Evaluación del impacto de la adición mineral LC2 sobre la resistencia a la migración de iones cloruro en hormigones base cemento portland
Fecha
2019
Autores
Sánchez Berriel, Rodolfo
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Editor
Universidad Central ``Marta Abreu`` de Las Villas. Facultad de Ingeniería Química y Farmacia. Departamento de Licenciatura Química
Resumen
El presente trabajo evalúa el impacto de la adición mineral LC2, obtenida en la prueba industrial en la fábrica de cemento Siguaney, a principios de este año, sobre la resistencia a la migración de iones cloruro en hormigones base cemento portland. Las pruebas realizadas mediante el ensayo de migración de iones incluido dentro del protocolo STADIUM, muestran comportamientos similares para los especímenes fabricados con la adición mineral LC2 que para los especímenes de cemento portland P35. En este trabajo se utilizó la potenciometría directa para cuantificar la concentración de iones durante el ensayo de migración. Además, se determinaron los porcientos de iones cloruro totales, enlazados y no enlazados en las muestras antes y después del ensayo. De aquí se obtuvo que los hormigones fabricados con la adición LC2 poseían 20.4 % más de iones cloruro en su composición inicial, respecto a los especímenes con cemento portland P35, factor que pudo claramente haber influido en los resultados obtenidos. De los resultados obtenidos se determinó que los especímenes fabricados con la adición mineral LC2 lograron enlazar un contenido 1.5 veces superior de iones cloruro que los especímenes realizados con cemento portland.
The present work evaluates the impact of the LC2 mineral addition, obtained in the industrial carried out in Siguaney cement factory, early this year, over the resistance to the migration of chloride ions in Portland cement concrete. The tests performed by the migration test of the data included in the STADIUM protocol, report similar behavior for the specimens manufactured with the LC2 mineral addition than for the P35 Portland cement specimens. In this work, direct potentiometry is explained to quantify the concentration of ions during the migration test. In addition, the percentages of total, bound and unbounded chloride ions were determined in the samples before and after the test. From this it was obtained that the concretes manufactured with the addition LC2 had 20.4% more chloride ions in their initial composition, respect to the specimens with Portland cement P35, factor that could have had an influence on the results. From the results it was determined that the specimens manufactured with the mineral addition LC2 managed to bind a chloride ions content 1.5 times higher than the specimens made with Portland cement.
The present work evaluates the impact of the LC2 mineral addition, obtained in the industrial carried out in Siguaney cement factory, early this year, over the resistance to the migration of chloride ions in Portland cement concrete. The tests performed by the migration test of the data included in the STADIUM protocol, report similar behavior for the specimens manufactured with the LC2 mineral addition than for the P35 Portland cement specimens. In this work, direct potentiometry is explained to quantify the concentration of ions during the migration test. In addition, the percentages of total, bound and unbounded chloride ions were determined in the samples before and after the test. From this it was obtained that the concretes manufactured with the addition LC2 had 20.4% more chloride ions in their initial composition, respect to the specimens with Portland cement P35, factor that could have had an influence on the results. From the results it was determined that the specimens manufactured with the mineral addition LC2 managed to bind a chloride ions content 1.5 times higher than the specimens made with Portland cement.
Descripción
Palabras clave
Cemento Portland (CP), Fábrica de Cemento Siguaney, Protocolo STADIUM ®, LC2, Cemento Portland P35, Hormigones Prefabricados