Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Louisiana State University (62)
- Universidad de La Salle (54)
- Chulalongkorn University (44)
- Marquette University (30)
- Universitas Indonesia (24)
-
- University of Central Florida (24)
- Boise State University (21)
- University of Arkansas, Fayetteville (21)
- University of Nebraska - Lincoln (21)
- Missouri University of Science and Technology (18)
- Purdue University (18)
- University of South Florida (16)
- Portland State University (15)
- University of Texas at El Paso (15)
- University of South Carolina (14)
- Technological University Dublin (12)
- University of Kentucky (9)
- University of Nevada, Las Vegas (9)
- University of North Florida (9)
- Utah State University (9)
- Florida International University (8)
- University of Texas at Tyler (8)
- University of Wisconsin Milwaukee (8)
- Florida Institute of Technology (7)
- West Virginia University (7)
- California Polytechnic State University, San Luis Obispo (6)
- South Dakota State University (6)
- Cleveland State University (5)
- Michigan Technological University (5)
- Old Dominion University (5)
- Keyword
-
- Concrete (16)
- Civil Engineering (9)
- Engineering (9)
- Thesis; University of North Florida; UNF; Dissertations (9)
- Academic -- UNF -- Master of Science in Civil Engineering; Dissertations (8)
-
- Corrosion (8)
- Plumbing (7)
- Reliability (7)
- Bridge (6)
- Building (6)
- Climate Change (6)
- FRP (6)
- Heating (6)
- Pavement (6)
- Services (6)
- Adsorption (5)
- Climate change (5)
- Engineering, Civil Engineering (5)
- Evaluation (5)
- Groundwater (5)
- Modeling (5)
- Resilience (5)
- Rutting (5)
- Service Life (5)
- Sustainability (5)
- Asphalt (4)
- Cement (4)
- Cemento (4)
- Civil engineering (4)
- Durability (4)
- Publication
-
- Ingeniería Civil (54)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (44)
- Electronic Theses and Dissertations (36)
- Civil and Environmental Engineering Faculty Research and Publications (30)
- Theses and Dissertations (30)
-
- Data (28)
- Makara Journal of Technology (24)
- Civil Engineering Faculty Publications and Presentations (23)
- Publications (23)
- Graduate Theses and Dissertations (17)
- USF Tampa Graduate Theses and Dissertations (16)
- Open Access Theses & Dissertations (15)
- Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research (12)
- Doctoral Dissertations (10)
- Masters Theses (9)
- UNF Graduate Theses and Dissertations (9)
- FIU Electronic Theses and Dissertations (8)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (7)
- LSU Master's Theses (7)
- The Summer Undergraduate Research Fellowship (SURF) Symposium (7)
- Theses and Dissertations--Civil Engineering (7)
- All ECSTATIC Materials (6)
- Building Services Engineering (6)
- Civil and Environmental Engineering Faculty Publications and Presentations (6)
- Department of Civil and Environmental Engineering: Faculty Publications (6)
- Graduate Theses, Dissertations, and Problem Reports (6)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (6)
- Civil Engineering Faculty Publications (5)
- Civil Engineering Theses (5)
- Electronic Thesis and Dissertation Repository (5)
- Publication Type
- File Type
Articles 1 - 30 of 588
Full-Text Articles in Engineering
Laboratory Study On The Strength Behaviour Of Two Laterally Loaded Adobe Walls, Brad D. Weldon, Paola Bandini, Michael J. Mcginnis, Eduardo Dávila, Diego I. Garcia Vera
Laboratory Study On The Strength Behaviour Of Two Laterally Loaded Adobe Walls, Brad D. Weldon, Paola Bandini, Michael J. Mcginnis, Eduardo Dávila, Diego I. Garcia Vera
Civil Engineering Faculty Publications and Presentations
Adobe is a traditional construction technique found in historic and new construction throughout the world, often in earthquake-prone regions. Adobe structures are particularly susceptible to seismic forces due to their substantial mass and low tensile capacity. In addition, adobe is affected negatively by moisture that may penetrate from the ground or through the plaster. This paper describes the preliminary findings of an experimental program to investigate the effect of higher water content in the lower part of the wall on the wall strength behaviour under lateral loading. Lateral load tests were conducted on two quarter-scale adobe walls, one in air-dry …
Laboratory Evaluation Of Recycled Crushed Glass Cullet For Use As An Aggregate In Beach Nourishment And Marsh Creation Projects In Southeastern Louisiana, John C. Wildman
Laboratory Evaluation Of Recycled Crushed Glass Cullet For Use As An Aggregate In Beach Nourishment And Marsh Creation Projects In Southeastern Louisiana, John C. Wildman
University of New Orleans Theses and Dissertations
To combat the rapid degradation of the Louisiana coast, the Louisiana Coastal Protection and Restoration Authority has planned strategic land building initiatives throughout the Louisiana Gulf coast, including beach nourishment and marsh creation projects. It is commonly agreed that the state lacks sufficient renewable sediment resources to maintain the planned CPRA land building program. However, Louisiana, the state that commonly ranks last in state recycling percentage, recycles an estimated 0.6% of the waste glass consumed in the state. Glass is predominantly silica sand. This thesis evaluates laboratory‑determined characteristics of recycled crushed glass cullet to assess its suitability as a renewable …
Effect Of Curing Conditions On Mechanical Properties And Durability Of Concrete, Edgar Lazaro Salas-Borrero
Effect Of Curing Conditions On Mechanical Properties And Durability Of Concrete, Edgar Lazaro Salas-Borrero
UNLV Theses, Dissertations, Professional Papers, and Capstones
This thesis presents the results for three different concrete mix designs with compression strengths of 4500 psi. The experiment was conducted in the Las Vegas area during the summer, from August 16th to October 12th, 2018, where temperatures and relative humidity was recorded daily, three times a day. In total, 135 concrete specimens (4” x 8”) were taken on site and were subjected to five different curing conditions.
For each concrete mix design, three concrete samples (4” x 8”) were taken and submitted for each curing condition, resulting in 45 cylinders for each concrete mix design. The same number of …
Performance-Based Economical Seismic Design Of Multistory Reinforced Concrete Frame Buildings And Reliability Assessment, Chunyu Zhang
Performance-Based Economical Seismic Design Of Multistory Reinforced Concrete Frame Buildings And Reliability Assessment, Chunyu Zhang
UNLV Theses, Dissertations, Professional Papers, and Capstones
As the next generation of seismic design methodology, performance-based seismic design (PBSD) method requires a structure satisfy multiple preselected performance levels under different hazard levels. Optimal PBSD methods provide different strategies to design the numerous variables, including strength, stiffness and ductility of each structural component. The overall goal of this study is to develop a new optimal PBSD method for multi-story RC moment frames. This method is capable of overcoming the deficiencies of existing optimal PBSD methods and can be implemented by the U.S. design practice. The proposed method minimizes construction cost and takes the limit of member plastic rotation …
Surface Resistivity For Concrete Quality Assurance, Stanley Tat
Surface Resistivity For Concrete Quality Assurance, Stanley Tat
UNLV Theses, Dissertations, Professional Papers, and Capstones
The goal of this study was to determine the effectiveness of SRT for concrete quality assurance and to evaluate the relationship between SRT and the three chloride ion ingress methods currently used by various State DOTs. Additionally, the influence of binder type and content, concrete age, and water-to cementitious materials ratio on the experimental results were also examined.
In this study, Type V Portland and three SCMs; namely fly ash, slag, and silica fume were used. Fine and coarse, aggregates were supplied by a local quarry. To evaluate the transport properties of the studied concretes, RMT, RCPT, and ACT were …
Calculation Of Access Charge For High Speed Rail Xpresswest Of Nevada, Sameeksha Sapkota
Calculation Of Access Charge For High Speed Rail Xpresswest Of Nevada, Sameeksha Sapkota
UNLV Theses, Dissertations, Professional Papers, and Capstones
XpressWest is a High Speed Rail (HSR) system that plans to connect Las Vegas with California at Palmdale. It will utilize the railway network of the California High Speed Rail (CAHSR) to connect Las Vegas with California destinations that include Los Angeles and San Francisco. For sharing the railway network of CAHSR, XpressWest will pay certain charge known as an access charge. The access charge is the fee paid by the train operator to the infrastructure owner for the addition of trains in a track. There are several access charge systems in the world. However, there is no study that …
Comparing Beijing's And Tokyo's Population Growths, Ernest M. Oleksy
Comparing Beijing's And Tokyo's Population Growths, Ernest M. Oleksy
The Downtown Review
The growth of the human population has led to the formation of largely populated agglomerations known as megacities. Although megacities can be found on multiple continents, Asia’s collection displays how megacities can develop in their own directions. Japan’s megacity of Tokyo, like other Japanese megacities, has adopted a western approach. China’s Beijing, on the other hand, continues to embrace its eastern roots. These megacities may differ in their ideologies, but they share in experiencing similar phenomena. One of these phenomena is population growth.
An Engineered Fit-For-Purpose Polymer Nanocomposite Seal Repair Material For Wellbores, Moneeb Genedy
An Engineered Fit-For-Purpose Polymer Nanocomposite Seal Repair Material For Wellbores, Moneeb Genedy
Civil Engineering ETDs
Seal integrity of wellbores has become of significant interest due to repeated leakage and spill incidents occurring worldwide that jeopardize both human health and the environment in addition to causing significant economic burden. This is attributed to the fact that wellbores intersecting geographical formations contain potential leakage pathways. The cement-steel and cement-rock formation interfaces are recognized as two critical leakage pathways.
A seal repair material that has good bond strength with both steel and rock formations in addition to the ability to completely fill thin microcracks is needed to restore the seal integrity of wellbores. In this research, engineered polymer …
Treated Versus Untreated Aggregate Bases For Flexible Pavements: A Nationwide Comparitive Study, Hemant Gc, Mena I. Souliman
Treated Versus Untreated Aggregate Bases For Flexible Pavements: A Nationwide Comparitive Study, Hemant Gc, Mena I. Souliman
Civil Engineering Theses
Aggregates are a major part of highway construction and its quality as well as strength affects the overall performance of the pavement structure. The base material near the construction site does not always meet the strength requirement needed for the pavement construction and the hauling of quality aggregate increases the construction costs. For better use of local available materials, stabilizing agents such as lime and asphalt cement have been utilized to increase the strength of crushed aggregate bases. Performance of pavement structures is heavily influenced by the thickness of the structure as well as material properties of each layer. The …
Bridges - Barren County, Kentucky (Sc 3308), Manuscripts & Folklife Archives
Bridges - Barren County, Kentucky (Sc 3308), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 3308. Specifications, including sketches, for the construction of a bridge across Skaggs Creek in Barren County, Kentucky. The detailed specifications as to design, dimensions, materials, and method of construction were prepared by a commission appointed by the Barren County Court. Unable to secure a bid to erect the bridge for the appropriated sum of $1,000, the commission recommended an additional appropriation in order to accept a bid of $1,200.
Meta-Analysis Of Non-Reactive Phosphorus In Water, Wastewater, And Sludge, And Strategies To Convert It For Enhanced Phosphorus Removal And Recovery, Kaushik Venkiteshwaran, Patrick J. Mcnamara, Brooke K. Mayer
Meta-Analysis Of Non-Reactive Phosphorus In Water, Wastewater, And Sludge, And Strategies To Convert It For Enhanced Phosphorus Removal And Recovery, Kaushik Venkiteshwaran, Patrick J. Mcnamara, Brooke K. Mayer
Civil and Environmental Engineering Faculty Research and Publications
Current and future trends indicate that mining of natural phosphorus (P) reserves is occurring faster than natural geologic replenishment. This mobilization has not only led to P supply concerns, but has also polluted many of the world's freshwater bodies and oceans. Recovery and reuse of this nuisance P offers a long-term solution simultaneously addressing mineral P accessibility and P-based pollution. Available physical, chemical, and biological P removal/recovery processes can achieve low total P (TP) concentrations (≤100 μg/L) and some processes can also recover P for direct reuse as fertilizers (e.g., struvite). However, as shown by our meta-analysis of over 20,000 …
Bandy, Richard Lewis (Sc 3305), Manuscripts & Folklife Archives
Bandy, Richard Lewis (Sc 3305), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Small Collection 3305. Letter, 9 November 2018, of Richard L. Bandy, Bowling Green, Kentucky, to Mary Alice Oliver, in response to her article in a local magazine about Massey’s Mill in Warren County, Kentucky. Bandy provides recollections of a water-powered mill located on property owned by his family on Middle Fork Creek at Drake, Kentucky. Includes two photographs of the mill, a map showing its location, and Oliver’s reply to the letter.
Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson
Community-Scale Water Treatment Systems In The Dominican Republic, Jonathan Racey, Annabelle Papai, Elise Fischer, Becca Johnson
Engagement & Service-Learning Summit
Engagement and Service-Learning Summit: Reciprocal and Sustainable Partnerships
Immittance Response On Carboxymethyl Cellulose Blend With Polyvinyl Alcohol- Doped Ammonium Bromide-Based Biopolymer Electrolyte, Norfatihah Mazuki, Yuki Nagao, Ahmad Salihin Samsudin
Immittance Response On Carboxymethyl Cellulose Blend With Polyvinyl Alcohol- Doped Ammonium Bromide-Based Biopolymer Electrolyte, Norfatihah Mazuki, Yuki Nagao, Ahmad Salihin Samsudin
Makara Journal of Technology
The blended carboxymethyl cellulose (CMC) and polyvinyl alcohol (PVA) doped with various compositions of ammonium bromide (NH4Br)-based solid biopolymer electrolytes (SBEs) were prepared by using the casting method. In this present work, CMC/PVA–NH4Br SBE thin film was used to investigate the electrical conductivity via electrical impedance spectroscopy. The maximum conductivity obtained was 3.21 X 10−4 S cm−1 for sample AB20 at ambient temperature (303 K), and this result might be due to the increased number of charge carrier. A dielectric study was conducted to understand the conductivity behavior. The electrical properties have been measured as a function of frequency of …
A 2.3/3.3-Ghz Dual Band Low Noise Amplifier Using Switchable Load Inductor In 0.18-Um Cmos Technology, Taufiq Alif Kurniawan, Hsiao-Chin Chen
A 2.3/3.3-Ghz Dual Band Low Noise Amplifier Using Switchable Load Inductor In 0.18-Um Cmos Technology, Taufiq Alif Kurniawan, Hsiao-Chin Chen
Makara Journal of Technology
In this paper, the dual band low noise amplifier is designed in 0.18-μm CMOS technology. By combining the proposed switchable load inductor for gain controlling and the conventional inductive source degeneration topology, narrow band gain and good impedance matching are achieved at 2.3/3.3-GHz frequency bands. The new mathematical analysis of low noise amplifier design is derived to define the component parameters of the proposed circuits. The proposed low noise amplifier exhibits gain of 17.18 dB and 15.5 dB, and noise figure of 2.67 dB and 2.52 dB at the two frequency bands, respectively.
Automated Compilation Test System For Embedded System, Mohamad Khairi Ishak, Ooi Jun Hwan, Teh Jiashen, Nor Ashidi Mat Isa
Automated Compilation Test System For Embedded System, Mohamad Khairi Ishak, Ooi Jun Hwan, Teh Jiashen, Nor Ashidi Mat Isa
Makara Journal of Technology
Embedded system testing involves testing an integration of software and hardware. It is increasingly difficult to evaluate the functionality of each module within a short time because of the increasing number of tests required. In this paper, a novel stepwise methodology involving the use of an automated compilation test system (ACTS) is proposed, to improve the quality of testing and optimize the testing time using automation. Using the proposed method, the testing coverage can be maximized, while minimizing the manual work and testing time required. This ACTS was used to automate the test code compilation and execution for different hardware …
Ascorbic Acid Degradation In Cut Lemon Packaged Using Oxygen Scavenging Active Film During Storage, Kurniawan Yuniarto, Setyo Purwanto, Bruce Ari Welt, Anang Lastriyanto
Ascorbic Acid Degradation In Cut Lemon Packaged Using Oxygen Scavenging Active Film During Storage, Kurniawan Yuniarto, Setyo Purwanto, Bruce Ari Welt, Anang Lastriyanto
Makara Journal of Technology
Oxygen scavenging active film can be used to prevent diffusion of free oxygen due to the action of permeation mechanism. In this study, biodegradable oxygen scavenging plastic film was designed by incorporating an antioxidant agent into plasticized polylactic acid or PLA-PEG (PPLA). Butylated hydroxytoluene (BHT) was added at different concentrations into the matrix of the PPLA film using a direct casting method to produce oxygen scavenging active film. The antiradical activity of the oxygen scavenging active film was observed, which could be applied for preventing vitamin C degradation in cut lemon during storage. The antiradical activity of the active film …
Transition Metal Dichalcogenide For High-Performance Electrode Of Supercapacitor, Saifful Kamaluddin Muzakir, Ahmad Salihin Samsudin, Bouchta Sahraoui
Transition Metal Dichalcogenide For High-Performance Electrode Of Supercapacitor, Saifful Kamaluddin Muzakir, Ahmad Salihin Samsudin, Bouchta Sahraoui
Makara Journal of Technology
Molybdenum dichalcogenides have been reviewed from the perspectives of bandgap, conductivity, and oxidation states of transition metal. Researchers have concluded that a narrow-bandgap transition metal dichalcogenide with high conductivity could be achieved for the high-performance electrode of a supercapacitor.
Conversion Of Heat Energy From Cooling Water Of Diesel Engine To Electrical Energy Using Thermoelectric Generator, Muhammad Hasan Albana
Conversion Of Heat Energy From Cooling Water Of Diesel Engine To Electrical Energy Using Thermoelectric Generator, Muhammad Hasan Albana
Makara Journal of Technology
This research objective is to convert heat from the radiator fluid of a diesel engine to electrical energy by utilizing a thermoelectric generator (TEG). The TEG consists of 20 semiconductors (TE modules) and is equipped with a heat sink. The research shows that using the TEG, the heat of radiator fluid can be converted to electrical energy, although the electricity generated is small. The maximum electrical voltage generated by the TEG when modules were connected in series was 10 volts. When the TE modules were connected in parallel and series-parallel, the maximum voltages generated were 2.11 and 2.53 volts, respectively. …
The Importance Of Usability Aspect In M-Commerce Application For Satisfaction And Continuance Intention, Yassierli Yassierli, Vinsensius Vinsensius, M. S. Syed Mohamed
The Importance Of Usability Aspect In M-Commerce Application For Satisfaction And Continuance Intention, Yassierli Yassierli, Vinsensius Vinsensius, M. S. Syed Mohamed
Makara Journal of Technology
There has been a rapid growing of m-commerce application in recent years due to the development of mobile communication technology and e-commerce business. However, only about 30% of online users, who conduct online searching, make online purchases. The low conversion rate seems to be correlated with poor usability aspect of most m-commerce applications and poor satisfaction reported by users. Research has reported that satisfaction and continuance intention in using m-commerce applications have relationships with service quality and information quality. In this study, a new model of user satisfaction and continuance intention in the context of mobile application was proposed by …
Activated Carbon Fixed-Bed Adsorber Design For Treating Chromium Hexavalent Wastewater, Tedi Hudaya, Velicia Rachmat
Activated Carbon Fixed-Bed Adsorber Design For Treating Chromium Hexavalent Wastewater, Tedi Hudaya, Velicia Rachmat
Makara Journal of Technology
Pollution caused by industrial wastewater containing heavy metals is a major issue, primarily due to its toxic nature. A cheap yet effective method to deal with such wastewater is activated carbon adsorption. The purpose of this research is to evaluate and design a fixed bed adsorber with granular activated carbon as an adsorbent to process wastewater-containing chromium hexavalent (Cr 6+). Experiments show that the Langmuir isotherm fits the equilibrium data as effectively as the Freundlich isotherm. Activated carbon used in this research is Jacobi 2000® derived from bituminous coal. The lab scale inlet volumetric flow is 100 mL/h with different …
Improving Ductility Of Slender Reinforced Concrete Shear Walls With Frp Sheets And Splay Anchors, Luke M. Ostrom
Improving Ductility Of Slender Reinforced Concrete Shear Walls With Frp Sheets And Splay Anchors, Luke M. Ostrom
Architectural Engineering
The Sylmar earthquake of 1971 caused significant damage to slender, non-ductile reinforced concrete (RC) shear wall buildings in California. A later survey by the Concrete Coalition in 2011, under the guidance of EERI members, indicated that there are over 3000 vulnerable concrete buildings in California [8]. This led to City of Los Angeles (LA) Ordinance 193893 enacted in 2015, which requires mandatory upgrades to these concrete buildings by 2035. Current practice to meet the requirements of this ordinance, with respect to RC wall buildings, involves adding new shear walls to the building plan or increasing the cross-sectional area of existing …
A Microscopic Simulation Laboratory For Evaluation Of Off-Street Parking Systems, Yun Yuan
A Microscopic Simulation Laboratory For Evaluation Of Off-Street Parking Systems, Yun Yuan
Theses and Dissertations
The parking industry produces an enormous amount of data every day that, properly analyzed, will change the way the industry operates. The collected data form patterns that, in most cases, would allow parking operators and property owners to better understand how to maximize revenue and decrease operating expenses and support the decisions such as how to set specific parking policies (e.g. electrical charging only parking space) to achieve the sustainable and eco-friendly parking.
However, there lacks an intelligent tool to assess the layout design and operational performance of parking lots to reduce the externalities and increase the revenue. To address …
Evaluation And Influence Of Recycled Concrete Aggregate Base Layers On Hma Pavement Performance, Jessie Daniel Ramirez
Evaluation And Influence Of Recycled Concrete Aggregate Base Layers On Hma Pavement Performance, Jessie Daniel Ramirez
Theses and Dissertations
This research investigated the influence of the RCA base layers on the HMA pavement performance as compared with CA base layers using laboratory tests on collected base layer materials and field tests on corresponding pavement sections. Field and laboratory testing programs were conducted to investigate RCA and CA base layer materials in which identified test sections at the selected pavement sites were subjected to testing using FWD, walking profiler, and DCP. Visual distress surveys were also conducted at the selected pavement sections. RCA and CA base layer samples were collected from these pavement sites and were subjected to a laboratory …
On The Development Of 8,000 Psi Geopolymer Mortar For Practical Use In Field Applications, Remington Gabriel Reed
On The Development Of 8,000 Psi Geopolymer Mortar For Practical Use In Field Applications, Remington Gabriel Reed
Graduate Theses and Dissertations
Although there are several perceived benefits from the use of geopolymer binder as an alternative to ordinary portland cement in concrete materials, it is not widely used in field applications. Geopolymer materials have no set guidelines for mixture design and often require heat curing to facilitate strength gain. Additionally, many geopolymers are created using carefully controlled and high quality materials and activator chemicals. These factors greatly affect the practicality of the material. The goal of this research was to create a geopolymer material capable of achieving high compressive strengths at 28 days without heat curing, and using only readily available …
Developing Ultra-High Performance Concrete (Uhpc) With Locally Available Materials, Ali Alsalman
Developing Ultra-High Performance Concrete (Uhpc) With Locally Available Materials, Ali Alsalman
Graduate Theses and Dissertations
Ultra-High Performance Concrete (UHPC) can enhance the durability and resilience of concrete structures. The use of local materials is a fundamental step to save energy and reduce the cost of concrete. The main focus of this research was to develop a UHPC with compressive strength of 150 MPa using locally sources materials. In this study, the effect of fine materials, binder type and content, type of mixer, steel fibers and curing regimes on concrete’s compressive strength were investigated. The relationship between compressive strength and elastic modulus was also studied. This study synthesizes all relevant experimental data in the literature to …
Effect Of Continuity Plate Eccentricity On The Performance Of Welded Beam-To-Column Connections, Jason Thomas Norwood
Effect Of Continuity Plate Eccentricity On The Performance Of Welded Beam-To-Column Connections, Jason Thomas Norwood
Graduate Theses and Dissertations
Beam-to-column connections in structural steel buildings may have varying degrees of rotational restraint and varying degrees of moment transfer. In fully restrained moment connections, shear is typically transferred through the beam web, while the moment is mostly transferred through the beam flanges which create tension/compression force couples. Column sections that are incapable of resisting these flange forces are often retrofitted with continuity plates within the connection region to improve capacity. In cases of unequal beam depths on either side of the column, an eccentricity between the framed-in beam flange and continuity plate may be required; however, limited research exists to …
Utilizing The Hvsr Second Peak For Surface Wave Inversions In The Mississippi Embayment, Ashraf Kamal Himel
Utilizing The Hvsr Second Peak For Surface Wave Inversions In The Mississippi Embayment, Ashraf Kamal Himel
Graduate Theses and Dissertations
Ambient noise data from 24 sites within the Mississippi Embayment were analyzed to estimate the fundamental frequency using the horizontal to vertical spectral ratio (HVSR) method. The fundamental frequency ranged from 0.17 to 3.43 Hz for the tested sites. At seventeen of the sites, a second higher frequency HVSR peak, which ranged from 0.617 Hz to 2.154 Hz, was observed in addition to the fundamental HVSR peak. The second peak frequency in the HVSR curve has been attributed by previous researchers as either an odd harmonic of the fundamental peak or a shallow impedance contrast from the Memphis sand layer …
Development Of Anti-Icing Airfield Heated Pavement Systems Using Solar Energy, Joseph Daniels
Development Of Anti-Icing Airfield Heated Pavement Systems Using Solar Energy, Joseph Daniels
Graduate Theses and Dissertations
This dissertation analyzes developing and assessing the viability of an anti-icing airfield heated pavement system using solar energy. This study includes two components, a field experimentation component and a numerical analysis component. Field experimentation investigates two systems: (1) an electrical heated pavement system with a photovoltaic energy system as its power source, and (2) a hydronic heated pavement system with a solar water-heating system as its heating source. The systems operate under an automated thermostat heating sequence for operation optimization and energy conservation. Study results found the solar systems capable of supplying enough energy to maintain pavement surface temperature above …
Effect Of Cement Content On Concrete Performance, Caleb Joshua Lebow
Effect Of Cement Content On Concrete Performance, Caleb Joshua Lebow
Graduate Theses and Dissertations
Of all the traditional concrete materials, portland cement has the greatest impact on mixture cost and the environment. Cement is in many ways the glue holding concrete together (Weiss, 1999), and as such, it plays a major role in fresh and hardened concrete properties. Without the proper range of cement in the mixture, low strength development or excessive shrinkage may occur leading to premature deterioration. The Arkansas Department of Transportation (ARDOT) recognizes two types of concrete for use in bridge construction, Class S and Class S(AE). This paper focuses on the findings from testing of Class S(AE) concrete, short for …