Browsing by Author "Montesdeoca Chafla Camila Monserrath"

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    Evaluación del efecto de los agregados de asfalto reciclado en las propiedades físico-mecánicas de las mezclas asfálticas en caliente
    (Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil, 2026-07-03) Montesdeoca Chafla Camila Monserrath; Acosta Lozada Rodrigo Iván
    This research evaluated the effect of incorporating recycled asphalt pavement (RAP) aggregates on the physical-mechanical and volumetric properties of hot mix asphalt using the Marshall method. The study was conducted using a comparative experimental approach structured in three phases: characterization of the stone materials; design of conventional and modified asphalt mixtures using the Marshall method; and analysis of the properties in relation to the optimal asphalt cement content, in accordance with standard MOP-001-F-2002. For the experimental work, stone aggregates were collected from the Kumochi Mine, recycled stone aggregates (RAP) obtained from the milling of the Jaloa–El Guasmo road in Quero Canton, and AC-20 asphalt binder from the JEAL Construcciones plant. Two types of mixtures were designed: a conventional mixture consisting of 100% new aggregates and a modified mixture containing 20% RAP, both of which meet the requirements and demonstrate feasibility for use in the design of asphalt pavements for heavy traffic. This study addresses the need to optimize material resources and reduce the environmental impact caused by the extraction of virgin aggregates for road infrastructure without altering its structural design. The percentage of residual asphalt binder in the recycled aggregates was determined, yielding a value of 5.69%, which intrinsically translates to 1.14% equivalent to 20% RAP in the mixture. Using the Marshall method, the optimal asphalt binder content was determined for both mixtures, yielding a value of 6.20%. Analysis of their properties concluded that the incorporation of 20% RAP results in increased stability compared to the conventional mixture. Conversely, the flow decreased but remains within the range required by MOP-001-F-2002, which indicates that the mixture is sufficiently rigid to prevent rutting while resisting plastic deformations caused by traffic loads. It is concluded that the incorporation of recycled material improved the performance of its properties in the mix design, making it technically viable and capable of withstanding traffic loads.