Fabricación de hormigones con cemento de bajo carbono (LC3) en función de la NC 120:2014
Fecha
2018-06
Autores
Cuevas Rodríguez, Aisbel Leandro
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Editor
Universidad Central “Marta Abreu” de Las Villas. Facultad de Construcciones. Departamento de Ingeniería Civil.
Resumen
La presente investigación muestrael procedimiento desarrollado para laelaboración de hormigones con diferentes dosificaciones (H1, H2, H3, H4) según los niveles de agresividad atmosférica establecidos en NC 120:2014 “Hormigón hidraúlico— Especificaciones” así como los resultados obtenidos en los ensayos realizados. El trabajo comenzó con la optimizaciónycaracterización delos áridosprocedentes de la cantera remolida “Mariano Pérez Balí” (El Purio). Luego se pasó a la realización de probetas que responden a tres diseños de mezclas donde se varían parámetros como contenido de cemento y relación agua/cemento según lo establecido en la norma antes mencionada.Se evalúael comportamientoreológico yfísico-mecánico de hormigones en estado fresco yen estado endurecido, para ello se realizaron los siguientes ensayos: Determinación del asentamiento por el cono de Abrams y resistencia del hormigón en estado endurecido a 3, 7 y 28 días de curado. Los hormigones fueron elaborados con cemento de bajo carbono (LC3) con sustitución del clínquer hasta un 50 %, de arcillas calcinadas y calizas, y los patrones, confeccionados con cementoPortland35 (P35).Además,se evalúa la influencia de curado para le serie H1 tanto en los hormigones patrones como en los elaborados con LC3.
The present investigation shows the developed procedure for the elaboration of concretes with diferent dosages (H1, H2, H3, H4) according to the levels of atmospheric agressiveness established in the NC 120:2014 Hidraulic Concrete Specifications, as well as the results obtained in the tests. The work began with the optimization and characterization of aggregates from the Mariano Pérez Balí (El Purio) remuced quarry. Then we went to the realization of test pieces that respond to there designs of mixtures where parameters vary as cement content and water (cement ratio as established in the aforementioned standard. The rheological and physico mechanical behavior of concretes in fresh and hardened state is evaluated, for which the following tests were carried out: Determination of the settlement by the Abrams cone and strength of the hardened concrete at 3, 7 and 28 days of curing. The concretes were made with low carbon cement (LC3) with substitution of the clínquer up to 50%, of calcined clays and limestones and the patterns, made with Portland cement 35 (PP35). In addition, the influence of curing for the H1 series is evaluated in both the standard concretes and those made with LC3.
The present investigation shows the developed procedure for the elaboration of concretes with diferent dosages (H1, H2, H3, H4) according to the levels of atmospheric agressiveness established in the NC 120:2014 Hidraulic Concrete Specifications, as well as the results obtained in the tests. The work began with the optimization and characterization of aggregates from the Mariano Pérez Balí (El Purio) remuced quarry. Then we went to the realization of test pieces that respond to there designs of mixtures where parameters vary as cement content and water (cement ratio as established in the aforementioned standard. The rheological and physico mechanical behavior of concretes in fresh and hardened state is evaluated, for which the following tests were carried out: Determination of the settlement by the Abrams cone and strength of the hardened concrete at 3, 7 and 28 days of curing. The concretes were made with low carbon cement (LC3) with substitution of the clínquer up to 50%, of calcined clays and limestones and the patterns, made with Portland cement 35 (PP35). In addition, the influence of curing for the H1 series is evaluated in both the standard concretes and those made with LC3.
Descripción
Palabras clave
Niveles de agresividad atmosférica, Reológico, Físico-mecánico, Asentamiento, Resistencia, Hormigón