strong ground motions may serve to soften soils under cyclic shear, trigger liquefaction, and produce damaging displacements as a consequence. This study improves the understanding of the in-situ, nonlinear,...
Resource Type:: Dissertation
Full Text:: to P- and S-waves .................................................... 223 Frequency Content of

Improving Region-Scale Landslide Inventory and Susceptibility Mapping

Creator:: Bunn, Michael D.
Abstract:: Landslides are a natural hazard that have major societal, economic, and environmental impacts. The understanding of landslides begins with the observation that they are a spatial problem. Spatial relationships have historically been explored with maps, and landslides are no different. Such maps range in focus from inventory maps, which identify...
Resource Type:: Dissertation

A Full-Scale Experimental Investigation of the Bearing Performance of Aggregate Pier-Supported Shallow Foundations

Creator:: Martin, John P.
Abstract:: Aggregate piers have been used for centuries, with increasing occurrence in the last few decades. Their usage has been driven by land development demand and enabled through equipment and engineering improvements. Understanding the principles controlling bearing capacities and serviceability performance has been an ongoing area of interest for structures supported...
Resource Type:: Masters Thesis

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