Geotechnical Engineering Commons^™

Rule High School Athletic Field Renovation, Nathan W. Foust

University of Tennessee Honors Thesis Projects

No abstract provided.

Indot Qc/Qa Earthwork And Intelligent Compaction Us 31/Us 35 At Kokomo, Kurt Sommer

Purdue Road School

This presentation discusses a 2012 case study using QC/QA Earthwork Specifications and Intelligent Compaction Rollers for soils.

INDOT Contract IR-30111 in Greenfield District on US 31/ US 35 at Kokomo used this process in 2012 and continuing into 2013 for the control and acceptance of approximately 1 million cubic yards of earthwork.

Change In Pore Size Distribution Of Compacted Soil Layers And Its Effect On Solute Breakthrough Curves, Sara Karimi

Electronic Thesis and Dissertation Repository

It is often useful to predict contaminant migration from waste containment systems, such as landfills, as part of the assessment of the overall impact of such systems on the receptor environment. In many instances, material properties, for example, those of the liner, are assumed to be constant. This study was conducted to evaluate the accuracy of considering constant material and transport parameters in the modelling of sodium and chloride breakthrough curves through a compacted soil layer using the commercial software, Pollute v.7. Experiments were conducted with three different mixtures of glass beads and varying amounts of kaolinite (30, 40 ...

Laboratory Investigation Of The Effects Of Temperature And Moisture On Interface Shear Strength Of Textured Geomembrane And Geosynthetic Clay Liner, Taki Stavros Chrysovergis

Master's Theses and Project Reports

A laboratory investigation was conducted to determine the effects of temperature and moisture on the shear strength of textured geomembrane (T-GM) and geosynthetic clay liner (GCL) interface. Several landfill slope failures involving geosynthetics have occurred within the past three decades. Interface shear strength of T-GM/GCL is well documented for testing conducted at laboratory temperatures and at moisture contents associated with GCLs in submerged conditions. However, in-service conditions for landfill liner systems include a wide range of temperatures (extending from below 0 °C to above 40 °C) and a wide range of moisture conditions. Large-scale interface direct shear tests were ...

Seepage And Stability Of A Dam In An Artesian Setting, Sean A. Parks

Civil Engineering Theses, Dissertations, and Student Research

Willow Creek Dam is located in a unique region on the boundary of a confined aquifer, where artesian conditions exist. Recently, groundwater levels have exceeded the elevation of the downstream berm well above anticipated piezometric elevations. It was presumed from limited evidence that these high piezometric levels resulted from pressure in the aquifer rather than from seepage out of the reservoir. The purpose of this investigation was to determine the relative contributions of the reservoir and the regional groundwater to observed piezometric levels and how these levels affect seepage exit gradients and slope stability of the dam.

Comparing the head ...

Fault Mapping With The Refraction Microtremor And Seismic Refraction Methods Along The Los Osos Fault Zone, Justin Riley Martos

Master's Theses and Project Reports

The presence of active fault traces in proximity to any new infrastructure project is a major concern for the design process. The relative displacements that can be experienced in surface fault rupture during a seismic event must be either entirely avoided or mitigated in some way. Blind faults present a significant challenge to engineers attempting to identify these hazards. Current standards of practice employed to locate these features are time consuming and costly. This work investigates the geophysical methods of refraction microtremor (ReMi) and seismic refraction with regard to their applicability in this task. By imaging a distinct lateral variation ...

Monotonic And Cyclic Behaviour Of Steel Fibre-Reinforced And Frp-Steel Fibre-Reinforced Helical Pulldown Micropiles, Mahmoud Meckkey M. El Sharnouby

Electronic Thesis and Dissertation Repository

Helical piles are a deep foundation system that can be used to support pipelines, telecommunication and transmission towers, and low- and medium-rise buildings. Advantages of helical piles include: short installation time with minimal noise and vibration levels; can be installed with ease in limited accessibility site; and onsite quality control by measurement of installation torque.

The main objective of the current research is to assess the performance of steel fibre-reinforced helical pulldown micropiles (RHPM), and fibre-reinforced polymer-steel fibre- reinforced pulldown micropiles (FRP-RHPM) under axial and lateral monotonic and cyclic loading conditions.

The research methodology involved conducting full scale field testing ...

Electrokinetic Dewatering Of Oil Sands Tailings, Yu Guo

Electronic Thesis and Dissertation Repository

Oil sands tailings are the final product of oil sands processing and in the form of slurry with very low solid content. After sedimentation, due to a low hydraulic conductivity of the tailings, both dewatering and consolidating the tailings are difficult. Since electrokinetic (EK) is an effective method to consolidate low permeability soils, the objective of this study is to assess the effectiveness and efficiency of EK dewatering of MFT, a man-made geomaterial. Two series of tests were conducted in this study. In the first series, four EK cell tests were performed on oil sands tailings to measure the electroosmotic ...

Engineering Performance Of Polymer Amended Soils, Gary E. Welling

Master's Theses and Project Reports

A laboratory test program was undertaken to evaluate a series of engineering properties over a range of soil types; amendment types and addition rates; and moisture contents to enhance understanding of the engineering significance of polymer amendment. Four soils were manufactured and tested with varying ranges of fines and plasticity. A proprietary elastic copolymer was tested at addition rates of 0.5% to 2.5% (dry weight basis). Cement was tested at addition rates of 1% to 4%. Lime was tested at an 8% addition rate. Water addition rates ranged from 4% dry of optimum to 4% wet of optimum ...

Thermal And Electrical Behaviors Of Selected Geomaterials, Joon Kyu Lee

Electronic Thesis and Dissertation Repository

Geomaterials can be often classified into two groups: virgin geomaterials such as soil and rock, and by-product materials such as mine tailings, coal fly/bottom ash, foundry sand, kiln dust, blast furnace/steel slag, reclaimed concrete and asphalt. Studies on these materials and their mixtures have been carried out extensively for geoengineering applications, including the characterization of mechanical properties such as the strength, compressibility, compactivity and permeability, as well as mineralogical and geochemical properties. The goal of this study is to investigate the thermal and electrical properties of selected geomaterials and their mixtures for enhancement of knowledge and engineering applications ...

Scale Model Shake Table Testing Of Shallow Embedded Foundations In Soft Clay, Steven Kuo

Master's Theses and Project Reports

This research involves shake table testing of 1g scale models that mimic the coupled seismic response of a structure on a shallow mat foundation and foundation soil (known as soil-foundation-structural-interaction or SFSI). In previous research, SFSI effects have been quantified through analytical models, numerical analyses, and limited field data. This research works towards increasing the amount of empirical data through scale model shake table testing. A suite of earthquake time histories is considered in evaluating a nominal 10^th scale soil-structure model using a flexible wall barrel on a 1-D shake table. San Francisco Young Bay Mud (YBM) is used ...

An Investigation Of Monotonic And Cyclic Behaviour Of Leda Clay, Kimberly K. Rasmussen

Electronic Thesis and Dissertation Repository

The behaviour of a sensitive clay from Ottawa is investigated though strain- and stress-controlled cyclic simple shear, and resonant column tests. Strain-controlled tests were performed at frequencies 0.1 to 10Hz, and amplitudes 0.1% to 5%. Over this range of strain amplitudes there are large drops in stiffness. Strain amplitude has a greater effect on the generation of pore-pressures than frequency. Stress-controlled tests performed at a yield stress ratio of 1 had higher strength at low N but degraded more readily than a test at YSR =2. A novel method of remoulding clay and measuring the remoulding energy is ...

Response Of Foundations To Random Cyclic Loads, Alireza Varshoi

Electronic Thesis and Dissertation Repository

Variable amplitude cyclic loads due to natural phenomena are common for laterally loaded piles. A series of small scale cyclic model test have been performed in the Boundary Layer Wind Tunnel Laboratory. Random loads from a boundary layer wind field were applied to a model consisting of a pile, pole and plate. The same setup was also tested under static conditions for comparison. Hyperbolic projection was used to represent the load – displacement relations. Initial stiffness and hyperbolic capacity were obtained from this method. The number of load cycles was found to affect the behavior of the laterally loaded piles. Load ...

Performance Of Hollow Bar Micropiles Under Axial And Lateral Loads In Cohesive Soils, Ahmed Yehia Abd El-Aziz

Electronic Thesis and Dissertation Repository

The use of hollow core bars in micropiles has greatly increased over the past ten years. Hollow core construction, also known as “self drilled”, is becoming a popular option because it allows a faster installation processes and ground improvement at the same time. Despite the growing demand for hollow bar micropiles, little work has been devoted to evaluating the nominal bond strength between the micropile grout and the surrounding soil, especially in clayey soils. Moreover, the performance of such micropiles under different kinds of loading is still largely unknown and needs to be investigated.

In this study, a research methodology ...