The Subject Librarian Newsletter, Engineering And Computer Science, Fall 2017, 2018 University of Central Florida
The Subject Librarian Newsletter, Engineering And Computer Science, Fall 2017, Buenaventura "Ven" Basco
Buenaventura "Ven" Basco
No abstract provided.
In-Situ Mechanical Characterization For Compacted Aggregates, 2018 New Mexico State University
In-Situ Mechanical Characterization For Compacted Aggregates, Douglas Cortes, Paola Bandini
The evaluation of compacted unbound aggregate layers is perhaps the most common undertaking in transportation-related projects. The assessment of compaction compliance in engineered fills, subgrades, subbases, and bases in roadways and railways is central to ensure longevity of ground transportation infrastructure. In many cases, premature failures in roadways that originate in the unbound aggregate layers can be traced back to inadequate compaction. These failures are preventable, provided the problem areas can be identified by a suitable field test during construction. The most widely used method for compaction assessment during construction is the nuclear density gauge (NDG) test. While the device ...
A Comparative Analysis Of Key Elements Of The Strategic Decision-Making Process Across Construction Professional Services Firms: Evidence From The Irish Construction Industry, 2018 Dublin Institute of Technology
A Comparative Analysis Of Key Elements Of The Strategic Decision-Making Process Across Construction Professional Services Firms: Evidence From The Irish Construction Industry, Oluwasegun O. Seriki, Roisin Murphy
The Irish construction industry is experiencing a well-established growth phase following a prolonged recession. While the economic impact has been well documented, there remains less emphasis on discipline-specific studies pertaining to strategy within construction firms in Ireland. Additionally, evidence regarding strategic management within the construction sector is predominantly concentrated on contracting organisations, with less emphasis on highly knowledge-intensive professional service firms (PSFs). As the construction sector in Ireland continues its sustained growth, there have been increased calls within the industry for further collaboration between key stakeholders. However, exploring collaboration within project-centric firms without understanding the individual strategic decision-making processes within ...
The Role Of Digitisation In The Strategic Planning Process Of Irish Quantity Surveying(Qs) Practices, 2018 Dublin Institute of Technology
The Role Of Digitisation In The Strategic Planning Process Of Irish Quantity Surveying(Qs) Practices, Michael Adesi, Roisin Murphy, Dermot Kehily
Digitisation is important to the transformation of many aspects of the construction industry such as strategic planning process in QS practices. Quantity Surveying (QS) practices largely apply digital technologies in construction project delivery, while neglecting the use of digital technologies in the strategic planning process. The aim of this paper is to investigate the role of digitisation in the strategic planning process of QS practices operating in Ireland. The study adopts a quantitative research methodology which is the first phase of an ongoing research project, by administering survey questionnaires to senior management of QS practices in Ireland. The findings of ...
What You Don’T See, 2018 University of Kentucky
What You Don’T See, Brent Sturlaugson
Architecture Faculty Publications
Follow the supply chains of architecture and you’ll find not just product manufacturers but also environmental polluters and elusive networks of financial power and political influence.
Advancing Bridge Technology, Task 10: Statistical Analysis And Modeling Of Us Concrete Highway Bridge Deck Performance -- Internal Final Report, Omar Ghonima, Thomas Schumacher, Avinash Unnikrishnan, Adam Fleischhacker
Civil and Environmental Engineering Faculty Publications and Presentations
Concrete highway bridge deck repairs represent the highest expense associated with bridge maintenance cost. In order to optimize such activities and use the available monies effectively, a solid understanding of the parameters that affect the performance of concrete bridge decks is critical. The National Bridge Inventory (NBI), perhaps the single-most comprehensive source of bridge information, gathers data on more than 600,000 bridges in all fifty states, the District of Columbia, and the Commonwealth of Puerto Rico. Focusing on concrete highway bridge deck performance, this research developed a nationwide database based on NBI data and other critical parameters that were ...
On Thermal Bowing Of Concrete Sandwich Wall Panels With Flexible Shear Connectors, 2018 Utah State University
On Thermal Bowing Of Concrete Sandwich Wall Panels With Flexible Shear Connectors, Fray Pozo
All Graduate Theses and Dissertations
Thermal bowing, often referred as bulging or out-of-plane wall deflection, is a common issue on sandwich panel walls caused by a temperature differential between a building interior temperature and the environment. The stresses caused by temperature changes in concrete members are widely known in the practice of bridge design, but not on sandwich wall panels. For sandwich wall panel applications, it is common to have non-composite panels when the designer expects a high temperature gradient, what yields a less economical design, but reduces the bowing.
This project aimed to validate current assumptions regarding the heat flow in sandwich wall panels ...
Evaluation And Development Of Cpt Based Pile Design In Nebraska Soils, 2018 University of Nebraska - Lincoln
Evaluation And Development Of Cpt Based Pile Design In Nebraska Soils, Alex Silvey
Civil Engineering Theses, Dissertations, and Student Research
Cone penetration testing (CPT) is a well established geotechnical subsurface investigation technique commonly used for site characterization and soil classification. The CPT gives real time end resistance, side friction, and pore pressure readings. Axially loaded piles also share these two resistance mechanisms, suggesting the cone can be considered similar to a miniature pile. This study focused on evaluating eight CPT methods prediction of pile bearing capacity. The Nebraska Department of Roads (NDOR) conducts dynamic load tests (PDA) of driven pile to verify pile capacity for bridge foundations. 91 comparisons of CPT logs and PDA data were evaluated. CPT prediction methods ...
Decision-Making Framework For The Selection Of Sustainable Alternatives For Energy-Retrofits, 2018 University of New Mexico
Decision-Making Framework For The Selection Of Sustainable Alternatives For Energy-Retrofits, Amirhosein Jafari
Civil Engineering ETDs
Buildings are major consumers of energy worldwide. On the other hand, over 60% of the US housing inventory is over 30 years old and a large number of these homes are energy inefficient. Therefore, it is essential to target the existing building stock for energy efficient interventions as a key to substantially reduce the adverse impacts of buildings on the environment and economy.
Building energy retrofitting has emerged as a primary strategy for reducing energy use and carbon emissions in existing buildings. An energy retrofit can be defined as a physical or operational change in a building, its energy-consuming equipment ...
My Catalyst, 2018 Augustana College, Rock Island Illinois
My Catalyst, Gabrielle Gambino Lyon
Celebration of Learning
Over the course of my internship and shadow program with Pepper Lawson Construction and Ziegler Cooper Architects, I was able to explore the various career paths involved in the design, construction, and civil engineering fields. My work on the construction site of a high-rise apartment building located in the heart of Houston, TX allowed me first-hand experience working and learning alongside project engineers, contractors, building developers, and the construction team.
This project was the perfect confluence of my main areas of interest: structural, mechanical, civil, and environmental engineering, as well as architecture. My daily work consisted of on-site walk throughs ...
Hydronic Heated Pavement System Using Precast Concrete Pavement For Airport Applications, 2018 Iowa State University
Hydronic Heated Pavement System Using Precast Concrete Pavement For Airport Applications, Hesham Abdualla, Halil Ceylan, Sunghwan Kim, Peter C. Taylor, Kasthurirangan Gopalakrishnan, Kristen Cetin
Civil, Construction and Environmental Engineering Conference Presentations and Proceedings
The use of deicing chemical has the potential to cause environmental and safety concerns and pavement deterioration. Hydronic heated pavement systems (HHPS) have been widely used to melt or prevent ice and snow accumulation on paved surfaces. HHPS uses heated fluid circulated through pipes embedded in the concrete pavement to warm the surface of the concrete. The objective of this study is to develop a conceptual design framework and construction guidance for large-scale HHPS using precast concrete pavement (PCP) technology to expedite construction work and minimize air travel disruption. The detailed design and 3-D visualization of construction procedures has been ...
Investigating The Heat Generation Efficiency Of Electrically-Conductive Asphalt Mastic Using Infrared Thermal Imaging, Ali Arabzadeh, Halil Ceylan, Sunghwan Kim, Alireza Sassani, Kasthurirangan Gopalakrishnan
Civil, Construction and Environmental Engineering Conference Presentations and Proceedings
One of the emerging technologies for producing sustainable ice-and snow-free pavements is the use of electrically-conductive surface courses, e.g., electrically-conductive asphalt concrete (ECAC) that can melt ice and snow through resistive heating. Modifying the mastic in asphalt concrete with electrically-conductive materials is a promising approach for producing high-quality ECAC. The objective of this study is to evaluate electrical conductivity and heat generation efficiency of electrically-conductive asphalt mastic (ECAM) specimens at a below-freezing temperature—simulating the harsh weather conditions in North America during the wintertime. To this end, asphalt mastic was electrically modified with carbon fiber (CF) at varying volume ...
Abraham, John E., 1844-1925 (Sc 3233), 2018 Western Kentucky University
Abraham, John E., 1844-1925 (Sc 3233), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 3233. Letter, 8 March 1886, of John E. Abraham, Beattyville, Kentucky, to Captain Thomas J. Hardin, Monterey, Kentucky. He discusses timber transactions and meeting with a supplier of stone in connection with a bid to construct dikes on the Ohio River.
Impact Of Pavement Surface Condition On Roadway Departure Crash Risk In Iowa, 2018 Iowa State University
Impact Of Pavement Surface Condition On Roadway Departure Crash Risk In Iowa, Ahmad Alhasan, Inya Nlenanya, Omar G. Smadi, Cameron A. Mackenzie
Industrial and Manufacturing Systems Engineering Publications
Safety performance is a crucial component of highway network performance evaluation. Besides their devastating impact on roadway users, traffic crashes lead to substantial economic losses on both personal and societal levels. Due to the complexity of crash events and the unique conditions in each country and state, empirical local calibration for the correlation between attributes of interest and the safety performance is always recommended. Limited studies have established a procedure to analyze the impact of pavement condition on traffic safety in a risk analysis scheme. This study presents a thorough analysis of some roadway departure crashes which occurred in Iowa ...
Study On Strut And Node Behavior In Strut-And-Tie Modeling, 2018 Florida International University
Study On Strut And Node Behavior In Strut-And-Tie Modeling, Nazanin Rezaei
FIU Electronic Theses and Dissertations
The strut-and-tie method (STM) is a simple and conservative method for designing concrete structures, especially deep beams. This method expresses complicated stress patterns as a simple truss or kinematic model made up of compression elements (struts), tension elements (ties), and the joints between elements (nodes). STM is based on lowerbound plasticity theorem, so using it properly will lead to a conservative design. Although the concepts of STM have been around in concrete design since the late 19th century, STM was first introduced in AASHTO LRFD in 1994 and ACI 318-02 in 2002. ACI 318 defines two different types of struts ...
An Experimental Test Bed For Developing High-Rate Structural Health Monitoring Methods, 2018 University of Dayton Research Institute
An Experimental Test Bed For Developing High-Rate Structural Health Monitoring Methods, Bryan Joyce, Jacob Dodson, Simon Laflamme, Applied Research Associates
Civil, Construction and Environmental Engineering Publications
Complex, high-rate dynamic structures, such as hypersonic air vehicles, space structures, and weapon systems, require structural health monitoring (SHM) methods that can detect and characterize damage or a change in the system’s configuration on the order of microseconds. While high-rate SHM methods are an area of current research, there are no benchmark experiments for validating these algorithms. This paper outlines the design of an experimental test bed with user-selectable parameters that can change rapidly during the system’s response to external forces. The test bed consists of a cantilever beam with electronically detachable added masses and roller constrains that ...
Carbon Sequestering Bio Concrete As A Solution To Growing Atmospheric Concentrations Of Co2, 2018 California Polytechnic State University, San Luis Obispo
Carbon Sequestering Bio Concrete As A Solution To Growing Atmospheric Concentrations Of Co2, Connor Cech, Jackson Walker
High levels of anthropogenic carbon dioxide (CO2) emissions into the atmosphere are propelling climate change, which has been proven to be highly detrimental to the planet. Cement production for the construction industry is a leading cause of these harmful carbon emissions. This project introduces a potential solution to this issue in the form of a new biological concrete that is treated with carbon sequestering bacteria of the Bacillus family to remove CO2 from the atmosphere. The consolidated research presented in this project will explain the biology behind this process, and how it can be implemented in construction to ...
Advancing Concrete Strength Prediction Using Non-Destructive Testing: Development And Verification Of A Generalizable Model, 2018 Cleveland State University
Advancing Concrete Strength Prediction Using Non-Destructive Testing: Development And Verification Of A Generalizable Model, Kamran Amini, Mehdi Jalalpour, Norbert Delatte
Accurate prediction of concrete compressive strength is imperative for investigating the in-situ concrete quality. To avoid destructive testing, developing reliable predictive models for concrete compressive strength using nondestructive tests (NDTs) is an active area of research. However, many of the developed models are dependent on calibration and/or concrete past history (e.g. mixture proportion, curing history, concrete mechanical properties, etc.), which reduces their utility for in-situ predictions.
This paper develops predictive models for concrete compressive strength that are independent of concrete past history. To this end, ultrasonic pulse velocity (UPV) and rebound hammer (RH) tests were performed on 84 ...
Impacts Of Internal Curing On The Performance Of Concrete Materials In The Laboratory And The Field, 2018 Iowa State University
Impacts Of Internal Curing On The Performance Of Concrete Materials In The Laboratory And The Field, Payam Vosoughi, Peter Taylor, Halil Ceylan
Internal curing is a technique to prolong cement hydration by providing internal water reservoirs in a concrete mixture. These reservoirs do not affect the initial water-to-cementitious materials (w/cm) ratio, but do provide water for curing throughout the thickness of the element. Benefits of this approach include improved mechanical properties as well as reduced risk of moisture gradients, thus reducing the potential for warping. The aim of this work was to assess whether joint spacings could be increased in slabs containing lightweight fine aggregate (LWFA) as a source of internal curing.
Lifecycle Cost Analysis Of Internally Cured Jointed Plain Concrete Pavement, 2018 Iowa State University
Lifecycle Cost Analysis Of Internally Cured Jointed Plain Concrete Pavement, Payam Vosoughi, Steven Tritsch, Halil Ceylan, Peter C. Taylor
Internal curing is a technique that has been developed to prolong cement hydration by providing internal water reservoirs in a concrete mixture that do not adversely affect the concrete mixture’s fresh or hardened physical properties. Internal curing grew out of the need for more durable structural concretes that were resistant to shrinkage cracking. This report covers an investigation into the relative costs and benefits of internal curing using a lifecycle cost analysis (LCCA) that compares internally cured (IC) jointed plain concrete pavement to conventionally cured (CC) pavement. This analysis was based on a pavement designed for use in Dubuque ...