Ingeniería Civil y Mecánica
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Item Estudio de la resistencia a compresión del hormigón simple con reemplazo parcial de puzolanas obtenida de la calcinación de rastrojo de maíz(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2024-02) Núñez Arellano, Wilson Mauricio; Ureña Aguirre, Maritza ElizabethIn the present experimental work, the reduction of cement is investigated since it produces CO2 emanation in manufacturing, taking as an alternative a partial replacement with corn stover ashes for the production of simple concrete, with the purpose of increasing the resistance and thus reducing pollution. The corn stover was calcined at controlled temperatures between 500 to 750 degrees Celsius, the ash was obtained, the tests were carried out to know the physical and mechanical properties of the aggregates, corn stover ash and cement, using NTE INEN standards. It was shown that the materials were optimal, then the dosage was calculated for simple concrete and with 6, 8, 10 and 12 percent ash. 12 test tubes were made for each dosage for time intervals of 7, 14 and 28 days, giving us a total of 60 test tubes. The compression tests of the previously selected specimens were continued at 7, 14 and 28 days of curing. The concrete specimens with 6 percent ash presented positive results at 28 days as they reached a resistance of 256.77 Kg/cm2, which exceeds the resistance obtained from simple concrete of 246.00 Kg/cm2, in contrast, the resistance of 8, 10 and 12 percent with values of 210.93, 207.27, 206.89 Kg/cm2 respectively, had a significant decrease, these values do not reach the limit lower design resistance of 228 Kg/cm2. Finally, it was shown that the greater the amount of ash, the lower the strength of the concrete.Item Estabilización de suelos de bases de agregados de clase 3 y 4 con polvo cerámica como reemplazo parcial del cemento(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2023-01) Trávez Bastidas, Diego Fernando; Frías Torres, Alex XavierAs the population grows, its construction waste does the same, an example of this is the waste from sanitary slabs which, when it presents faults or imperfections, are discarded and not used. Having pozzolanic properties such as Aluminum, Calcium and Silicon, it was thought to incorporate this material in the stabilization with cement bases of aggregates class 3 and 4, since a partial replacement of cement would reduce the impact in terms of construction and economy. Initially, we proceeded with the collection of samples of aggregates class 3 and 4 so that we could know about their mechanical properties before altering them either with cement or ceramic powder. Ceramic dust was obtained from the sanitary slab discarded from the FV industry (Franze Viegener), and then incorporated into the stabilization of these aggregates, where the percentage of cement was decreased and the percentage of ceramic dust was increased according to the regulations (MOP-001-F002). Finally, we obtained the mechanical properties of the samples altered mainly the CBR and proceeded with the design of the pavement structure and its budget based on already known studies of the “Asfaltado de la vía San Rafael, San Juan, Chan, E35, Parroquia Eloy Alfaro cantón Latacunga Provincia de Cotopaxi”. Where vehicle couting was used to find the equivalent axels.Item Estudio de la correlación de las propiedades físicas y mecánicas de aluminosilicato de la cordillera Chongón-Colonche como sustituto parcial del cemento(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2022-09) Viteri Acosta, Alvaro Daniel; Ureña Aguirre, Maritza ElizabethThe cement industry is responsible for producing tons of carbon dioxide into the atmosphere and is one of the industries that generates the most pollution on the planet. Currently, supplementary cementitious materials (SCM) have been studied to help reduce this problem, one of them are aluminosilicates, better known as natural zeolites. In this work, data was compiled from previous works done by authors of the institution of characterization of physical properties such as density, fineness, specific surface and also morphological and chemical properties such as microscopy, determination of elements and oxides present in GU and IP cement, and some samples of the Chongón-Colonche mountain range aluminosilicates which are ZA, ZZ, ZI, ZV, ZX, ZCr, ZC, ZR and ZCa. Data was also collected at 7, 14, 28 and 56 days and mechanical properties such as compressive strength, indirect tensile strength and water penetration under pressure of concrete specimens with partial substitution of ZZ aluminosilicate in percentages of 10, 15 and 20 per cent were tested at 267 days, for the preparation of dynamic tables and graphs that serve us for a better analysis of the properties. The best aluminosilicate ZZ partial substitution is 15 per cent for concretes that don't require high strengths because at 28 days the compressive strength reaches 18.6 MPa and for concretes that need impermeability because at more aluminosilicate substitution the depth of water penetration decreases, at more time lapse mechanical properties are better.Item Análisis comparativo de las propiedades mecánicas de un hormigón hidráulico (TIPO GU) de F´C = 240 kg/cm2 con diferentes dosificaciones de silicato de sodio y nanosílice utilizando agregados de la mina Santa Isabel ubicado en la via Shell – madre tierra, ciudad de Puyo – provincia de Pastaza(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2020-10) Caiza Yungán, Jefferson Raúl; Suquillo Ronquillo, Betzabeth JesseniaThis paper has been carried out in order to determine the influence of sodium silicate and nanosilica as partial substitutes for cement on the compressive strength of concrete and its performance in the mix design. Initially it was carried out the analysis of the physical-mechanical properties of the stone aggregates from the Santa Isabel Mine located on the Shell - Madre Tierra road in Puyo city, Pastaza Province, from which good results were obtained that comply with NTE INEN and ASTM standards. After an investigation of these two additions, the standard concrete dosage of compressive strength of 240 kilograms per square centimeter was carried out, and it was used as a reference for partially replacing the cement with sodium silicate in concentrations at 4 per cent, 8 per cent and 12 per cent and nanosilica at 1 per cent, 3 per cent and 5 per cent. The respective specimens were prepared with each of the additions and tested for compression at 7, 14 and 28 days. It was determined that the optimum addition of sodium silicate was 8 per cent and of nanosilica was 3 per cent with compressive strengths of 276.58 kilograms per square centimeter and 355.31 kilograms per square centimeter respectively, both measured at 28 days, denoting a considerable increase in compressive strength from the reference value. After analyzing the variables of resistance, settlement, consistency and workability, it was determined that the best performing addition and with economic savings in construction is the addition with 3 per cent of nanosilica.Item Análisis comparativo de la edad vs la resistencia a la compresión del hormigón elaborado con diferentes marcas de cementos portland(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2016) Martínez Valle, Lorena Jacqueline; Navarro Peñaherrera, Carlos PatricioItem Estudio de hormigones impermeables, según el origen local de materiales y la adición de aditivo impermeabilizante(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2016) Rodríguez Villacís, Santiago Ismael; Medina Robalino, Wilson SantiagoItem Comportamiento del hormigón añadido metacaolín como sustituto del cemento, utilizando los agregados existentes en la provincia de Pastaza(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2016) Rodríguez Guevara, Roberto Carlos; Ureña Aguirre, Maritza Elizabeth