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Articles 1 - 30 of 68
Full-Text Articles in Engineering
Influence Of Socio-Economic And Demographic Factors On Crashes In Rural South Carolina At Sub-County Level, Sunil Jakhadi
Influence Of Socio-Economic And Demographic Factors On Crashes In Rural South Carolina At Sub-County Level, Sunil Jakhadi
All Theses
State of South Carolina ranks high in the fatality rates. The state is a predominately a rural state with more percentage of rural roads. This research focuses on the statistical variation of crash rates between the county and block-group, especially rural once to the state. Also, it focuses on the possibility of various socio-economic and demographic characters influence on the high crash rates particularly in rural South Carolina.
Crash database for the year 2004 was acquired from South Carolina Department of Transportation and was processed by the research team at Clemson University. This processed database was imported into GIS. Spatial …
Effect Of South Caroline Belt Law On Safety Belt Use, Sourabh Patki
Effect Of South Caroline Belt Law On Safety Belt Use, Sourabh Patki
All Theses
A number of factors and accessories help save lives and prevent injuries to road users, yet safety belts have become synonymous with automobile safety today, unlike any accessory before or since their introduction in automobiles. However, the scientific advances in automobile safety, followed by the acceptance of the necessity for safety in automobiles by both the manufacturers and the population, finally leading to the introduction of safety features and their incorporation within the laws occurred over a much longer span, continuing even today. Today's Safety movement aims at increasing safety belt using an awareness campaigns, accompanied by enforcement. Safety belt …
Life Cycle Cost Analysis Of Pavements: State-Of-The-Practice, Zeynep Guven
Life Cycle Cost Analysis Of Pavements: State-Of-The-Practice, Zeynep Guven
All Theses
Life Cycle Cost Analysis (LCCA) is performed by transportation agencies in the design phase of transportation projects in order to be able to implement more economical strategies, to support decision processes in pavement type selection (flexible or rigid) and also to assess the relative costs of different rehabilitation options within each type of pavement. However, most of the input parameters are inherently uncertain. In order to implement the LCCA process in a reliable and trustworthy manner, this uncertainty must be addressed. This thesis summarizes a through research that aims at improving the existing LCCA approach for South Carolina Department of …
Determinación De La Humedad En Suelos Granulares Utilizando Horno Microondas Y Comparación De Los Resultados Con El Método Tradicional, Claudia Patricia Gámez Camargo, Diana Lorena Hilarión Plazas
Determinación De La Humedad En Suelos Granulares Utilizando Horno Microondas Y Comparación De Los Resultados Con El Método Tradicional, Claudia Patricia Gámez Camargo, Diana Lorena Hilarión Plazas
Ingeniería Civil
No abstract provided.
Development Of Fatigue Predictive Models Of Rubberized Asphalt Concrete (Rac) Containing Reclaimed Asphalt Pavement (Rap) Mixtures, Feipeng Xiao
All Dissertations
In recent years, some by-products such as crumb rubber has been used to save money, protect the environment, and extend the life of asphalt pavements. In addition, the utilization of reclaimed asphalt pavement (RAP) is an acceptable practice in many states around the United States and many countries all over the world. However, the use of RAP containing crumb rubber has not been investigated in great detail, so it is essential to explore whether these materials have a positive effect on the fatigue life of asphalt pavement. In general, previous experience shows that the use of RAP has proven to …
Best Practices For Developing The Engineer's Estimate, Karl Niedzwecki
Best Practices For Developing The Engineer's Estimate, Karl Niedzwecki
All Theses
The research project 'Best Practices for Developing the Engineering Estimate' was executed by Clemson University on behalf of the South Carolina Department of Transportation (SCDOT). The primary objective of this research project was to investigate the strengths and weaknesses of two types of estimating methods being utilized today by state department of transportations (DOT) nationwide. These two types of estimating methods are the unit cost line item approach, which the SCDOT utilizes, and the cost-based estimating approach. This research report identifies accuracy obtained, resources expended, and methodologies utilized when implementing either type of estimating approach. This was done so the …
Evaporation Estimation Using A Floating Pan, Michael Klink
Evaporation Estimation Using A Floating Pan, Michael Klink
All Theses
Almost all regions in the United States must accurately estimate evaporation to have effective water management programs. The purpose of this study is to develop a better method for measuring evaporation. Lake evaporation along with meteorological data are measured directly from a floating pan. The floating pan is specifically designed to account for one of the most sensitive parameters of evaporation, the water surface temperature, which the design achieves. However, other design factors such as air movement, solar radiation, stability, heat transfer, wave action, water level range, and site location were also taken into consideration. The evaporation measured from the …
Investigation Into Compatibility Between Repair Material And Substrate Concrete Using Experimental And Finite Element Method, Rashmi Pattnaik
Investigation Into Compatibility Between Repair Material And Substrate Concrete Using Experimental And Finite Element Method, Rashmi Pattnaik
All Dissertations
The failure of concrete repairs is mainly due to improper selection of repair material based on individual repair material properties, without investigating the compatibility between repair material and substrate concrete. In this dissertation the compatibility between eight repair materials and substrate concrete was investigated in three stages. First, individual properties of the repair materials such as setting time, flow, compressive strength, flexural strength, split tensile strength, bond strength, drying shrinkage, freeze-thaw resistance, and permeability, were determined using standard ASTM test procedures. Second, the compatibility was investigated using a composite beam under third point loading. Third, the correlation of repair material …
Optimizing The Project Team's Contribution To Business Objectives, Chad Rowland
Optimizing The Project Team's Contribution To Business Objectives, Chad Rowland
All Theses
The traditional expectations of the project team are for the processes of engineering, procurement, construction, and start-up to be expertly administered. However, these performance criteria can be satisfied yet still not meet the ultimate business needs of the owner. The purpose of this thesis was to determine ways to improve the likelihood of achieving owner's business objectives. Fifty-one questionnaire survey forms were analyzed to obtain data for thirty-three pre-project planning activities. A data analysis concluded with a degree of statistical significance that for thirteen of the thirty-three activities, the more successful projects, as defined by the satisfaction of the business …
Shear-Wave Velocity Model Of Near-Surface Sediments, Site Response, And Building Damage: 1886 Charleston, South Carolina Earthquake, Cedric Fairbanks
Shear-Wave Velocity Model Of Near-Surface Sediments, Site Response, And Building Damage: 1886 Charleston, South Carolina Earthquake, Cedric Fairbanks
All Dissertations
An updated small-strain shear wave velocity (Vs) model of near-surface sediments is constructed using measurements from over 90 investigation sites in the greater Charleston area. It is constructed by separating the Vs measurements into six major geologic units. The six units are: 1) man-made fills, 2) Holocene and late Pleistocene deposits, 3) the Wando Formation, 4) the Ten Mile Hill beds, 5) the Penholoway Formation and the Daniel Island beds, and 6) Tertiary deposits. Median Vs values for these units in the top 25 m are 145 m/s, 111 m/s, 189 m/s, 176 m/s, 285 m/s and 399 m/s, respectively. …
The Effects Of Calcium Magnesium Acetate Deicers On Portland Cement Mortar Bars, Jeffrey Davis
The Effects Of Calcium Magnesium Acetate Deicers On Portland Cement Mortar Bars, Jeffrey Davis
All Theses
This thesis involves the investigation of the effects of Calcium Magnesium Acetate (CMA) deicers on Portland cement mortar bars. In addition to mass-loss, length change, pulse velocity and soak solution pH, the thesis also contains a rigorous chemical analysis of the mortar completed at the National Institute of Standards and Technology (NIST) in Gaithersburg, MD. The research completed at NIST was done using a technique known as X-ray Mapping. The X-ray techniques were employed to determine the exact nature of the damage caused by CMA. The thesis is a combination of two papers, on the physical effects of CMA and …
Experimental Investigation Of Shear Capacity Of Precast Reinforced Concrete Box Culverts, Jarrod Clinton Burns
Experimental Investigation Of Shear Capacity Of Precast Reinforced Concrete Box Culverts, Jarrod Clinton Burns
Civil Engineering Theses
This study presents the experimental investigation of the shear capacity of four precast rinforced concrete box culverts. Each culvert was subjected to a monotomically increasing load through a 20-in x 10-in load plate, designed to simulate a standard HS 20-44 wheel footprint. Each box was instrumented with the following: strain gages, load cell, high-resolution laser sensor, data acquisition hardware and software, and laptop computer. The tests were conducted on 1.22 m x 1.22 m x 1.22 m (4 ft x 4 ft x 4 ft) box culverts, with load being applied at the free spigot end. The location of the …
Trends Of Vehicular Emissions Due To The Effect Of Ethos® Fr As Fuel Additive, Shruthi Satyanarayan
Trends Of Vehicular Emissions Due To The Effect Of Ethos® Fr As Fuel Additive, Shruthi Satyanarayan
Civil Engineering Theses
The main objective of this research was to observe if the addition of the fuel additive Ethos Fuel Reformulator significantly reduced the emissions of CO, CO2, HC and NOX from a light duty vehicle. Data collection was carried out before and after the application of Ethos FR for both Peak and Off-peak traffic conditions, on highway as well as arterial test track. The OBS-1300 analyzed second by second concentrations of the tailpipe emissions. Data analysis was conducted and the following results were observed. 1. There was a significant reduction in NOx Emissions, with the maximum of 45% in the Arterial …
Experimental And Finite Element Based Investigations Of Shear Behavior In Reinforced Concrete Box Culverts, Anil Kumar Garg
Experimental And Finite Element Based Investigations Of Shear Behavior In Reinforced Concrete Box Culverts, Anil Kumar Garg
Civil Engineering Dissertations
This study evaluates the shear behavior and capacity of the precast concrete box culverts subjected to HS 20 truck wheel load. The most critical culvert behavior was considered by studying culverts subjected to zero depth fill and placed on rigid laboratory floor without bedding material. Three major phases were considered to complete the study, which included: (1) experimental program; (2) finite element modeling; and (3) development of distribution width and the determination of shear capacity. A full-scale experimental testing program was undertaken to perform tests on 24 typical precast concrete box culverts designated as per ASTM C 1433-05 with and …
Analysis Of Hat Sectioned Reinforced Composite Beams Including Thermal Effects, Kashif Ali Nayyer Syed
Analysis Of Hat Sectioned Reinforced Composite Beams Including Thermal Effects, Kashif Ali Nayyer Syed
Civil Engineering Dissertations
A simple analytical method for analyzing fiber reinforced polymeric composite beams with hat cross-section is presented. The method includes development of closed-form expression of the axial, bending and their coupling stiffness matrices for the composite beams. The stiffness matrices are obtained by transforming the actual geometrical cross-section of the beam into an equivalent plate using transformation matrices and Parallel Axis theorem. Ply stresses due to mechanical as well as thermal load can easily be obtained at any given location of the beam section. In this approach, the effect of induced in-plane deformation due to bending for an unsymmetrical cross-section is …
Software Didáctico E Interactivo Para La Visualización Del Fenómeno De Resistencia Al Corte Por Medio Del Procesamiento De Los Datos Del Ensayo De Triaxial A La Luz De Las Teorías De Falla De Mohr Coulomb Y De Estados Críticos Rescort V1, Ciro Antonio Suspes Pachón, Oscar Iván López Rodríguez, Richard Ansoly Suárez
Software Didáctico E Interactivo Para La Visualización Del Fenómeno De Resistencia Al Corte Por Medio Del Procesamiento De Los Datos Del Ensayo De Triaxial A La Luz De Las Teorías De Falla De Mohr Coulomb Y De Estados Críticos Rescort V1, Ciro Antonio Suspes Pachón, Oscar Iván López Rodríguez, Richard Ansoly Suárez
Ingeniería Civil
No abstract provided.
Estabilización Del Talud En El Pr 55+950 De La Vía Manizales Mariquita, Jhon Jairo Poveda Orduña, Guillermo Vargas Aldana
Estabilización Del Talud En El Pr 55+950 De La Vía Manizales Mariquita, Jhon Jairo Poveda Orduña, Guillermo Vargas Aldana
Ingeniería Civil
No abstract provided.
Software Para El Cálculo Y Dimensionamiento De Plantas De Tratamiento De Aguas Residuales Por El Método De Lagunas De Estabilización, Manuel Alexis Bolaños Fresneda, Cesar Hernán Castellanos Heredia, Néstor Julián Párraga Escobar
Software Para El Cálculo Y Dimensionamiento De Plantas De Tratamiento De Aguas Residuales Por El Método De Lagunas De Estabilización, Manuel Alexis Bolaños Fresneda, Cesar Hernán Castellanos Heredia, Néstor Julián Párraga Escobar
Ingeniería Civil
No abstract provided.
Asentamientos Generados Por Consolidación Secundaria Del Barrio San José De Bavaria Perteneciente A La Localidad De Suba En Bogotá D.C, Germán Eduardo Castro Bermeo, Juan José Daza Marín, Carlos Fabian García Torres
Asentamientos Generados Por Consolidación Secundaria Del Barrio San José De Bavaria Perteneciente A La Localidad De Suba En Bogotá D.C, Germán Eduardo Castro Bermeo, Juan José Daza Marín, Carlos Fabian García Torres
Ingeniería Civil
No abstract provided.
Expressions For Bond Stress Of A Tension Splice In Steel Reinforced Concrete, Jkumar Gopalarathnam
Expressions For Bond Stress Of A Tension Splice In Steel Reinforced Concrete, Jkumar Gopalarathnam
Civil Engineering Theses
The aim of the research is to develop expressions for the bond stress at a tension splice in reinforced concrete. Many experiments have been conducted inorder to ascertain the relationship between appropriate variables and develop an expression to evaluate the bond stress. The scope of this research is to use existing experimental data to establish a relation and develop an expression. Before the preprocessing begins, the data are organized into different categories such as bottom, top and side bars, and bars with transverse reinforcement. The existing experimental data is evaluated for statistical validation. It is then subjected to individual and …
Optimización Del Acueducto Por Gravedad Del Municipio De Timaná Huila, David Leonardo Benavides Garzón, Mildred Yohana Castro Molano, Hernan Mauricio Vizcaíno Cagüeño
Optimización Del Acueducto Por Gravedad Del Municipio De Timaná Huila, David Leonardo Benavides Garzón, Mildred Yohana Castro Molano, Hernan Mauricio Vizcaíno Cagüeño
Ingeniería Civil
No abstract provided.
Evaluation Of Resilient Modulus Of Cement And Cement-Fiber Treated Reclaimed Asphalt Pavement (Rap) Aggregates, Ajay Potturi
Evaluation Of Resilient Modulus Of Cement And Cement-Fiber Treated Reclaimed Asphalt Pavement (Rap) Aggregates, Ajay Potturi
Civil Engineering Theses
Natural aggregates derived from a variety of source rocks have been used as a road base material. But the extraction of natural aggregates resources is increasingly being constrained by urbanization, increased costs and environmental concerns. Thus, increased amounts of reclaimed materials are being used to supplement natural aggregates in road construction. The 1993 EPA report mentioned that approximately 73 million tons of asphalt pavement material was recycled annually, which amounts to about 80% of the asphalt removed from pavements each year. The use of Reclaimed Asphalt Pavement (RAP) materials in road construction reduces both the amount of construction debris disposed …
Characterization Of Cemented And Fiber-Reinforced Rap Aggregate Materials For Base/ Sub-Base Applications, Carlos A. Ordonez
Characterization Of Cemented And Fiber-Reinforced Rap Aggregate Materials For Base/ Sub-Base Applications, Carlos A. Ordonez
Civil Engineering Theses
The engineering product known as RAP is a bonded base and sub-base material produced by the process of blending crushed recycled construction and demolition waste and debris to specified gradation requirements, and by bonding these with a fine silica Portland cement matrix at optimum moisture for compaction density. RAP has a great potential as an economically, environmentally, and structurally sound alternative to non-bonded materials conventionally used for base/sub-base applications in pavement engineering. The present work is aimed at thoroughly testing the engineering properties of RAP product in order to assess its suitability as a structurally sound and environmentally safe material, …
Photocatalytic Degradation Of Vocs, Toxics And Odors From Air Emissions Of Wastewater Treatment Plants And Municipal Solid Waste Landfills, Mita Suresh Upadhyay
Photocatalytic Degradation Of Vocs, Toxics And Odors From Air Emissions Of Wastewater Treatment Plants And Municipal Solid Waste Landfills, Mita Suresh Upadhyay
Civil Engineering Theses
The 1990 Clean Air Act Amendments (CAAA) require more stringent controls of sources of volatile organic compounds (VOCs) and hazardous air pollutants (HAPs). Air quality managers at the state level are responsible for developing State Implementation Plans (SIPs) to improve regional air quality. Both wastewater treatment and landfills facilities are sources of VOCs, HAPs and odors. This research examines the effectiveness of photocatalytic oxidation (PCO) in treating emissions from wastewater and landfill facilities. PCO rate constants of compounds such as methane, o-xylene, m-xylene, p-xylene and carbonyl sulfide are determined over titanium dioxide (TiO2) catalyst in a continuous mixed-batch reactor. The …
Mode Choice Models For Long Distance Travel In Usa, Isaradatta Rasmidatta
Mode Choice Models For Long Distance Travel In Usa, Isaradatta Rasmidatta
Civil Engineering Dissertations
The influences of technology and economic development on human activity are increasingly taking place on larger spatial scales. As a consequence, complementary interactions between urban regions are getting stronger, which causes urban regions to change. In order to stimulate the integration between regions and states level, policy makers need increased knowledge of the factors that influence long distance travel. From an environmental perspective, long distance trips can be very important because most of the trips are made in personal vehicles or airplanes that affect emissions and fuel consumption. Mode choice alternatives for long distance travel include: personal vehicle, air, and …
Effectiveness Of Signal Coordination As An Emission Reduction Measure For Vehicles, Rajashi I. Parikh
Effectiveness Of Signal Coordination As An Emission Reduction Measure For Vehicles, Rajashi I. Parikh
Civil Engineering Theses
Air Pollution is a significant health and environmental concern. Vehicular emissions are major contributors to many air pollution problems. There is growing interest in reducing carbon dioxide emission because of the alarming increase in the pollution caused by petroleum resulting global warming issue. Various studies have found that U.S vehicles emit half of the CO2 emitted from vehicle all over the world. Dallas Fort Worth is a non-attainment area for ozone and it is required to achieve NAAQS standards by 2010. NOx and VOCs from the automobile are a major precursor of ozone formation in the atmosphere. Traffic signal retiming …
General Response Of Kneading-Compacted Unsaturated Silty Sand Under Drained And Undrained True Triaxial Testing, Sangchul Pyo
General Response Of Kneading-Compacted Unsaturated Silty Sand Under Drained And Undrained True Triaxial Testing, Sangchul Pyo
Civil Engineering Theses
A comprehensive series of 36 drained and 36 undrained true triaxial tests was accomplished to investigate the stress-strain-strength behaviour of kneading-compacted unsaturated silty sand (SP-SM) under multi-axial stress states. Test specimens were prepared at three different initial moist contents (6, 8, 10%) to achieve different compaction-induced suction conditions prior to testing. All samples were then subjected to either a drained or undrained multi-axial stress paths, including conventional triaxial compression (CTC), triaxial compression (TC), triaxial extension (TE), or simple shear (SS) stress path. Initial compaction-induced matric suction was assessed via the SWCC of test soil. The experimental program focuses on soil …
Impact Of A Pre-Combustion Retrofit Device On Vehicular Emissions: A Case Study, Sri Harsha Kanukolanu
Impact Of A Pre-Combustion Retrofit Device On Vehicular Emissions: A Case Study, Sri Harsha Kanukolanu
Civil Engineering Theses
Vehicular emissions are a major cause of air pollution in the cities worldwide. Increased numbers of vehicles and the vehicle miles traveled by them every year means that the emissions are going to have a detrimental effect on the life and environment of this planet. Various control strategies are employed by the transportation and air quality managers at the state and regional levels to improve the ambient air quality. This research was conducted as part of the North Central Texas Council of Governments' Aftermarket Technology and Fuel Additive Research Program, its effort to make the DFW region's air cleaner. The …
Investigation Of Bamboo As Reinforcement In Concrete, Youngsi Jung
Investigation Of Bamboo As Reinforcement In Concrete, Youngsi Jung
Civil Engineering Theses
This study investigated the feasibility of using bamboo as a reinforcement alternative to steel in concrete structural members. The specifications studied were the bamboo's tensile strength and its pullout characteristics in concrete. Two types of bamboo, Solid and Moso, were used for tensile testing. The tensile test specimens were prepared with different lengths, 6 in (152 mm) and 12 in (304 mm), and different physical characteristics (with and without nodes). Tensile test specimens were tested to failure and their load deformation characteristics are reported. The failures of the test specimens were identified as: (1) node failure; (2) splitting failure; and …
Experimental Investigations On Small-Strain Stiffness Properties Of Partially Saturated Soils Via Resonant Column And Bender Element Testing, Phayak Takkabutr
Experimental Investigations On Small-Strain Stiffness Properties Of Partially Saturated Soils Via Resonant Column And Bender Element Testing, Phayak Takkabutr
Civil Engineering Dissertations
A comprehensive series of resonant column (ASTM D 2325-68), bender element (ASTM C 778), pressure plate (ASTM D 4015-92), and filter paper (ASTM D 5298) tests were conducted on compacted specimens of poorly graded sand (SP) and high plasticity clay (CH) in order to assess the influence of key environmental factors, namely compaction-induced matric suction and Ko stress state, on small-strain stiffness properties of partially saturated soils. Compaction-induced matric suction in all test specimens was estimated via soil-water characteristic curves (SWCC) for each type of soil. The research work was accomplished in six broad stages. During Stage I, a modified …