Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Structural Engineering (17)
- Construction Engineering and Management (12)
- Transportation Engineering (11)
- Architecture (6)
- Computational Engineering (6)
-
- Environmental Engineering (6)
- Materials Science and Engineering (6)
- Construction Engineering (5)
- Geotechnical Engineering (5)
- Physical Sciences and Mathematics (5)
- Risk Analysis (5)
- Social and Behavioral Sciences (4)
- Structural Materials (4)
- Artificial Intelligence and Robotics (3)
- Computer Sciences (3)
- Environmental Sciences (3)
- Mechanical Engineering (3)
- Operations Research, Systems Engineering and Industrial Engineering (3)
- Aerospace Engineering (2)
- Architectural Engineering (2)
- Computer Engineering (2)
- Engineering Mechanics (2)
- Engineering Science and Materials (2)
- Longitudinal Data Analysis and Time Series (2)
- Operational Research (2)
- Other Civil and Environmental Engineering (2)
- Statistics and Probability (2)
- Keyword
-
- Concrete (9)
- Liquefaction (6)
- Masonry (5)
- Sustainability (5)
- Optimization (4)
-
- Reliability (4)
- Simulation (4)
- Transportation (4)
- UHPC (4)
- ASR (3)
- Bond strength (3)
- Bridge (3)
- Bridges (3)
- Corrosion (3)
- Durability (3)
- Modeling (3)
- Resilience (3)
- Retrofit (3)
- Safety (3)
- Scour (3)
- Uncertainty Quantification (3)
- Abbreviated Injury Scale (2)
- Aggregate (2)
- Aging (2)
- Artificial Intelligence (2)
- Autonomous vehicle (2)
- Bond Strength (2)
- Braced excavation (2)
- Building Contents (2)
- Cone penetration test (2)
- Publication Year
- Publication
- Publication Type
Articles 121 - 150 of 281
Full-Text Articles in Civil Engineering
Effect Of Differential Movement Of Straight Reinforcing Bars During Early Age Curing On The Bond Strength, Tyler Andrews
Effect Of Differential Movement Of Straight Reinforcing Bars During Early Age Curing On The Bond Strength, Tyler Andrews
All Theses
As the nation's infrastructure continues to age, the number of structural deficiencies is rising. Accordingly, there is a great need and desire to replace these failing components in a quick and efficient fashion. Prefabricated elements for structures such as bridges and parking decks are commonly implemented in this process in order to save both time and money. These prefabricated elements are often subjected to moving live loads during construction and repair which, consequently, result in differential movements occurring across the joints connecting the elements of these structures. Potential reductions in joint capacity, joint stiffness, and structural durability are the byproducts …
Data Driven, Performance Based Parking Management In A University Setting, Brian Maleck
Data Driven, Performance Based Parking Management In A University Setting, Brian Maleck
All Theses
With university enrollment increasing, campuses are becoming under increased strain for parking. More students results in more cars on an already stressed parking infrastructure. In many instances, university parking management offices are being asked to accommodate this increase in parking without the construction of new parking infrastructure. In order to accommodate these demands, better parking management is required.
This research develops a framework to evaluate current parking management practices and pinpoint methods to improve upon current practices. The framework is generalized for use by any size and type of university. Clemson University's campus in Clemson, SC was used as a …
Probabilistic Back Analysis Of Geotechnical Systems, Lei Wang
Probabilistic Back Analysis Of Geotechnical Systems, Lei Wang
All Theses
This thesis is aimed at applying the probabilistic approaches for back analysis of geotechnical systems. First, a probabilistic back-analysis of a recent slope failure at a site on Freeway No. 3 in northern Taiwan is presented. The Markov Chain Monte Carlo (MCMC) simulation is used to back-calculate the geotechnical strength parameters and the anchor force. These inverse analysis results, which agree closely with the findings of the post-event investigations, are then used to validate the maximum likelihood method, a computationally more efficient back-analysis approach. The improved knowledge of the geotechnical strength parameters and the anchor force gained through the probabilistic …
An Analysis Of A Missing Design Concept For Sustainable Buildings: Addressing The Safety And Health Of The Construction Worker, Christopher Almond
An Analysis Of A Missing Design Concept For Sustainable Buildings: Addressing The Safety And Health Of The Construction Worker, Christopher Almond
All Theses
Construction work is inherently dangerous. The 2010 U.S. Bureau of Labor Statistics show the construction industry had the most fatal injuries of all industry sectors, 17%. U.S. regulations place the responsibility for construction safety on the construction contractor. However, owners and designers have the potential to affect the safety of the construction workforce. Owners have gotten more involved in promoting the safety and health of construction workers in recent years; however, studies show that the safety and health of the construction workforce is not typically considered by designers.
The Naval Facilities Engineering Command (NAVFAC) - the U.S. Navy's systems command …
Flexural Strength Reliability Of Visually Graded Southern Pine Dimensional Lumber, Mengyu Yang
Flexural Strength Reliability Of Visually Graded Southern Pine Dimensional Lumber, Mengyu Yang
All Theses
The reference design values published in the National Design Specification (NDS) for Wood Construction are derived from full-scale testing of lumber samples performed in the 1980s. This testing program is commonly known as the In-GradeTest Program. Selective annual sample tests of visually graded Southern Pine lumber from 1994 to 2010 revealed an overall decreasing trend in the mechanical properties. Because of this alarming observation, a new round of full-scale In-Grade test of visually graded Southern Pine was initiated in 2010. The new test data indicated significant reductions in certain design values published in the current design code (2005 NDS). …
Impact Of Channel Conditions On Existing Scour Measuring Instruments, Md Nasimul Hoque Chowdhury
Impact Of Channel Conditions On Existing Scour Measuring Instruments, Md Nasimul Hoque Chowdhury
All Theses
Scour around bridge piers and abutments, is the prominent reason for bridge failures. Bridge failures have substantial effects on economy and human lives. About 60% of the total bridge failures in U.S. can be attributed to scour. In the past, scour has been responsible for several million dollars in bridge repair cost. Given the threat to the bridge infrastructure due to scour, the U.S. Federal Highway Administration has proposed several countermeasures to reduce the impact of bed degradation. One of these countermeasures that is particularly relevant during peak flow periods is the real-time scour monitoring. Scour monitoring involves real-time data …
Application Of Parameter Estimation And Calibration Method For Car-Following Models, Md Rahman
Application Of Parameter Estimation And Calibration Method For Car-Following Models, Md Rahman
All Theses
Both safety and the capacity of the roadway system are highly dependent on the car-following characteristics of drivers. Car-following theory describes the driver behavior of vehicles following other vehicles in a traffic stream. In the last few decades, many car-following models have been developed; however, studies are still needed to improve their accuracy and reliability.
Car-following models are a vital component of traffic simulation tools that attempt to mimic driver behavior in the real world. Microscopic traffic simulators, particularly car-following models, have been extensively used in current traffic engineering studies and safety research. These models are a vital component of …
Corrosion Activity In Precast Concrete Elements And Cementitious Closure Pours, Shabi Abbas Udaipurwala
Corrosion Activity In Precast Concrete Elements And Cementitious Closure Pours, Shabi Abbas Udaipurwala
All Theses
The use of prefabricated elements in the construction of highway bridges has been a common practice in the United States since 1950s. Precast concrete adjacent box beam girder bridges are quite popular given that the precast elements not only have structural capacity to span across the supports, but also form the bridge deck. These bridges have generally performed well during the initial years after construction, but recent failures in Pennsylvania and Indiana have aroused a nationwide alarm to investigate the causes of failure and find solutions to repair these bridges or develop design for new replacement bridges. It was found …
Development Of A Rating System To Measure The Vulnerability Of Residential Homes To Natural Hazards, Corey Cattano
Development Of A Rating System To Measure The Vulnerability Of Residential Homes To Natural Hazards, Corey Cattano
All Dissertations
Hurricanes and tropical storms continue to damage the United States coastline where population migration increases and tourism thrives. Extended dry spells, high winds, and hot summers in the Mountain and Pacific West regions promote ideal conditions for seemingly uncontrollable wildfires. Additionally, the increased frequency of unstable climate conditions foretells signs of Mother Nature not letting up. With recent events such as Superstorm Sandy and the Waldo Canyon wildfires in mind, there is a strong need to improve hazard mitigation techniques in residential homes and encourage resilient building methods. Research within this field is challenging due to the lack of descriptive …
Optimizing Scm Proportions To Meet Multiple Performance Characters Of Ternary Concrete Mixtures Using Simplex-Centroid Design And Analysis Techniques, Sujay Math
All Dissertations
High performance concrete mixtures often contain multiple cementitious components. Among these, cement is the most expensive in addition to having a higher carbon footprint. Life cycle assessment of cement production reveals that the cement content is the most important factor in determining a concrete mixture's embodied energy and carbon footprint. Compressive strength, an important property of concrete, is directly related to the quantity of cement used in the mixture. However, higher quantities of cement lead to durability issues. The increased concerns about the durability of concrete over the past decade have increased focus on improving the long-term performance of concrete …
Freeze-Thaw Durability Of Portland Cement Concrete Due To Addition Of Crumb Rubber Aggregates, Shubhada Gadkar
Freeze-Thaw Durability Of Portland Cement Concrete Due To Addition Of Crumb Rubber Aggregates, Shubhada Gadkar
All Dissertations
Ground tire rubber also known as crumb rubber has been widely used in asphalt concrete over the past several years due to its ability to improve temperature susceptibility of asphalt binders and enhance the performance of asphalt pavements. However, its inclusion in portland cement concrete is comparatively recent and more research is needed before adopting it as a regular construction material. Past research has shown that while addition of rubber aggregates in concrete reduces its compressive, tensile and flexural strengths, but is useful in improving durability properties as freeze-thaw resistance due to the ability of crumb rubber to generate an …
Hydraulic Impact Of Porosity Distribution And Hydrologic Characterization Of Porous Pavements, William Martin
Hydraulic Impact Of Porosity Distribution And Hydrologic Characterization Of Porous Pavements, William Martin
All Dissertations
This research focused on the hydrologic characterization of porous pavement and pavement properties that can affect its hydraulic behavior. The first of these properties investigated was the presence of a vertical porosity distribution which can significantly impact the infiltration rate. A method utilizing image analysis was tested and experimentally verified. The representative elemental area (REA) was needed for this imaging method and was found to be 83.9 cm2 (13 in2). To convert the porosity distribution into a permeability distribution the relationship between porosity and permeability was found using homogenous samples. From the resulting permeability distribution an effective permeability was found …
Robust Design Optimization: Ensuring Robustness Against Uncertainty In Structural Design, Zhifeng Liu
Robust Design Optimization: Ensuring Robustness Against Uncertainty In Structural Design, Zhifeng Liu
All Dissertations
In structural design, if robustness is overlooked in design process, the acquired design is likely to have large variation in its performance due to uncertainties. In that there is no design specification that explicitly considers the robustness against such uncertainties, this dissertation elucidates design methodologies for use in selecting the optimal design parameters to minimize the effect of the hard to reduce or irreducible uncertainties on structural performance, i.e., maximizing the robustness. However, due to limited resources, structural designs are also constrained by available resources and budget. Consequently, in that a tradeoff relationship exists between the robustness and cost (i.e. …
Miniature Concrete Prism Test - A New Test Method For Evaluating The Asr Potential Of Aggregates, The Effectiveness Of Asr Mitigation And The Job Mixture, Enamur Latifee
All Dissertations
Existing test methods to characterize ASR potential of aggregates and mitigation ability of supplementary cementing materials such as the Accelerated Mortar Bar Test (AMBT) and the Concrete Prism Test (CPT) are widely accepted in the industry. Although, the AMBT is a rapid test, the results from this test can be unreliable, particularly with certain types of aggregates. The CPT is considered as a more reliable test; however, the duration of this test method renders it impractical for routine usage in the industry to screen deleterious materials or inefficient ASR mitigation measures. This research presents a new test method-Miniature Concrete Prism …
Development Of An Environmental And Operational Impact Assessment Framework For Connected Vehicle Technology Supported Alternative Fuel Vehicles, Parth Bhavsar
All Dissertations
The efforts of US automobile manufacturers to introduce Alternative Fuel Vehicles (AFVs) to the automobile market, and reduce fossil fuel dependency are changing the energy consumption scenario of the US transportation network. The evolution in Connected Vehicle Technology (CVT) is further accelerating the vision of a safe and sustainable transportation system for the 21st century. However, before such system can be an actuality to meet future US transporation needs, a new generation of traffic micro-simulation tools must be developed to evaluate connected vehicle technologies that can support AFVs in the transportation network.
This research focused on developing an evaluation framework …
Development And Evaluation Of An Intelligent Transportation Systems-Based Architecture For Electric Vehicles, Zhiyun Li
All Dissertations
The rapid development of increasingly complex in-vehicle electronics now offers an unprecedented level of convenience and versatility as well as accelerates the demand for connected driving experience, which can only be achieved in a comprehensive Intelligent Transportation Systems (ITS) technology based architecture. While a number of charging and range related issues continue to impede the Electric Vehicle (EV) market growth, integrating ITS technologies with EVs has the potential to address the problems and facilitate EV operations. This dissertation presents an ITS based vehicle infrastructure communication architecture in which abundant information can be exchanged in real time through vehicle-to-vehicle and vehicle-to- …
A Methodology For Designing Pervious Bicycle Lanes For Stormwater Management, Donald West Iii
A Methodology For Designing Pervious Bicycle Lanes For Stormwater Management, Donald West Iii
All Theses
Bicycles have proven to be an efficient and reliable form of transportation in urban settings. Therefore, the addition of bicycle lanes into the transportation network could significantly impact and improve the sustainability of our infrastructure by reducing greenhouse emissions and improving the health of individuals who cycle on a regular basis. Pervious pavements are an approved (LID) strategy that could potentially be used to construct these new facilities thereby reducing the quantity of stormwater runoff and improving the water quality. Practicing engineers need both a design aid and research supported methods for designing these improvements before they can be fully …
Noise-Insensitive Prognostic Evaluation Of Historic Masonry Structures, Ashley Haydock
Noise-Insensitive Prognostic Evaluation Of Historic Masonry Structures, Ashley Haydock
All Theses
In recent years, a significant amount of research has been directed towards the development of prognostic methodologies to forecast the future health state of an engineering system assisting condition based maintenance. These prognostic methods, having furthered the maintenance practices for mechanical systems, have yet to be applied to historic masonry structures, many of which stand in an aged and degraded state. Implementation of prognostic methodologies to historic masonry structures can advance the planning of successful conservation and restoration efforts, ultimately prolonging the life of these heritage structures. This thesis presents a review of prognostic concepts and techniques available in the …
Quantifying Annual Bridge Cost By Overweight Trucks In South Carolina, Linbo Chen
Quantifying Annual Bridge Cost By Overweight Trucks In South Carolina, Linbo Chen
All Theses
With the economic development in recent decades, more trucks including overweight trucks are operating on the highways. As a result, many bridges are expected to carry more loads than they did in previous years. The impact of overweight trucks on existing bridges has been an urgent concern for the South Carolina Department of Transportation (SCDOT). There is a pressing need to quantify the annual bridge cost in South Carolina caused by trucks and, in particular, overweight trucks so that the SCDOT and the state legislators can determine the appropriate fee structure for operating overweight trucks. This research focused on quantifying …
The Hydraulic Performance Of Perforated Pipe Under-Drains Surrounded By Loose Aggregate, Patrick Murphy
The Hydraulic Performance Of Perforated Pipe Under-Drains Surrounded By Loose Aggregate, Patrick Murphy
All Theses
Perforated pipes are commonly used in the construction industry for subsurface drains. These subsurface drains are installed to intercept and convey infiltrated runoff or groundwater. One common application of perforated pipe is to provide an under-drain for an infiltration trench or porous pavement best management practice (BMP). Perforated pipe is installed into a trench on a bed of aggregate ranging from 0 to 28 cm thick and, depending on the design objective, is laid flat or on a slope. However, the actual hydraulic performance of these pipes, i.e. the stage storage relationship, is poorly understood. The resulting flow is quite …
Numerical Study Of The Structural Performance Of Large Panelized All-Wood Roof Diaphragms, Sami Pant
Numerical Study Of The Structural Performance Of Large Panelized All-Wood Roof Diaphragms, Sami Pant
All Theses
The use of flexible roof diaphragms is very common in the United States, both for multi-family residential buildings and large-scale commercial buildings. Due to its simplicity, the traditional diaphragm design method is commonly used in diaphragm design, in particular for the design of diaphragms with relatively small dimensions. The traditional diaphragm design method assumes the axial forces developed in framing members under in-plane loading carried only by the perimeter chords. The traditional diaphragm design method has always been thought to be a conservative design method, especially when applied to large diaphragms. In recent years, the engineering community began to question …
College Level Residential Building Code Education: Current Status And Best Practice, Earl Shealy
College Level Residential Building Code Education: Current Status And Best Practice, Earl Shealy
All Theses
Community destruction and loss of life due to residential building code (RBC) violations still occur too frequently. Increasing RBC enforcement is often not possible due to lack of funds and resources. Teaching RBC to college-level construction students is another way to encourage greater code compliance and enhanced community resilience. This research assesses the current status of RBC education in accredited construction programs, identifies academic and industry perspectives of RBC education, and constructs 'best practice' RBC teaching strategies.
A mix method, exploratory approach including three distinct phases explains the current phenomenon - RBC education emphasis within university curriculums. My research found …
Vehicle-Infrastructure Integration Enabled Plug-In Hybrid Electric Vehicles For Energy Management, Yiming He
Vehicle-Infrastructure Integration Enabled Plug-In Hybrid Electric Vehicles For Energy Management, Yiming He
All Dissertations
The U.S. federal government is seeking useful applications of Vehicle-Infrastructure Integration (VII) to encourage a greener and more efficient transportation system; Plug-in Hybrid Electric Vehicles (PHEVs) are considered as one of the most promising automotive technologies for such an application. In this study, the author demonstrates a strategy to improve PHEV energy efficiency via the use of VII. This dissertation, which is composed of three published peer-reviewed journal articles, demonstrates the efficacies of the PHEV-VII system as regards to both the energy use and environmental impact under different scenarios.
The first article demonstrates the capabilities of and benefits achievable for …
Incorporating Natural Hazard Resistance Into The Life Cycle Assessment Framework, Jeffery Plumblee
Incorporating Natural Hazard Resistance Into The Life Cycle Assessment Framework, Jeffery Plumblee
All Dissertations
Hazard resistant building materials are not adequately represented by current LCA approaches, which do not account for environmental benefits of the avoided losses (e.g. avoided waste, avoided materials for repairs) promised by hazard resistant materials. The goal of this study was to encourage a more complete understanding of materials' environmental impacts by developing a framework to include hazard related damages in LCA.
Catastrophe modeling is a well-developed tool used by the insurance industry to assess the probability of hazard and quantify related impacts. These models were studied to identify required input data as well as the format of output results. …
An Error Quantification Methodology For Hurricane Storm Surge Simulations, Bin Pei
An Error Quantification Methodology For Hurricane Storm Surge Simulations, Bin Pei
All Theses
This thesis describes the development of a procedure to quantify errors in hurricane storm surge simulations using a decoupled wind-surge model. The state-of-the-art storm surge simulation program, ADCIRC (Advanced Circulation), and the Georgiou's wind field model were used to simulate the storm surge heights associated with 169 historical hurricanes from 1922 to 2011 along the coast of North Carolina, South Carolina and Georgia. The storm surge modeling errors were quantified by comparing the measured to the simulated annual maximum surge heights at nine water level observation stations maintained by the Center for Operational Oceanographic Products and Services (CO-OPS). The simulated …
Analysis Of Energy Savings Through The Use Of Displacement Ventilation In Domestic Buildings, Patrick Daffin
Analysis Of Energy Savings Through The Use Of Displacement Ventilation In Domestic Buildings, Patrick Daffin
All Theses
This study investigates the conditions under which it might be possible to implement a displacement ventilation system in a residential building. An experimental study of the impact on a mechanical air conditioning system of the vertical location of the inlet and outlet vents was performed. The four ventilation configurations of low inlet high outlet, low inlet low outlet, high inlet high outlet, and high inlet low outlet were compared. These four configurations were compared under 13 different heat load scenarios in a full scale instrumented model room. It was found that, for higher heat loads, the low inlet high outlet …
In Situ Ground Freezing And Sampling Of A Pleistocene Sand Deposit In The South Carolina Coastal Plain, Michael Esposito Iii
In Situ Ground Freezing And Sampling Of A Pleistocene Sand Deposit In The South Carolina Coastal Plain, Michael Esposito Iii
All Theses
The procedures used to freeze and sample a Pleistocene sand deposit at the Coastal Research and Education Center near Charleston, South Carolina to preserve and study the effects of diagenesis are presented in this thesis. An initial feasibility study was conducted to target a layer of clean sand at the CREC site with little to no frost heave potential. To freeze the sand deposit, a ground freezing system with a central freezing pipe was installed to target a column of sand 1-m in radius and 2.3-m long. Liquid nitrogen was continuously supplied to the large steel freezing pipe, which was …
An Examination Of The Influence Of Cement Paste On Pervious Concrete Mixtures, Donald Singer
An Examination Of The Influence Of Cement Paste On Pervious Concrete Mixtures, Donald Singer
All Theses
Pervious concrete has many environmental benefits, but with these benefits come additional hurdles unseen in conventional concrete. The main focus of pervious concrete is the maintenance of the interconnected pore structure, leading to porosity values between 15 and 25%, while still developing adequate strength. Due to these inherent properties of pervious concrete, development of a systematic optimum mix design method is challenging. Currently, there is a need to develop a systematic optimum mix design for pervious concrete, but it has yet come to fruition. This research focuses on the influence of cement paste on the performance of pervious concrete, and …
3d Reconstruction For Post-Disaster Analysis Of Civil Infrastructure, Joshua Caron
3d Reconstruction For Post-Disaster Analysis Of Civil Infrastructure, Joshua Caron
All Theses
Following a natural disaster, there is a need to rapidly assess the safety of civil infrastructure. This job is typically undertaken by local governments with the help of volunteer civil engineers with structural expertise, as well as organizations such as Cal EMA and ASCE. However, the inspection process is labor-intensive and a bit tedious, and results are prone to error as they tend to rely on the individual expertise of the inspectors. 3D reconstruction stands to become a useful tool in the safety evaluation process, as well as providing valuable opportunities for forensic engineering. This research explores the application of …
Evaluation Of Rubber Modified Porous Asphalt Mixtures, Kimberly Lyons
Evaluation Of Rubber Modified Porous Asphalt Mixtures, Kimberly Lyons
All Theses
A porous pavement is a type of sustainable pavement that allows stormwater to infiltrate through the pavement into the natural soil bed. Rubber modified binder is the combination of regular asphalt binder mixed with ground crumb rubber, which is derived from used rubber tires by shredding or grinding the tires into small fragments. This research investigated the effects of rubber modified binder on the performance properties of porous asphalt mixtures, which include draindown, porosity, permeability, abrasion resistance, moisture susceptibility, and rutting resistance.
The addition of cellulose fibers has been used to increase the optimum binder content of porous asphalt mix …