Ingeniería Civil y Mecánica

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Has files: YesSubject: search.filters.subject.HORMIGÓN ESTRUCTURAL

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    Análisis teórico-experimental de la resistencia a la compresión del hormigón y su influencia en el módulo de elasticidad estático en el cantón Santo Domingo de los Colorados, provincia de Santo Domingo de los Tsáchilas
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2021-09) Chacón Santos, Víctor Steve; Guevara Robalino, Jorge Javier
    This research work was carried out by taking samples of stone materials from the "Brisas del Toachi" and "Copeto" mines using INEN 695 standards, then a sample reduction was made according to INEN 2566, continuing with the investigation of some physical mechanical characteristics indicated in INEN 872 in order to make a dosage for a structural concrete and determine the actual density of cement using INEN 156. The mix design was made for each mine with its respective dosage using the method of optimum densities for concrete compressive strengths of 210 and 240 kilograms over square centimeters. Once the dosages were obtained for each mine, concrete specimens were made for their respective curing using INEN 3124 standard; fresh concrete tests were carried out, such as: sampling INEN 1763; density, air content and yield INEN 1579, settlement INEN 1578; hardened concrete tests were carried out to determine the compressive strength at 3, 7 and 28 days INEN 1573. With this we have access to information that allows us to interpret and graph these values for a better understanding and analysis of them. Finally, the experimental MEE is determined by using the ASTM C469 standard and with this, the use of values for the factors exposed in the ACI 318-14 standard and its correct adaptation according to the use of the materials of the mines studied is proposed.
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    Análisis del módulo de elasticidad estático del hormigón estructural en base a su resistencia a la compresión, fabricado con materiales de las minas Trópico de Capricornio y Santa Isabel, ubicadas en el sector El Barranco cantón Mera en la provincia de Pastaza
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2020-09) Flores Medina, Pablo Xavier; Medina Robalino, Wilson Santiago
    The present experimental work began with the sampling of the aggregates of the two mines, following the guidelines of INEN 695 and their subsequent reduction to test size according to INEN 2566; Therefore, arid characterization studies were developed to decree their suitability to be used in structural concrete identified in INEN 872; in addition to achieving the actual density of INEN 156 cement. Based on the above, the design of mixtures with their respective dosage was developed for the compression resistances of the 21 and 28 Mpa concrete, with the help of the optimal density method. A single dosage was used because in test trials if they achieved the expected resistances; a total of 84 specimens were then tested according to INEN 3124;with their respective fresh trials such as: INEN 1763 sampling, density, air content and INEN 1579 performance, INEN 1578 settlement; as well as in hardened state obtaining the resistances to INEN 1573 compression at ages 7, 14, 21 and 27 days, making it possible to graph the curves age vs resistance to compression and stress vs deformation of structural concrete. Finally, the static elasticity modulus of concrete was determined according to ASTM C469 and accordingly the constants are proposed for local adaptation depending on the origin of material equation used that is presented in the present experimental work.