Civil Engineering Commons^™

Pace, Clint And Linda Pace (Fa 879), Manuscripts & Folklife Archives

FA Finding Aids

Finding aid only for Folklife Archives Project 879. Project titled: “Water-powered Mills in Warren County, Kentucky.” Includes history of water run mill sites in Warren County, Kentucky, mill terms, and survey sheets with brief descriptions of mills. Sheets include a brief description, informant’s name, and an illustration of the water mill.

Numerical Studies For Improving Fracture Toughness Resistance Curve Testing Using Single-Edge (Notched) Tension Specimens, Yifan Huang

Electronic Thesis and Dissertation Repository

The fracture toughness resistance curve, i.e. the J-integral resistance curve (J-R curve) or the crack tip opening displacement resistance (CTOD-R) curves, is widely used in the integrity assessment and strain-based design of energy pipelines with respect to planar defects (i.e. cracks). This thesis deals with issues related to the experimental determination of the J(CTOD)-R curves using the newly-developed single-edge (notched) tension (SE(T)) specimens. In the first study, the plastic geometry factor, i.e. the η_pl factor, used to evaluate J in a J-R curve test based on …

Linder, Gary (Fa 953), Manuscripts & Folklife Archives

FA Finding Aids

Finding aid only for Folklife Archives Project 953. Paper titled: “White Mills.” Project includes a description and photo of White Mills village and the watermill in Hardin County, Kentucky.

Innovating Two-Stage Concrete With Improved Rheological, Mechanical And Durability Properties, Manal F. Najjar

Electronic Thesis and Dissertation Repository

Two-stage concrete (TSC), also known as preplaced aggregate concrete, is a special type of concrete that is produced using a unique procedure which differs from that of conventional concrete. TSC is distinguished by its high coarse aggregate content and exceptional placement technique, whereby aggregates are first pre-placed in the mold then injected with a special grout. The preplacement of aggregates saves substantial energy since only the grout needs mechanical mixing; the grout is self-leveling and needs no vibration and no mechanical compaction. However, TSC applications are still limited despite substantial advancement of modern concrete technology. Therefore, there is a need …

Propuesta Metodológica Para El Diagnóstico De Sistemas De Abastecimiento De Energía Eléctrica, Y Agua Con Enfoque A La Producción Agrícola En El Sector Rural, Natalia Alejandra Perilla Sarmiento, Santiago Andres Torres Jara

Ingeniería Civil

No abstract provided.

Análisis De Los Impactos Generados Por Proyectos De Peatonalización En Bogotá. Estudio De Caso: Avenida Carrera Séptima, Diego Nicolas Rueda Quintero, Roger Garnica Barbosa

Ingeniería Civil

No abstract provided.

Análisis Operacional Del Tramo De La Calle 153 Entre La Autopista Norte Y La Avenida Boyacá, Y La Incidencia Que Presentan Las Demoras En El Proyecto Avenida La Sirena, Laura Vanessa Perdomo Sepúlveda, Juan Camilo Rozo Buesaquillo

Ingeniería Civil

No abstract provided.

Bs News September/October

Building Services Engineering

No abstract provided.

Pyrolysis Of Dried Wastewater Biosolids Can Be Energy Positive, Patrick J. Mcnamara, Jon Koch, Zhongzhe Liu, Daniel Zitomer

Civil and Environmental Engineering Faculty Research and Publications

Pyrolysis is a thermal process that converts biosolids into biochar (a soil amendment), py-oil and py-gas, which can be energy sources. The objectives of this research were to determine the product yield of dried biosolids during pyrolysis and the energy requirements of pyrolysis. Bench-scale experiments revealed that temperature increases up to 500 °C substantially decreased the fraction of biochar and increased the fraction of py-oil. Py-gas yield increased above 500 °C. The energy required for pyrolysis was approximately 5-fold less than the energy required to dry biosolids (depending on biosolids moisture content), indicating that, if a utility already uses energy …

Framework For Event-Based Semidistributed Modeling That Unifies The Scs-Cn Method, Vic, Pdm, And Topmodel, Mark Bartlett, Anthony J. Parolari, Jeffrey Mcdonnell, Amilcare Porporato

Civil and Environmental Engineering Faculty Research and Publications

Hydrologists and engineers may choose from a range of semidistributed rainfall-runoff models such as VIC, PDM, and TOPMODEL, all of which predict runoff from a distribution of watershed properties. However, these models are not easily compared to event-based data and are missing ready-to-use analytical expressions that are analogous to the SCS-CN method. The SCS-CN method is an event-based model that describes the runoff response with a rainfall-runoff curve that is a function of the cumulative storm rainfall and antecedent wetness condition. Here we develop an event-based probabilistic storage framework and distill semidistributed models into analytical, event-based expressions for describing the …

Influent Wastewater Microbiota And Temperature Influence Anaerobic Membrane Bioreactor Microbial Community, Matthew Seib, K. J. Berg, Daniel Zitomer

Civil and Environmental Engineering Faculty Research and Publications

Sustainable municipal wastewater recovery scenarios highlight benefits of anaerobic membrane bioreactors (AnMBRs). However, influences of continuous seeding by influent wastewater and temperature on attached-growth AnMBRs are not well understood. In this study, four bench-scale AnMBR operated at 10 and 25 °C were fed synthetic (SPE) and then real (PE) primary effluent municipal wastewater. Illumina sequencing revealed different bacterial communities in each AnMBR in response to temperature and bioreactor configuration, whereas differences were not observed in archaeal communities. Activity assays revealed hydrogenotrophic methanogenesis was the dominant methanogenic pathway at 10 °C. The significant relative abundance of Methanosaeta at 10 °C concomitant …

Post-Liquefaction Residual Strength Assessment Of The Las Palmas, Chile Tailings Failure, Tristan Reyes Gebhart

Master's Theses

Assessment of post-liquefaction residual strength is needed for the development of empirically-based, predictive correlations for earthquake engineering design. Previous practice commonly assigned negligible strengths to liquefied materials for engineering analysis, producing overly-conservative designs. Increasingly available case history data, and improved analytical tools have allowed for more accurate and less overly-conservative estimation of soil residual strength, improving empirical predictive models. This study provides a new case history to the limited suite of (approximately 30) liquefaction failure case histories available for post-liquefaction in-situ strength predictive correlations.

This case history documents the Las Palmas gold mine tailings dam failure, resulting from seismic-induced liquefaction …

Automated Control Flaw Generation Procedure: Cheakamus Dam Case Study, Bogdan Pavlovic

Electronic Thesis and Dissertation Repository

This thesis deals with the problem of aging hydropower infrastructure systems and system components, a problem that is very common across Canada. Flaws of common risk analysis methods are noted, and the need for new risk analysis approaches is identified. System dynamics simulation method is introduced as an implementation mechanism for the System Theoretic Process Analysis (STPA). STPA and its adaptation to complex hydropower systems are explained thoroughly. Fuzzy logic is used to model operator’s decision making. The main objectives of the research include the development of an automated generic approach that implements STPA and fuzzy logic for the investigation …

Precast Concrete Pavement Practices—Generic System Use In Michigan, Texas & California, Shiraz Tayabji

JTRP Affiliated Workshops

No abstract provided.

Overview Of Illinois Tollway Precast Panel System, Steve Gillen

JTRP Affiliated Workshops

No abstract provided.

Super-Slab® Precast Pavement System, Dan E. Moellman

JTRP Affiliated Workshops

No abstract provided.

Precast Concrete Pavement Practices Overview, Shiraz Tayabji

JTRP Affiliated Workshops

No abstract provided.

Analysis And Recommendations To Improve Traffic Safety & Flow For Pedestrians Bicyclists And Motorists Along Franklin Street, Matthew Pelletier

Electronic Theses and Dissertations

Franklin Street is a minor arterial servicing Portland, Maine that connects Commercial Street and Route 1 to I-295 and has been a target for redevelopment for some time. Franklin is the epitome of traffic congestion, and has unsafe conditions for pedestrians, bicyclists and motorists alike. Portland is the biggest city in Maine and is an important hub for employment, housing and tourism throughout the year. As the city grows, there is a greater demand to build more sustainable, multi-use streets to service all modes of transportation that supports business development, open space and growth. This new vision is being applied …

Development Of A New Nanohub Simulation Tool: Coarse Graining Of Crystalline Nano-Cellulose., Kuo Tian, Mehdi Shishehbor, Pablo Zavattieri

The Summer Undergraduate Research Fellowship (SURF) Symposium

Crystalline Nano-cellulose (CNC) is a general molecular structure obtained from acid hydrolysis of native fiber. They are often very short (100 to 1000 manometers) and the mechanical properties of CNC varies depend on length scale. Due to defect formation of the structure, the mechanical properties of the material composed of such CNC may vary drastically. This study was to provide a numerical tool to integrate a few valid modules and to better understand the mechanical properties of CNC and the overall performance of the bio-inspired material composed of CNC. Our focus is mainly on two type of composite structure [1] …

Strength Of Reinforced Concrete Beams With High-Strength Steel, Brian C. Rogers, Aishwarya Puranam, Santiago Pujol

The Summer Undergraduate Research Fellowship (SURF) Symposium

Structures are commonly made of reinforced concrete, which is a composite material made of concrete and steel reinforcement. Using high-strength steel, with yield stress larger than 100 ksi, could help reduce the quantity of steel required in structural members, thus reducing costs and improving constructability. The hypothesis being tested is that smaller quantities of high-strength steel reinforcement (HSSR) can be used in place of conventional steel in reinforced concrete beams while maintaining similar strength and deformation at failure. Two reinforced concrete beams with two different types of longitudinal steel reinforcement were constructed. The beams were 18 in. wide, 30 in. …