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 11 of 11 for “"shrink-swell"”.
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Quantifying Properties and Variability of Expansive Soils in Selected Map Units
… to examine and quantify the relationship between shrink-swell potential, shrink-swell indices, and soil properties. The mineralogy classes, soil series, and (physiographic provinces, parent materials) examined include smectitic -- Jackland and Waxpool (Triassic, diabase), Iredell (Piedmont, …
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Delineation of Landslide Hazard and Development of Mitigation Tools in a Vulnerable City
… and also identified seasonal changes due to shrink- swell of expansive soils. Although the InSAR displacement data contains some noise, results identified 132 unstable slopes within the study area caused by soil creep and earthflows. Also, the shrink-swell of expansive soils causes a seasonal …
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Magnetic Characteristics of Carboniferous Continental Depositional Systems: Implications for the Recognition of Depositional Hiatuses
… of Fe-rich clays as well as vertical mixing by shrink-swell mechanisms. These well-developed vertisols are interpreted to reflect significant hiatuses in sedimentation associated with prolonged exposure on interfluve/floodplain surfaces that may correlative with incised valleys (lowstand surface …
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Interpreting site formation processes affecting re-emergent cultural sites within reservoirs: A case study of St. Thomas, Nevada
… intrusion and structural instability caused by shrink-swell sediments. Preservation and conservation measures for cultural sites located within these environments are not well developed; the data collected and the results generated from this research are valuable tools in formulating and …
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Shear Strength Parameters of Sand Fly Ash Cement Mixtures
… studies using fly ash are focused on controlling shrink-swell potential of clays. This study utilized the less desirable class F fly ash to assess the improvement of shear strength parameters of granular soils. Two mix designs were developed and tested using consolidated undrained, unconfined …
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Long-Term (24-Year) Effects of Harvest Disturbances on Ecosystem Productivity and Carbon Sequestration in Tupelo-Cypress Swamps in the Mobile-Tensaw River Delta
… conditions, high rates of coppice regeneration, shrink-swell ameliorative properties of the soil and creation of more complex microtopography within SKID treatments.
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Optimization of Soil-Lime and Cement Mixes for Compressed Earth Stabilized Blocks for Low-Cost Housing in East Africa (Kenya)
… cement in a two-stage mixing process; reduce the shrink swell of high Plasticity Index (PI) soils by reducing the PI with lime (cure for 24 hrs.). Then provide strength with cement to ensure blocks are dense and durable with regular surfaces and edges. Phase 1 testing revealed improvements in the …
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Characterization of the Engineering Properties and Economic Potential of the Transitional Clay Unit of the Ripley Formation, Northeast Mississippi
… Formation are studied, to characterize the swell potential of the transitional clay, and to assist with the evaluation of the possible commercial uses of the soil. The transitional clay is an Upper Cretaceous unit characterized as being, medium to dark gray, fossiliferous, laminated to …
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Novel Time-Integrated Quantification of Sediment-Associated Fecal Indicator Bacteria in Rural Alabama Creek with Straight Pipes
… rural poverty, limited sewer access, and shrink-swell clays preclude the use of conventional septic systems, leading to both failing septic systems and discharge of raw sewage from homes through "straight pipes." The degree to which fecal microbes are associated with the suspended sediment …
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Paleosol evolution in a sequence stratigraphic framework, Cretaceous Ferron Notom Delta, south central Utah, U.S.A.
… Ferron Notom Delta indicate the prevalence of shrink-swell processes, suggesting fluctuating soil moisture conditions. Alternating soil moisture conditions suggest seasonality in rainfall, linked to a paleoclimate with more wet periods than dry. Vertical organization of paleosols in the …
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Enhancing the engineering properties of expansive soil using bagasse ash, bagasse fibre and hydrated lime
… change against fluctuations of moisture content. Shrinkage and expansion of soil can commonly take place near the ground surface, where it is directly subjected to seasonal and environmental variations. Construction of civil engineering structures on expansive soils is highly risky, as this type …