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 “"Mixing water"”.
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Emulsified asphalt cement as a partial replacement for the mixing water in portland cement concrete
Call number: LD2668 .T4 1963 S38
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Optimizing flow rate and bacterial removal performance of ceramic pot filters in Tamale, Ghana
Pure Home Water (PHW) is an organization that seeks to improve the drinking water quality for those who do not have access to clean water in Northern Ghana. This study focuses on the further optimization of ceramic pot filters, which is a promising low-cost household water treatment and the main …
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Investigating mechanical properties of ordinary portland cement. Investigating improvements to the mechanical properties of Ordinary Portland Cement (OPC) bodies by utilizing the phase transformation properties of a ceramic (Zirconia).
… The ZrO2-OPC discs were prepared by powder mixing, water hydration and uniaxial pressing. Vicat needle tests showed that tetragonal-ZrO2 increases the initial setting rate. Microscopy indicated that porosity distribution changes near to ZrO2 particles. Zirconia has also been introduced into …
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Utilising Waste Paint and Waste Glass in Concrete
… waste paint as a replacement for conventional water-reducing and air-entraining admixtures and a partial replacement for mixing water, and crushed waste glass as a partial replacement for natural coarse and fine aggregates. An in-depth study on the effects of waste latex paint on the …
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Drinking Water Treatment Waste as an Alternative for Internal Curing and Cement Replacement in Concrete
… cracks which become high permeability routes for water and aggressive ion movement, such as chlorides to reinforcing steel. Drying shrinkage can be controlled by appropriate curing methods, however proper curing does little to affect autogenous shrinkage, especially in low water-to-cementitious …
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Expansion and shrinkage of early age cementitious materials under saturated conditions : the role of colloidal eigenstresses
Mixing water with anhydrous cement powder and other additives results in a viscid cement slurry and triggers a set of complex exothermic reactions. As the cement slurry transitions from a suspension to a gel and ultimately to a stone-like porous solid, the material develops mechanical properties. …
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Using untreated and nanobubble-treated potable and wastewater in mortar
… places a significant demand on potable freshwater resources, with more than two billion tonnes of water used each year for producing concrete. The increase in population growth, demand for infrastructure, and climate-induced water scarcity, especially in arid and semi-arid regions such as …
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Geochemistry of Arsenic, Manganese, and Iron in the Dexter Pit Lake, Tuscarora, Nevada
… of numerous conservative elements in pit lake waters. The previous studies additionally identified arsenic (As), manganese (Mn), and iron (Fe) as elements that displayed non-conservative behavior in the pit lake. The purpose of the current research is to characterize and quantify the physical …
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Assessing the Potential of Granular Activated Carbon Filters to Limit Pathogen Growth in Drinking Water Plumbing Through Probiotic Versus Prebiotic Mechanisms
… pathogens that can be transmitted via drinking water, when tiny droplets containing the bacteria are aerosolized and inhaled during activities such as showering. The resulting respiratory illnesses, Legionnaires’ Disease and NTM lung disease, are among the leading sources of drinking water …
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A study of the large scale circulation and water mass formation in the Nordic seas and Arctic Ocean
In this thesis, production of dense water that feeds the dense overflows across the Greenland-Scotland Ridge has been considered. A new circulation scheme is developed which is consistent with the water masses, currents and air-sea fluxes in the region, and with the important observation that the …