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 9 of 9 for “"Wet-dry cycles"”.
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Development and Use of Moisture-Suction Relationships for Geosynthetic Clay Liners
… (WRCs) to the data. WRCs were determined for wetting processes and drying processes in terms of gravimetric moisture content and volumetric moisture content.</p> <p>The effects of GCL type, hydration solution, wet-dry cycles, and temperature on the moisture-suction relationships were analyzed. …
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Long-term response of soils subjected to repetitive geoenvironmental loads
Repetitive loading cycles originate from a variety of natural and industrial processes, affect soil properties and the long-term performance of geotechnical systems. This thesis provides unprecedented experimental data and physical analyses of repetitive environmental loading cycles on …
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Dimensional Stability of Geosynthetic Clay Liners in Landfill Applications
… tested by subjecting various GCL products to wet-dry cycles and measuring the dimensional change with each cycle. Different GCL types were each tested under various combinations of initial moisture content (as-received, 50, 75, 100, and 125%), permeant types (tap water, distilled water, and …
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Factors influencing salt-induced weathering of building sandstone.
… was promoted. Samples were then exposed to cycles of humidity and temperature that simulate wet/dry cycles based on field data from a representative Scottish environment. Additional studies involved exposure of samples to SO2 gas and water spray at acid pH. These studies aimed at …
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Additive Manufacturing of lignocellulosic composites for riverine resilience
… the first evaluation of FDM composites under wet-dry cycles across all length scales. Cork composites displayed superior water and thermal resistance than bamboo composites showing potential as exterior panels in flood contexts. The research identified that the strength stiffness properties of …
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The impact of bacteria on the biophysics of water retention and flow in soil
… potentials from -1 cm to -100 cm during two wet-dry cycles. Sorptivity (S, mm s-1/2) of the soil, indicative of water repellency, was determined using a mini-infiltrometer setup and has been reported as the rate of infiltration of water into the soil. Bacteria have been shown to increase …
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Crack-resistant and self-healing cut-off wall materials incorporating polymers and minerals
… mixes is greatly improved by SAPs under wet-dry cycles, and the soil mix samples demonstrate enhanced self-healing performance thanks to the swelling of the SAPs. Similarly, the swelling of the oil sorbents managed to block 500µm-wide cracks completely, and the oil sorbent-containing …
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Prebiotic assembly and replication of nucleic acids
… solvents coupled to heating and cooling cycles, and in Chapter 3, using wet-dry cycles as a robust and efficient prebiotic method. In Chapter 4, I will explore nonenzymatic ligation of substrates once assembled on templates that is required to demonstrate a nucleic acid replication cycle …
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The Mechanism and Timescales of Soil Formation in the Hyper-arid Atacama Desert, Chile
… rates. The <sup>10</sup>Be data suggested a drying after ~4.7 Ma, likely due to Andean uplift, and the returning to an insignificant wet period at ~1 Ma, possibly connected to global climate change. Similarly, <sup>36</sup>Cl discontinuities with depth also suggested the interruption of …