Civil and Environmental Engineering Commons^™

Analysis Of The Pile Load Tests At The Us 68/Ky 80 Bridge Over Kentucky Lake, Edward Lawson

Theses and Dissertations--Civil Engineering

Large diameter piles are widely used as foundations to support buildings, bridges, and other structures. As a result, it is critical for the field to have an optimized approach for quality control and efficiency purposes to measure the suggested number of load tests and the required measured capacities driven piles. In this thesis, an analysis of a load test program designed for proposed bridge replacements at Kentucky Lake is performed. It includes a detailed site exploration study with in-situ and laboratory testing. The pile load test program included monitoring of a steel H-pile and steel open ended pipe pile during …

Investigation Of Atmospheric Effects On Vapor Intrusion Processes Using Modelling Approaches, Elham Shirazi

Theses and Dissertations--Civil Engineering

Most people in the United States (US) spend considerable amount of time indoors—about 90% of their time as compared to outdoors, which makes the US population vulnerable to adverse health effects of indoor air contaminants. Volatile organic compound (VOC) concentrations are well-known to be higher in indoor air than outdoor air. One source of VOC concentrations in indoor air that has gained considerable attention in public health and environmental regulatory communities is vapor intrusion. Vapor intrusion is the process by which subsurface vapors enter indoor spaces from contaminated soil and groundwater. It has been documented to cause indoor air contamination …

Applied Fluid Mechanics Lab Manual, Habib Ahmari, Shah Md Imran Kabir

Civil Engineering Faculty Publications - Archive

This lab manual provides students with the theory, practical applications, objectives, and laboratory procedure of ten experiments. The manual also includes educational videos showing how student should run each experiment and a workbook for organizing data collected in the lab and preparing result tables and charts.

E-Construction Technologies For Efficient Highway Construction Inspections, Dhaivat Patel

Theses and Dissertations--Civil Engineering

Over recent years, organizations such as the Federal Highway Administration and Departments of Transportation across the United States have showed interest in automating highway construction processes. The addition of e-Construction and other advanced technologies can significantly improve the efficiency and safety of highway paving operations, specifically paving inspections. Activities such as collecting load tickets, tracking pavement lay-down temperatures, and monitoring roller movement are antiquated practices that DOT inspectors perform during paving operations. E-Ticketing, Paver Mounted Thermal Profiling, and Intelligent Compaction were proposed to automate paving inspections and were recently tested in two resurfacing pilot projects in the state of Kentucky. …

Basic Turbo Roundabouts As An Alternative To Conventional Double-Lane Roundabouts: Operational Performance Evaluation, Zuhair Elhassy

Electronic Theses and Dissertations

Conventional roundabouts have been prevalent worldwide since the emergence of modern roundabouts in 1966. An innovative design of multilane roundabouts known as turbo roundabouts, however, has been recently introduced as an alternative to conventional multilane roundabouts. Due to several reasons, there has been no general consensus on the operational performance of turbo roundabouts throughout the world. Nationwide, turbo roundabouts have yet to be part of roadway systems, but there is an ongoing project expected to be finished in early 2020. Therefore, this dissertation aims to evaluate the operational performance of a widespread variant of turbo roundabouts, namely basic turbo roundabouts, …

Escherichia Coli Removal From Stormwater Using Steel Chips Filter, Peng Dai

Electronic Theses and Dissertations

Media filtration has received increasing attention as an effective technology that can facilitate the removal of particles and dissolved pollutions in the stormwater. However, most traditional media filtration systems are generally ineffective in removing bacteria, causing pollution of groundwater and receiving surface water. In this study, recycled steel chips were evaluated as low-cost filter materials for bacterial removal from stormwater. Laboratory column experiments were conducted to evaluate the impact of steel chips particle size, flow rate, initial E.coli concentration, pH, natural organic matter (NOM), steady and intermittent flow on E.coli removal. The results showed that E.coli removal decreased from 99.4% …

Repairable Moment-Resisting Steel Buildings, Heath William Pederson

Electronic Theses and Dissertations

Current seismic design codes ensure life safety for buildings, but structural members may significantly yield or even fail under strong earthquakes. A new design approach is to implement connections that localize the yielding and failure to fuses. A more sophisticated approach is to be able to replace the fuses after the event. The present study was carried out to develop repairable moment-resisting (MR) connections for steel buildings and to investigate their seismic performance through nonlinear finite element analyses (FEA). Two details were proposed using buckling restrained fuses (BRFs) and buckling restrained reinforcement (BRR). Test data was collected from the literature …

ผลของปริมาณบอแรกซ์และเถ้าแกลบต่อสมบัติของจีโอโพลิเมอร์มอร์ต้าร์จากเถ้าลอยแคลเซียมสูง, กิตติ์ จันทร์ประสิทธิ์

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้มีวัตถุประสงค์หลักในการพัฒนาสมบัติของวัสดุจีโอโพลิเมอร์ที่ผสมบอแรกซ์ที่เรียกว่า “บอโรอลูมิโนซิลิเกต (BASG)” ซึ่งเป็นหนึ่งในวัสดุที่เป็นมิตรต่อสิ่งแวดล้อม ส่วนเชื่อมประสานของจีโอโพลิเมอร์ทำจากเถ้าลอยแคลเซียมสูง โซเดียมไฮดรอกไซด์ (NH) โซเดียมซิลิเกต (NS) และบอแรกซ์ ทุกส่วนผสมใช้สัดส่วนเถ้าลอยต่อทรายคงที่เท่ากับ 1:2.75 โดยน้ำหนัก ใช้อัตราส่วน NS/NH โดยน้ำหนักเท่ากับ 1:1, 0.75:1 และ 0.5:1 ใช้บอแรกซ์แทนที่ NS ในปริมาณ 0%, 10%, 20% และ 30% โดยน้ำหนัก และศึกษาการใช้เถ้าแกลบ (RHA) ในการพัฒนากำลังรับแรงและความทึบน้ำของจีโอโพลิเมอร์มอร์ต้าร์ โดยใช้ RHA ในปริมาณ 0%, 3.6%, 4.8% และ 6.0% โดยน้ำหนักของเถ้าลอย จากการทดสอบพบว่าการแทนที่ NS ด้วยบอแรกซ์ส่งผลให้ความสามารถทำงานได้และความแข็งแรงของมอร์ต้าร์ลดลง เมื่อเปรียบเทียบกับส่วนผสมควบคุมที่ไม่ผสม RHA พบว่า BASG มอร์ต้าร์ที่ผสม RHA มีกำลังอัด กำลังดัด และความทึบน้ำที่ดีกว่า ผลการทดสอบโครงสร้างระดับจุลภาคบ่งชี้ว่าการใส่ RHA ช่วยเพิ่มสัดส่วน Si/Al ของจีโอโพลิเมอร์เจล โดยกำลังรับแรงอัดของ BASG มอร์ต้าร์ที่ผสม RHA มีค่าสูงสุดเท่ากับ 58.6 MPa

พฤติกรรมการรับแรงดัดของคานคอนกรีตผสมเส้นใยเหล็กภายใต้ภาวะการกัดกร่อน, อาณสิทธิ์ การินทอง

Chulalongkorn University Theses and Dissertations (Chula ETD)

ตั้งแต่อดีตจนถึงปัจจุบัน โครงสร้างคอนกรีตเสริมเหล็กเป็นโครงสร้างที่นิยมใช้กันอย่างแพร่หลาย แต่เนื่องจากเหล็กเสริมมีความทนทานต่อการกัดกร่อนที่ต่ำ ปัญหาการกัดกร่อนภายในโครงสร้างเป็นปัญหาสำคัญที่ส่งผลกระทบต่อความสามารถในการรับแรงของโครงสร้างที่ลดลงเนื่องจากสูญเสียปริมาณเหล็กเสริมไป ซึ่งอาจทำให้เกิดอันตรายต่อผู้ใช้งานโครงสร้างได้ ดังนั้นจึงจำเป็นต้องมีการพัฒนาโครงสร้างคอนกรีตเสริมเหล็กให้สามารถรับกำลังภายใต้สภาวะการกัดกร่อนได้ดีขึ้น งานวิจัยนี้จึงมีวัตถุประสงค์เพื่อศึกษาพฤติกรรมการดัดของคานคอนกรีตเสริมเหล็กผสมเส้นใยเหล็กภายใต้ภาวะการกัดกร่อน ด้วยการศึกษาอิทธิพลของปริมาณเส้นใยที่ใช้ต่อความเสียหายที่เกิดขึ้นเนื่องจากการกัดกร่อน และอิทธิพลของปริมาณเส้นใยที่ใช้ต่อพฤติกรรมของคานที่สภาวะการกัดกร่อน ตัวแปรที่ใช้ในการศึกษาคือ ระดับการกัดกร่อน (ร้อยละ 0, 2 และ 5) และปริมาณเส้นใยเหล็กที่ใช้ผสม (ร้อยละ 0, 0.5, 1.0 และ 1.5 โดยปริมาตรคอนกรีต) โดยศึกษาจากตัวอย่างคานทั้งหมด 12 ตัวอย่าง ผลการทดสอบพบว่า ปริมาณการใช้เส้นใยที่ในปริมาณที่เหมาะสมทำให้ความกว้างรอยแตกร้าวเนื่องจากการกัดกร่อนลดลงอย่างมีนัยสำคัญ โดยการผสมเส้นใยร้อยละ 1.0 ช่วยลดความกว้างรอยแตกร้าวลงได้ถึงร้อยละ 63.55 ที่การกัดกร่อนร้อยละ 2 และลดลงร้อยละ 27.96 ที่การกัดกร่อนร้อยละ 5 และการผสมเส้นใยช่วยทดแทนกำลังรับแรงดัดที่สูญเสียเนื่องจากการกัดกร่อนได้ โดยการผสมเส้นใยร้อยละ 0.5 สามารถทดแทนกำลังที่สูญเสียไปร้อยละ 101.3 ที่การกัดกร่อนร้อยละ 2 และ การผสมเส้นใยร้อยละ 1.0 สามารถทดแทนกำลังที่สูญเสียไปร้อยละ 101.2 ที่การกัดกร่อนร้อยละ 5 อีกทั้งเส้นใยเหล็กยังช่วยเพิ่มประสิทธิภาพในการถ่ายแรงไปยังเหล็กเสริมรับแรงดึงและช่วยให้พฤติกรรมการรับแรงดัดของคานคอนกรีตเสริมเหล็กไม่เปลี่ยนแปลงไปภายใต้ภาวะการกัดกร่อน

Balancing Mass Transit Ridership Through Land Use Development, Achara Limmonthol

Chulalongkorn University Theses and Dissertations (Chula ETD)

The utmost utility of the transit system can be supported by the balance of ridership. It is not only gaining more operational benefits but also enhancing the efficiency of the system as a whole. Transit Oriented Development (TOD) is defined as an integration between land use and transportation, which focuses on the station areas. Land use characteristics are the essential factors that affect trip generation and trip attraction. Some types of land use generate trips mainly during peak hours. Meanwhile, some other types generate trips during off-peak hours. This dissertation therefore focuses on the balancing mass transit ridership through land …

A Business Success Evaluation Of Market Entry Mode Types In Myanmar Construction, Naw Ruth Po Gay

Chulalongkorn University Theses and Dissertations (Chula ETD)

The optimal entry mode decision and knowing the critical success factors are important for successful international market expansion. However, there are not many studies for developing Asian countries, such as Myanmar. Investors need to know what factors influence entry mode decision and business success. Therefore, the objectives of this study are 1) to identify the factors that influence entry modes decision, 2) to identify the critical success factors of entry modes for business, 3) to identify the significant factors that affect business success. The questionnaire survey using a five-point Likert scale was developed and distributed in Yangon, the commercial city …

Synthesis Of Fault Traces In Se Louisiana Relative To Infrastructure, David Culpepper, Elizabeth Chinn Mcdade, Nancye Dawers, Mark Kulp, Rui Zhang

Data

Corresponding data set for Tran-SET Project No. 17GTLSU12. Abstract of the final report is stated below for reference:

"Geological faulting has been implicated as a contributor to subsidence, coastal land-loss and submergence of marshlands in southern Louisiana. This report reviews whether fault motion, either by slow creep or more sudden slip, can cause deformation of engineered structures resulting in increased infrastructure maintenance and repair costs. The impact of surface, or near-surface, geologic faulting on critical infrastructure is insufficiently documented in southeastern Louisiana, but the state has a vast amount of energy-sector subsurface data that to date has been under-utilized for …

Field And Numerical Study For Deteriorating Precast Double-Tee Girder Bridges, Brian Kidd

Electronic Theses and Dissertations

Two deteriorating DT bridges in South Dakota, both over 30-years old, were field tested with a static and dynamic load. From the recorded strain values, the liveload distribution factors (LLDFs) and dynamic load allowance (IM) factors were calculated. The AASHTO LRFD and AASHTO Standard Specifications were compared with the field LLDFs and IMs. It was determined that the AASHTO LRFD Specifications were conservative for deteriorating DT girder bridges, with two exceptions. The AASHTO Standard codified LLDFs were significantly higher than the field LLDFs in all cases. The AASHTO LRFD and AASHTO Standard specifications were conservative when calculating the IM factors …

Ua66/9/2 Ogden College Of Science & Engineering Engineering Publications, Wku Archives

WKU Archives Collection Inventories

Publications created by and about the Engineering department.

Ua66/9/3 Ogden College Of Science & Engineering Engineering Student Organizations, Wku Archives

WKU Archives Collection Inventories

Records created by and about Engineering department student organizations.

Training Effectiveness Analysis Of Osha Silica And Excavation Safety Standards For Construction, Bedel Desruisseaux

Wayne State University Theses

ABSTRACT

TRAINING EFFECTIVENESS ANALYSIS OF

OSHA SILICA AND EXCAVATION SAFETY STANDARDS

FOR CONSTRUCTION

by

BEDEL DESRUISSEAUX

May 2019

Advisor: Dr Mumtaz Usmen

Major: Civil Engineering

Degree: Master of Science

As construction safety and health standards evolve due to changing industry practices and stakeholder expectations, and the mandates get stronger on compliance with these standards, the need for training programs become more pronounced. The proposed paper covers the training material development and program delivery and evaluation efforts associated with two OSHA standards applicable to construction; one on Respirable Crystalline Silica (29 CFR 1926.1153) and other on Excavation and Trenching (29 CFR …

Economic Appraisal Of Hybrid Solar-Biomass Thermophotovoltaic Power Generation, C. M. Iftekhar Hussain Cmih, Aidan Duffy, Brian Norton

Conference Papers

The techno-economic parameters that influence the commercial deployment of hybrid thermophotovoltaic (TPV) solar power generation are determined using annual system simulations. It has been found that a TPV cell price of E5/cm2 or less together with a TPV operating temperature under 800°C is required for a hybrid solar–biomass TPV power plant to be economically competitive with the state-of-the-art hybrid solar–biomass Rankine cycle power plants.

Adapting The Surveying Curriculum To New Dimensions Of The Profession, Fahria Masum, Reinfried Mansberger, Audrey Martin, Gerhard Navratil, Anthony Mushinge

Articles

Today the surveying profession is very different from what it was twenty years ago. Recent technological innovations, globalization, and global land-related challenges have allowed a wide range of advances in the surveying profession. The vision is to promote surveying practices that can enhance the quality of services in a variety of tracks in the land profession. According to the new adjacent professional areas and the needs of the labor market, academic courses for surveyors have to be adapted to meet the broader scope of the surveying profession and to supply highly qualified land professionals. This paper outlines the new challenges …

Assessing Impact And Blast Resilience Of Polymer Coated Cementitious Materials, Murtaza Nalwala, Gabriel Nsengiyumva, Yong-Rak Kim

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

RESEARCH MOTIVATION: The bridge piers are highly vulnerable to the impact and blast loads. The position in which they are constructed makes it difficult to install protective devices around them. By the current AASHTO standard, it is possible to under-design bridge piers for commercial vehicle impacts and other events such as blast.

OBJECTIVE: To improve impact and blast resilience of bridge piers using polymeric coatings.

CONCLUSION • Polymer coating of Portland cement concrete can be achieved with a good bonding. • The polymeric coating seem to improve impact resilience of Portland cement concrete by increasing absorbed impact energy (i.e., area …

Pervious Lightweight Concrete And Engineered Sand Filter, Sarah Puchner

Summer Community of Scholars Posters (RCEU and HCR Combined Programs)

No abstract provided.

Validation Of The Highway Capacity Manual Urban Street Travel Time Reliability Methodology Using Empirical Data, Ernest Tufuor, Laurence Rilett

Mid-America Transportation Center: Final Reports and Technical Briefs

The 6th edition of the Highway Capacity Manual (HCM-6) includes the concept of travel time reliability (TTR), which attempts to determine the distribution of average trip travel times over an extended period. TTR is an inherent part of travelers’ route choice decisions and is used by traffic managers to better quantify operations rather than simply using average travel times. The focus of this paper is on the HCM-6 urban street TTR methodology contained in Chapter 17. The approach uses historical data (e.g., weather and volume fluctuations) and simple empirical data (e.g., 1-day volume count) to provide the user with average …

Use Of Wicking Geotextile To Dehydrate Road Embankments, Chuang Lin

Doctoral Dissertations

“Excess water within a pavement structure is the major cause of pavement deteriorations. A roadway is often constructed with soils compacted at the optimum water contents to achieve the best performance. After construction, the soil water content variation is controlled by the ambient environment. The base course aggregate is very sensitive to water content variations. Unfortunately, conventional drainage system can only drain gravity water, but not capillary water, and it cannot work under unsaturated conditions. Consequently, no matter how well the road is constructed, the water content is expected to increase with time and the excess water will inevitably accelerate …

Dynamic Impact Induced By Tornadoes Through Simulations Based On Two-Way Wind-Structure Interactions, Tiantian Li

Doctoral Dissertations

"Tornadoes have become a significant cause of property damage, injuries and life losses. Investigations of tornadoes indicate that most fatalities were caused by building failure. For example, in the Joplin, MO tornado of 22 May 2011, 161 people were killed, and 84% fatalities were related to building failure. Therefore, it is imperative to develop science-based tornado-resistant building codes, in order to provide a better level of occupant protection from tornadoes and to minimize the tornado-induced damage. This requires in-depth understanding of the wind characteristics of tornadoes and their wind effects on civil structures, based on which design tornadic wind loading …

Changes In Fresh Properties Of Flowable Concrete Induced By Pumping And Composition Of The Lubrication Layer, Alexis Salinas

Masters Theses

"Pumping is an easy method to move concrete while keeping stability. It is worldwide accepted as one of the principal methods for concrete placement, as it accelerates construction. Typically, concrete acceptance in terms of fresh quantitative empirical properties (i.e. slump/slump flow and air content) are performed prior to the pumping process. However, empirical measurements have the drawback that they only measure 1 point. Rheology is better tool to evaluate the behavior of concrete. Pumping is a process that induces considerable shearing in the concrete that can impact its rheological properties. Therefore, the magnitude of these changes in fresh properties depends …

Perceptions Of Vulnerability To Flooding, Hurricanes, And Climate Change On Grand Isle, Louisiana’S Only Inhabited Barrier Island, Lauren Miller

Graduate Student Theses, Dissertations, & Professional Papers

This study used in-depth interviews of permanent residents on Grand Isle, Louisiana, a remote barrier island, to better understand their perceptions of structural flood measures, non-structural responses to flooding and hurricanes, and perceptions of vulnerability to flooding, hurricanes, and climate change on a remote barrier island-Grand Isle, Louisiana. Residents' perceptions regarding the various structural measures implemented by the federal, state, and local government appeared mixed. Non-structural responses to flooding risks implemented at the household, community, state, and federal level continue to strengthen resiliency on Grand Isle. According to interviewees, aspects of environmental, rural, and economic vulnerability on Grand Isle impact …

Airfield Infrastructure Management Using Network-Level Optimization And Stochastic Duration Modeling, Mohamadhossein Noruzoliaee, Bo Zou

Civil Engineering Faculty Publications

This paper proposes a facility-specific modeling approach to plan maintenance and rehabilitation (M&R) activities on a network of airport runway pavement facilities. The objective of the modeling approach is to minimize system M&R cost while recommending M&R activities for each runway pavement facility over a planning horizon. To do so, pavement condition forecast is derived from estimating stochastic duration models which capture the inherent uncertainty and dynamics in pavement deterioration and impacts of exogenous factors. Building on the pavement condition forecast, a network optimization-based M&R planning framework is developed which accounts for the interdependence of M&R activities among facilities as …

Using Online Discussions To Develop The Entrepreneurial Mindset In Environmental Engineering Undergraduates: A Case Study, Lisa B. Bosman, Nathalie Duval-Couetil, Brooke K. Mayer, Patrick J. Mcnamara

Civil and Environmental Engineering Faculty Research and Publications

Entrepreneurship is an important aspect of the U.S. and global economy. As such, developing an entrepreneurial mindset is crucial for both engineering students and practicing engineers. The purpose of this paper is investigate the role of online discussions, as a pedagogical approach, in the development of the entrepreneurial mindset, and explore a variety of approaches to assess student learning outcomes. Online discussions prompts were created for environmental engineering courses using the Kern Engineering Entrepreneurial Network (KEEN) framework. The framework proposes that an entrepreneurial mindset can be fostered in students by promoting curiosity, encouraging connections, and creating value. This paper describes …

Operational Effectiveness Of Connected Vehicle Smartphone Technology On A Signalized Corridor, Festo Mjogolo

UNF Graduate Theses and Dissertations

Over the last decade, extensive research efforts have been placed on performance evaluation and the benefits of innovative CV applications. Findings indicate that CV technology can effectively mitigate the safety, mobility, and environmental challenges experienced on transportation networks. Most of research evaluated CV technology through simulation studies. However, a field study provides a more ideal method of assessing CV technology effectiveness. Therefore, a field study to obtain the actual effectiveness of CV technology was warranted, to validate previous findings, and to add to the body of knowledge surrounding this topic. This thesis presents both a field study and simulation evaluation …

An Analysis Of Hydroacoustic Transmission Loss Associated With Marine Pile Driving, Jonathan Paul Berube

UNF Graduate Theses and Dissertations

There has been a growing concern in recent years about the effects of anthropogenic noise due to marine pile driving on underwater wildlife. Current guidelines for mitigating hydroacoustic effects associated with these events are based upon relatively simple transmission loss formulations. The advantage to these guidelines is that computing transmission loss using their prescribed methods is not labor intensive, but their disadvantage is that they may not take all variables into account. Because of this, it may be possible to improve transmission loss computations. To better-characterize marine pile driving sound transmission loss, a unique in-water instrumentation system was developed. This …

Simulation Exploration Of The Potential Of Connected Vehicles In Mitigating Secondary Crashes, Mike Alvin Soloka

UNF Graduate Theses and Dissertations

Secondary crashes (SCs) on freeways are a major concern for traffic incident management systems. Studies have shown that their occurrence is significant and can lead to deterioration of traffic flow conditions on freeways in addition to injury and fatalities, albeit their magnitudes are relatively low when compared to primary crashes. Due to the limited nature of crash data in analyzing freeway SCs, surrogate measures provide an alternative for safety analysis for freeway analysis using conflict analysis. Connected Vehicles (CVs) have seen compelling technological advancements since the concept was introduced in the 1990s. In recent years, CVs have emerged as a …