Index Catalog // ScholarsArchive@OSU

Test method to determine the degree of asphalt stripping from aggregates

Creator:: Boudreau, Richard L.
Abstract:: Moisture damage has long been recognized as one of the most critical factors influencing the performance of asphalt concrete (AC) pavements. This moistureinduced damage occurs from either the physical separation of the asphalt film from the aggregate or the softening of the asphalt binder within the AC mixture in the...
Resource Type:: Masters Thesis
Full Text:: from aggregates AN ABSTRACT OF THE THESIS OF Richard L. Boudreau for the degree of Master of Science

Development of structural layer coefficients for open graded asphalt emulsion mixes

Creator:: Hatch, David Russell
Abstract:: This paper describes the development of structural layer coefficients for open graded asphalt emulsion surfacing layers which can be used with the AASHO pavement design method, as modified by the U. S. Forest Service, Region 6. A field survey conducted to document the history, performance and material characteristics of in-service...
Resource Type:: Masters Thesis
Full Text:: Professor R. G. Hicks and Jean Walter of Oregon State University, Messrs. L. E. Santucci and D. Fink of

Simulation of coastal processes in a circular wave basin

Creator:: Katzev, David H.
Abstract:: The circular wave basin provides a means of physically modeling the nearshore without the typical problems associated with end walls. Three different coastal processes were examined to demonstrate the use of a spiral wavemaker in a circular wave basin. These were longshore currents, shear waves, and groin circulation. A beach...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David H. Katzev for the degree of Master of Science in Civil

Correlation of methods for solving indeterminate frames

Creator:: Liu, David Cheng-Tso
Resource Type:: Masters Thesis
Full Text:: ±a 322 - Lii 0. - I i e = 20 25 Z- An p' A: 2Onr çi =_3. 7- '4 g -- 2_L L(. 50 4

Numerical Analysis of a Spine as a Retrofit of a Moment-Resisting Frame

Creator:: Rivera Torres, David M.
Abstract:: Steel moment-resisting frames (MRFs) are widely used in the United States to resist seismic forces. MRFs have many advantages, including architectural versatility, vetted member and connection detailing requirements, and high ductility for special MRFs (SMRF). However, MRFs require large members to meet story drift criteria. Moreover, strong-column-weak-beam requirements can result...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David Miguel

Owner's Role in Brownfield Remediation : The Brownfield Experts' Perspective

Creator:: Saberiyan, Amireh G.
Abstract:: Former industrial or commercial sites that have been left unused are typically referred to as brownfield sites, or simply, brownfields. Many communities have such properties that are abandoned, idle or underused. Despite public efforts to facilitate brownfields revitalization projects, the rate of remediation remains unexpectedly slow. Efforts to resolve this...
Resource Type:: Dissertation
Full Text:: Properties AN ABSTRACT OF THE DISSERTATION OF Amireh G. Saberiyan for the degree of Doctor of

Demonstration of a permeable barrier technology for the in-situ bioremediation of pentachlorophenol contaminated groundwater

Creator:: Cole, Jason David
Abstract:: A pilot scale demonstration of a biological permeable barrier was conducted in a pentachlorophenol-contaminated aquifer at a wood preserving facility. A permeable reactor was constructed to fit within a large diameter well. Arranged in series, a cylindrical reactor 24" x 36" (0.61 x 0.91m) (diameter x height) was partitioned to...
Resource Type:: Dissertation
Full Text:: Jason David Cole for the degree of Doctor of Philosophy in Civil Engineering presented on May 5,2000

Pentacholorophenol reductive dechlorination and the significance of temperature : development of an interceptor trench technology

Creator:: Cole, Jason David
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jason David Cole for the

Down-borehole permeable barrier reactor : verification of complete mineralization of pentachlorophenol in a sequential anaerobic-aerobic process

Creator:: Roberts, David Bradley
Resource Type:: Masters Thesis
Full Text:: septa bottles (Fisher Scientific, Santa Clara, CA) containing: 3.2 g/L Total Volatile Solids (TVS

Measurement of the rates of reductive dechlorination of chlorinated phenols

Creator:: Nicholson, David K.
Abstract:: Knowledge of a compound's degradation pathway is crucial to the assessment of risk at contaminated sites. Pentachlorophenol and its metabolic products can serve as model compounds to study the fate and transport of halogenated aromatic compounds in the environment. Acclimation of anaerobic sewage sludge to pentachlorophenol produced a microbial consortium...
Resource Type:: Masters Thesis
Full Text:: /min. An eluant consisting of 0.191 g/L NaCO3 and 0.143 g/L NaHCO3 was used. Total suspended solids

Safety and efficiency benefits of traffic signal countdown timers : a driving simulator study

Creator:: Islam, Mohammad Rabiul
Abstract:: Traffic signal countdown timers (TSCT) are innovative, practical and cost effective technologies with the potential to improve efficiency and safety at signalized intersections. The purpose of these devices is to assist motorists in decision making at signalized intersections with real time signal change information. While successful implementation of these devices...
Resource Type:: Dissertation
Full Text:: : __________________________________________________ David S. Hurwitz Traffic signal countdown timers (TSCT) are innovative, practical and

Climate Change Impacts to Estuarine Hydrodynamics: Tools, Methodologies, and Predictions

Creator:: Parker, Kai A.
Abstract:: Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with the idea that hazards and environmental pressures are changing and may be characteristically different in the near future. This has led to a need for scientific knowledge and tools that can help coastal communities prepare and build resilience...
Resource Type:: Dissertation
Full Text:: David F. Hill Coastal communities in the U.S. Pacific Northwest (PNW) are rapidly engaging with

Understanding Passenger Perception of Air Travel Safety Through Advanced Econometric Modeling

Creator:: Olsen, Aleah G.
Abstract:: Passenger security screening is a continuously evolving process and not much is known about how passengers perceive its effectiveness in keeping air travel safe. The provided thesis consists of two manuscripts that expand the literature on passenger perception of safety through the application of advanced econometric techniques. This thesis aims...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Aleah G. Olsen for the degree of Master of Science in Civil Engineering presented on

Chemical transformation of rice husk ash for sustainable, constructable, and durable binary cementitious system

Creator:: Prasittisopin, Lapyote
Abstract:: The production of cement and concrete results in the production of large amounts of CO₂ emissions which can have significant negative environmental impacts. Using supplementary cementing materials (SCMs) as a cement replacement is an effective solution to reduce these negative environmental impacts, as most SCMs are waste by-products from other...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ David Trejo The production of cement and concrete results in the production of large amounts

Influence of transport parameters on the fresh and hardened characteristics of ready-mixed concrete

Creator:: Chen, Jiaming
Abstract:: Most specifications for ready-mix concrete (RMC) limit mixing time to 90 minutes and/or truck drum revolution counts (DRC) to 300 before discharge. These specifications have been in place for many years with the objective of ensuring the quality and performance of the finished concrete product. However, limited research has been...
Resource Type:: Masters Thesis
Full Text:: : David Trejo Most specifications for ready-mix concrete (RMC) limit mixing time to 90 minutes and/or

Development of a Reliability-Based Framework and Empirical Models for Justifying Allowable Chloride Limits and Quantifying Critical Input Variables for Predicting the Service Life of Reinforced Concrete Structures

Creator:: Shakouri Hassanabadi, Mahmoud
Abstract:: Significant progress has been made over the past 20 years in developing models to estimate the service-life of reinforced concrete systems. The basic understandings of the mechanisms that control the transport of ions and moisture in concrete systems have been well researched and models for determining corrosion initiation, specifically chloride-induced...
Resource Type:: Dissertation
Full Text:: : ________________________________________________ David Trejo Significant progress has been made over the past 20 years in developing

Critical Assessment of Chloride States and Quantities in Ordinary Portland and Specialty Cements

Creator:: Ahmed, Ahmed Abdulhaq
Abstract:: The constituent materials of concrete often contain chlorides. The presence of chlorides in sufficient amounts can disrupt the passive layer, also known as the passive film, that protects the reinforcing steel in concrete. This disruption can lead to premature corrosion of the reinforcing steel in concrete. To minimize the risk...
Resource Type:: Dissertation
Full Text:: Cements Abstract approved: ________________________________________________ David Trejo

Development of a new mixture proportioning method and assessing the influence of material characteristics on flowing concrete mixtures

Creator:: Hendrix, Greg
Abstract:: Cast-in-drilled-hole (CIDH) piles are often constructed to depths that are inaccessible to internal vibration of the concrete. Internal vibration is necessary to consolidate the concrete and, if not performed, then typically inspection pipes are necessary to detect the presence of voids in CIDH piles. Void detection is critical to assessing...
Resource Type:: Masters Thesis
Full Text:: Flowing Concrete Mixtures Abstract approved: David Trejo Cast-in-drilled-hole (CIDH) piles

Influence of Concrete and Construction Parameters on Chloride Test Measurements and Critical Chloride Threshold Limits

Creator:: Vaddey, Naga Pavan
Abstract:: The issue of chloride-induced corrosion of reinforcing steel in concrete and its economic impacts are well-known. Chlorides that cause reinforcement corrosion can be from constituent materials used to prepare concrete or can enter the hardened concrete when the structure is exposed to chloride environments. To minimize the risk of reinforcement...
Resource Type:: Dissertation
Full Text:: : ________________________________________________ David Trejo The issue of chloride-induced corrosion of reinforcing steel in concrete and its

Assessing the seismic performance of corroding RC bridge columns

Creator:: Guo, Yisen
Abstract:: Corrosion of reinforcement is recognized as the predominant factor that limits the service life of reinforced concrete (RC) structures exposed to aggressive environments. This corrosion deterioration can lead to damage resulting in capacity loss or even failure. For structures exposed to coastal marine environments or deicing or anti-icing applications, this...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________ David Trejo

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