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Investigating The Effect Of Stress, Wetting, And Compaction On Settlement Potential Of Mine Spoils, Lauren M. Little
Investigating The Effect Of Stress, Wetting, And Compaction On Settlement Potential Of Mine Spoils, Lauren M. Little
University of Kentucky Master's Theses
Strip mining in Kentucky has left large areas of land that could potentially be used for business and housing developments. However, the mine spoils underlying these areas are prone to severe differential settlement due to a variety of factors. Mine spoil from the Gateway Business Park in Jenkins, Kentucky was used for a series of laboratory tests to develop relationships between shear wave velocity, confining stress, compaction energy, and dry unit weight to develop a method to assess settlement potential. It was found that a stress-corrected shear wave velocity of greater than 275 ft/s/psi0.25 typically indicated dry mine spoil, …
Production Of Low-Energy, 100% By-Product Cement Utilizing Coal Combustion Products, David E. Rust
Production Of Low-Energy, 100% By-Product Cement Utilizing Coal Combustion Products, David E. Rust
University of Kentucky Master's Theses
The ever-increasing quantity of by-products generated from burning coal in the production of electricity has brought about the need for new areas of utilization. This study examined the use of FGD gypsum and fluidized bed combustion ash along with Class F fly ash in the production of low-energy, 100% by-product cement blends. The cement blends used the advantageous properties of the by-product materials to create cementing properties rather than energy intensive clinker used in ordinary portland cement. The FGD gypsum was converted to hemihydrate which rapidly hydrated to provide the cement with early strength gains, whilst the fluidized bed combustion …