Ingeniería Civil y Mecánica

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Author: search.filters.author.Manosalvas Ramos, Jefferson IsmaelSubject: search.filters.subject.HORMIGÓN

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    Determinación de una constante para el cálculo del módulo de elasticidad estático del hormigón con agregados de las minas GADMFO: La Conde, Guayusa y Punino 2, del cantón Francisco de Orellana, provincia de Orellana
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2019) Manosalvas Ramos, Jefferson Ismael; Medina Robalino, Wilson Santiago
    The study began with the sampling of the aggregates of the three mines, under the INEN 695 standard and its subsequent reduction to test size according to INEN 2566; The characterization tests of the aggregates were then carried out to establish their suitability to be used in the concrete indicated in INEN 872; In addition to obtaining the real density of the INEN 156 cement. Based on the above, mixtures for compressive strengths of concrete of 21 and 24 Mpa were carried out, using the optimum density method. For the final dosages, a total of 168 cylindrical specimens according to INEN 3124 were performed, with the corresponding tests in the fresh state such as: INEN 1763 sampling, INEN 1578 settlement, density, performance and air content INEN 1579; as well as in a hardened state obtaining the compressive strengths INEN 1573 at ages of 7, 14, 21 and 28 days, allowing to graph the age curves vs. resistance to compression and stress vs deformation of the concrete, finally the determination of the modulus of static elasticity (MEE) was performed in a total of 72 specimens following the regulations of ASTM C469. Based on this, the following constants are proposed for your local application depending on the origin of the material and equation used, thus having the values of 0.0408, 0.0356, 0.0445 and 0.0439 for the mines of Guayusa shaken, crushed, La Conde and Punino respectively for replacement in the equation (15) the value of 0.043 and the values of 4850, 4140, 5275 and 5190 in the same way in the equation (16) both in MPa.