Ingeniería Civil y Mecánica
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Item Análisis del uso de ceniza de la hoja de Agave Americana (Cabuya) para la estabilización de suelo(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil., 2025-02) Torres Portero, Juan Carlos; Muyulema Muyulema, Danny GermanSoil is a fundamental component in civil engineering, since it provides a basis for the construction of highways, rural roads and other infrastructure. Therefore, it is essential to carry out detailed studies to evaluate its physical and mechanical characteristics. In case it does not meet the technical requirements, it is necessary to consider alternatives, such as its replacement or the addition of elements or materials that improve its mechanical properties. The influence of American agave leaf ash (CHA) on the physical and mechanical properties of three soil samples was analyzed. Quantitative methodology was used, which included data collection and laboratory tests, such as moisture content, granulometric analysis, determination of specific gravity, Atterberg limits, modified Proctor test and CBR test. The results indicated that, for sample M1 (poorly graded sandy soil, SP), from Cevallos canton, the CBR value increased to 43.16 percent with the addition of 5.22 percent CHA, although this improvement was not representative. For sample M2 (silty soil, SM), collected in the Ambato canton, the CBR increased to 39.32 percent, with the addition of 16.92 percent CHA, showing a substantial improvement. Finally, sample M3 (high plasticity clayey soil, CH), taken from Puyo canton, reached a CBR value of 22.35 percent with the addition of 24.84 percent CHA, reflecting a significant improvement in its mechanical properties. In conclusion, the inclusion of agave leaf ash improves the mechanical properties of certain types of soils. However, in sandy soils (sample M1) the increase is not significant enough, while for silty and clayey soils (M2 and M3), it is considered an alternative for their stabilization.Item Estudio del efecto de la adición de emulsión asfáltica en las propiedades físico – mecánicas de suelos granulares, para el diseño de pavimentos flexibles(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2022-01) Gavilanes Pozo, Erika Samantha; Portilla Yandún, Favio PaúlIn the present experimental investigation, an evaluation on the changes of the physicalmechanical properties of granular subgrade soils by adding asphalt emulsion in different percentages in order to stabilize the soils from Ambato was perfomed. To analyze these changes on soils´properties, samples have been taken from the parishes of Izamba, Montalvo and Juan Benigno Vela to carry out essays both in the field and on the laboratory to establish a comparative analysis of the achieved CBR values between the natural soil and the soil modified with asphalt emulsion; Furthermore, it was obtained Moisture Content, Field Density, Atterberg Limits, Specific Gravity, Granulometry and modified Proctor were obtained through laboratory essays. In addition to studying the changes in these properties, the results achieved for optimal humidity, maximum dry density and CBR of the modified samples were analyzed by adding asphalt emulsion at 0, 1, 3, 5 and 8 percent in order to establish the optimal percentage where the highest values of these properties are reached in the soils. With the data obtained, the design of flexible pavements for the soil in its natural state and the design for the stabilized soil were also been made with the propose to analyze and compare prices which are influenced by the thicknesses of each layer that are part of the pavement.Item Estabilización de suelos granulares de subrasante con finos de tereftalato de polietileno (PET), polipropileno (PP) y polietileno (PE)(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2021-03) Celi Yanchapanta, Kevin Adrian; Portilla Yandún, Favio PaúlThis document deals with an experimental research, focused on stabilizing one of the layers of the pavement (subgrade) of coarse soil-type, with the addition of Terephthalate polyethylene (PET), Polypropylene (PP) and Polyethylene (PE) particles. This stabilization is based on the comparative analysis of CBR between subgrade stabilized with PET/PP/PE particles, and subgrade in natural state. To carry out this project, were sampled three representative type of granular soils, located in the parishes of Montalvo, Juan Benigno Vela and Izamba, all of them in Ambato. After that, there was an analysis of tests in situ and laboratory corresponding to: Moisture Content, Field Density, Specific Gravity, Granulometry, Atterberg Limits, Modified Proctor and CBR. In the soil samples of the Proctor and CBR tests, it was added particles of PET/PP/PE in percentages of 0, 3, 6, 9, 12 and 15. The variations of the maximum dry density, optimum moisture content and CBR values were analyzed, finding optimal stabilization values for each soil sample. As a result, an economical technical comparison was conducted between two flexible pavement designs based on CBR of non-stabilized and stabilized subgrade soils. In this way it was observed the diminution of thicknesses in the layers of the flexible pavement structure for stabilized subgrade and how influences the cost of a road.