Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"In Situ Tests"”.
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Rational interpretation of in-situ tests in cohesive soils
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1992.
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In-situ tests of sound-bubble-strobe light barrier technologies to prevent the range expansions of Asian carp
… molitrix) carp (collectively, Asian carp) have invaded the Mississippi River Basin and have successfully established populations in the Illinois River. Correlative studies have suggested that Asian carp in the Illinois River have negatively influenced native planktivorous fishes and they now …
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Load and resistance factor design of drilled shafts in shale using SPT and TCP measurements
… design methods for design of drilled shafts in shale and other weak rock. These methods are generally based on Load and Resistance Factor Design (LRFD) methods that relate uniaxial compressive strength measurements of rock cores to the side and tip resistance for drilled shafts. However, …
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Ensaios, "in situ", de resistência ao arrancamento de placas horizontais reduzidas
This report presents the results of a set of in situ tests with small depth, circular plates, buried at shallow embedment, searching for the influence of the diameter and dept of the plate and diameter of the pit on the uplift load carrying capacity. It was also aimed to test the feasibility of …
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The wear of materials in hydraulic transport pipelines
… of particulate solids through pipelines results in wear of the pipeline walls. The lifetime of the pipeline is determined by this rate of material loss and is therefore critical to the designer. Due to the small amounts of material lost in in-situ tests, requiring in many cases in …
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Nanolaminate coatings to improve long-term stability of plasmonic structures in physiological environments
… metal nano-structures to concentrate light into deep-subwavelength volumes has propelled their use in a vast array of nanophotonics technologies and research endeavors. They are used in sensing, super-resolution imaging, SPP lithography, SPP assisted absorption, SPP-based antennas, light …
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Análise de fundações submetidas a esforços de arrancamento pelo Método dos Elementos Finitos
… of foundations subjected to pull-out forces, using the Finite Element Method. ln this subject, the results of field tests in footings and pier-foundations are analysed. These tests were made on a gneissic residual soil, near The City of Rio de Janeiro. The field observations are compared with …
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Evaluation of Novel and Low-Cost Materials for Bipolar Plates in PEM Fuel Cells
… make up a significant fraction of the total cost in a polymer electrolyte membrane fuel cell stack. In an attempt to reduce these costs, a novel manufacturing method was developed for use with composite materials. Conductive fillers were mixed with a polypropylene binder and molded into single …
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Effects of Reservoir Releases on Slope Stability and Bank Erosion
Reservoir release patterns are determined by a number of purposes, the most fundamental of which is to manage water resources for human use. Managing our water resources means not only controlling the water in reservoirs but also determining the optimum release rate taking into account factors such …
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Finite element analyses of pile load tests performed in the Yorktown formation, Newport News, Virginia
The finite element method is used in determining the load-capacity and behavior of a single concrete pile modeled after full scale instrumented test piles which were employed in the Tidewater area of Virginia. Specifically, this report describes the subsurface conditions and full scale pile tests …
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Comparing In Situ and Bulk Constitutive Properties of a Structural Adhesive
In the continuing quest for more efficient designs, structural adhesives are being used in place of, or with, traditional fastening methods; however designing with adhesives is refined as traditional methods. To obtain the adhesive design properties, tests are often performed on bulk tensile and …
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Laboratory specimen preparation for cold recycled asphalt
In Australia the use of Reclaimed Asphalt Pavement material (RAP) is increasing. Cold recycling has advantages over other recycling processes and conventional paving methods, making it a viable, cost-effective technique which preserves natural resources and reduces energy costs. The service life of …
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U.S. National Liquefaction Hazard Maps and their Implications for Engineering Practice and Policy
Abstract: This study introduces U.S. National Liquefaction Hazard Maps (NLHMs) developed using a mechanics-informed, machine-learning geospatial liquefaction model trained on more than 37,000 cone penetration tests from the U.S. and abroad. The model surrogates state-of-practice liquefaction …
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Experimental and Analytical Study of Vibrations in Long Span Deck Floor Systems
… (LSDFS). The research comprised three stages. In the first part, experimental in-situ tests were conducted on thirteen bays of buildings under construction. The natural frequencies and acceleration responses were captured to observe the vibration behavior of the tested floors. In the second …
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Influence of near surface moisture gradients in concrete on 'Autoclam' permeation measurements
In this thesis the effect of moisture in the surface layers of concrete on the permeation properties measured using the 'Autoclam' is investigated. A literature survey indicated two main ways of removing the influence of moisture on these tests - to assess the moisture condition of the concrete and …
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Improving CPT-Based Earthquake Liquefaction Hazard Assessment at Challenging Soil Sites
Earthquake-induced soil liquefaction is a phenomenon in which saturated, sandy soil loses its strength and stiffness during earthquake shaking. Liquefaction can be extremely costly and damaging to infrastructure. The commonly used "simplified" stress-based liquefaction triggering framework is …
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Development of in-situ toughened silicon-rich alloys : a new class of castable engineering ceramics
Despite having a broad set of desirable properties, silicon's potential as a primary constituent in a structural material has not yet been realized because of its extremely low fracture toughness. Motivated by the microstructural design techniques used in toughening inherently brittle ceramic …
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Development of a Sediment Sampling Free Fall Penetrometer Add-on Unit for Geotechnical Characterization of Seabed Surface Layers
In-situ geotechnical testing of surficial sediment layers in areas of active sediment dynamics can provide essential information about physical and geotechnical variations of sediment properties with regards to active sediment remobilization processes. For example, portable free fall penetrometers …
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Potential Coal Slurry Toxicity to Laboratory and Field Test Organisms in the Clinch River Watershed and the Ecotoxicological Recovery of Two Remediated Acid Mine Drainage Streams in the Powell River Watershed, Virginia
The Clinch and Powell Rivers located in Southwestern Virginia contain some of the most diverse freshwater mussel assemblages found throughout North America. However, in recent decades mussel species decline has been documented by researchers. The presence of coal mining activity in the watersheds …
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