Ingeniería Civil y Mecánica

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Subject: search.filters.subject.ASFALTO MODIFICADO

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    Análisis comparativo de las propiedades mecánicas de mezclas asfálticas con la adición de material PET (polietileno tereftalato), la adición de caucho de nitrilo y pavimento asfáltico tradicional para el mantenimiento vial en grietas longitudinales y transversales
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2023-07) Herrera Moya, Priscila Monserrath; Frías Torres, Alex Xavier
    Currently worldwide environmental pollution has been increasing due to poor waste management, one of the main pollutants are polymers found in materials such as plastics and rubber. In this work, the conventional asphalt mix was modified with the implementation of non-biodegradable recycled material, improving some of the mechanical properties of asphalt, so as to promote the reuse of commonly consumed materials. Conventional asphalt briquettes and asphalt modified with PET (Polyethylene Terephthalate) recycled material and modified with Nitrile Rubber were made in order to analyze their mechanical properties and performance compared to conventional asphalt mixtures, giving these materials a new use. . The behavior of a modified asphalt mixture with the addition of 5, 10, 15 and 20 percent of PET was analyzed, in addition to one modified with 2, 3, 4 and 5 percent of Nitrile Rubber for which ASTM D 1559 and AASHTO T 225; 36 samples were prepared, of which 12 correspond to conventional asphalt mixtures and 24 to modified mixtures, once analyzed the optimum percentage of asphalt and polymer was established, finally through a comparative analysis of the results it was determined that the addition of these materials Several parameters of the asphalt mix improve compared to the conventional one, thus being the sample added with nitrile rubber the best option.
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    Análisis del efecto de la adición de partículas de tereftalato de polietileno (PET) en mezclas asfálticas en frío
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2023-01) Gavilanes Loor, Shumacher Duvalier; Portilla Yandún, Favio Paúl
    Due to an increase in environmental pollution regarding the use of plastic, we proceeded to conduct this research where recycled plastic was incorporated into a cold asphalt mixture in order to identify its mechanical behavior. This research was based on incorporating recycled plastic into a cold asphalt mix using stone aggregates from the Ambato canton and comparing its mechanical properties with a traditional asphalt mix. The behavior of an asphalt mixture was studied by progressively modifying it with the addition of the following percentages of PET of 3, 6, 9, 12, 15 percent by weight; ASTM D 1559 and AASHTO T 225 were used for this purpose; 100 samples were made, of which 20 corresponded to conventional asphalt mixtures and 80 to mixtures with different percentages of (PET/PE/PP). Finally, the maximum and optimum percentage of recycled polymers to be added to the asphalt mixes was established in order to meet and improve the design requirements according to the regulations. It was determined that in cold asphalt mixes the quality of the pavement does not improve in high traffic, but for medium and light traffic it presents flexible and durable characteristics, thus obtaining an optimum percentage of polymer addition for the design of flexible pavements that can be used in the country's roads.