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Full-Text Articles in Engineering
Effects Of Electro-Osmotic Consolidation Of Clays And Its Improvement Using Ion Exchange Membranes, Lucas Martin
Effects Of Electro-Osmotic Consolidation Of Clays And Its Improvement Using Ion Exchange Membranes, Lucas Martin
Dissertations
Electro-osmosis is an established method of expediting consolidation of soft, saturated clayey soils compared to commonly used methods, such as preloading with wick drains. In electro-osmotic consolidation a direct current (DC) is applied via inserted electrodes. This causes hydrated ions in the interstitial fluid to migrate to oppositely charged electrodes. Because the clay particles have a negative surface charge, the majority of ions in the interstitial fluid are positively charged. Therefore, the net flow will be towards the negatively charged electrode (cathode), where the water can be removed and thus consolidation is achieved. Certain problems, such as pH changes in …
Seguimiento De La Concentración De Cloro Residual En Tanque De Almacenamiento, Red De Distribución Y Tanques Residenciales En El Municipio De Fortul, Departamento De Arauca, Niray Andrés Enciso Jauregui
Seguimiento De La Concentración De Cloro Residual En Tanque De Almacenamiento, Red De Distribución Y Tanques Residenciales En El Municipio De Fortul, Departamento De Arauca, Niray Andrés Enciso Jauregui
Ingeniería Civil
En las plantas de tratamiento de agua para el consumo humano se pueden emplear diferentes técnicas de tratamiento y de desinfección. El cloro es un químico que se emplea para la inactivación de diferentes microorganismos y su efectividad está influenciada por la concentración aplicada, tiempo de contacto, temperatura, componentes y pH del agua. En el país, existen dificultades con el monitoreo y seguimiento del Cloro Residual en los acueductos, siendo un tema de relevancia al garantizarse la calidad del agua potable en el sistema. Según la Resolución 2115 de 2007 del Ministerio de la Protección Social y Ministerio de Ambiente, …
Binding Of Nitrite In Concrete, Cement Mortar And Paste, Saad Alshehri
Binding Of Nitrite In Concrete, Cement Mortar And Paste, Saad Alshehri
USF Tampa Graduate Theses and Dissertations
Calcium nitrite as a corrosion inhibitor is mainly used to protect steel reinforcement in concrete by reducing its corrosion rate. Hence the effectiveness of calcium nitrite depends on its availability as a free nitrite in the pore solution. The present research work aims to determine the concrete mixture component mostly responsible for nitrite binding in concrete. Firstly, the experimental program included testing of nitrite binding in cement paste. Secondly, the effect of adding the fine aggregate (mortar mix) on nitrite binding was assessed. Finally, the mix with coarse aggregate (concrete mix) was evaluated. In-situ leaching method was used to obtain …