Ingeniería Civil y Mecánica

URI permanente para esta comunidadhttp://repositorio.uta.edu.ec/handle/123456789/898

Examinar

Filtros

2024 - 20262

Ajustes

Tema: search.filters.subject.ASFALTO RECICLADO

Resultados de la búsqueda

Mostrando 1 - 2 de 2
  • Miniatura
    Item type:Ítem,
    Evaluación del efecto de los agregados de asfalto reciclado en las propiedades físico-mecánicas de las mezclas asfálticas en frío
    (Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil, 2026-07-03)
    Romero Carrera Cristal Monserrat
    ;
    Núñez Aldaz Galo Wilfrido
    ;
    Universidad Técnica de Ambato-Facultad de Ingeniería Civil y Mecánica-Carrera de Ingeniería Civil
    This research focused on evaluating the stability and flow of cold asphalt mixes using recycled asphalt aggregates (RAP) in the Marshall Method, with the aim of determining their technical viability as a sustainable alternative for road construction. The importance of the study lay in the need to reduce the consumption of virgin aggregates and utilize materials from the milling of deteriorated pavements, contributing to the conservation of natural resources and the reduction of environmental impacts. The methodology initially included the physical-mechanical characterization of recycled aggregates, new aggregates, asphalt cement, and asphalt emulsion using ASTM and INEN standardized tests. Subsequently, a conventional standard mix and an alternative mix with the addition of 20% RAP combined with 80% new aggregates were designed, achieving optimal particle size distribution according to the specifications of MOP-001-F-2002. In the design phase, an optimal net asphalt content of 6.0% was determined for both proposals. For the conventional mix, this represented 9.84% CSS-1h asphalt emulsion, while the recycled mix required only 8.70% new liquid emulsion due to the contribution of the pre-existing binder in the recycled material. Finally, the experimental results for stability, flow, bulk density, and voids were compared at their optimum points. The incorporation of 20% recycled aggregates resulted in a 20.03% reduction in stability and a 3.57% reduction in mix flow. Volumetrically, the addition of RAP caused a 2.3% increase in air voids, while bulk density decreased by 0.18%. It was concluded that the use of recycled aggregates in cold asphalt mixes is technically feasible and sustainable. Despite mechanical and volumetric variations, the recycled design meets the stability, flow, density, and void content requirements for the mineral aggregate established by current regulations, guaranteeing the structural integrity of the pavement and optimizing the consumption of new binder.
  • Miniatura
    Item type:Ítem,
    Análisis de asfaltos reciclados vs asfaltos conformados con lana de acero utilizando material asfáltico reciclado de la vía Guadalupe-Patate
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Civil, 2024-02)
    Cepeda Granda, Ana Belén
    ;
    Cañizares Proaño, Byron Genaro
    For the development of this research, the materials such as coarse and fine aggregate were obtained from the Las Viñas mine belonging to the company JEAL Constructions located in the city of Ambato. Laboratory tests were conducted to analyze their mechanical characteristics and determine that they comply with the standards. of respective quality for each of them. Likewise, the recycled asphalt material belonging to the Guadalupe – Patate road in the Pelileo canton was collected and its quality was determined, and it was decided to collect steel wool as a reinforcement material. Once the characteristics of the materials were determined, the specimens were prepared using the Marshall Method in compliance with the standards AASHTO T 245, ASTM D 1559 and AASHTO T 225, three briquettes of traditional asphalt for each percentage, three briquettes with additions of recycled asphalt in percentages of 20, 40 and 60 percent and three briquettes with the addition of steel wool in percentages of 0.5, 1 and 1.5 percent, for each asphalt cement content, which gives a total of 105 asphalt briquettes produced during the development of all research. At the end of the respective tests, a comparative analysis of the mechanical properties was conducted between traditional asphalt mixtures, with percentages of recycled asphalt and with the addition of steel wool, such as stability, flow, and percentage of voids, using tables and graphs.