UTN- FRC -Producción Académica de Investigación y Desarrollo - Artículos

Permanent URI for this collectionhttp://48.217.138.120/handle/20.500.12272/2453

Browse

Filter results by typing the first few letters
Now showing 1 - 3 of 3
  • Thumbnail Image
    Item
    Behavior of Rigid Circular Shallow Foundations on Geogrid-Reinforced Sand.
    (Electronic Journal of Geotechnical Engineering., 2015) Useche Infante , Danny José; Aiassa Martínez , Gonzalo Martín; Arrúa , Pedro Ariel
    This paper presents the effect of two types of geogrid inclusion on the bearing capacity of a rigid circular footing resting on sand. The improvement achieved with uniaxial and biaxial geogrids is compared. Load tests were performed for a broad series of conditions, including unreinforced cases, was tested by varying variables such as geogrid type, number of geogrid layers, depth to topmost layer of geogrid and the case when the geogrid is anchored to the test mold. The results were then analyzed to find both qualitative and quantitative relationships between the bearing capacity and the geogrid variables. The results of the investigation indicate that both, the settlement and the bearing capacity, of circular footing resting on sand, can be enhanced by the presence of geogrid layers. The improvement in stress-strain behavior of the geogrid-reinforced sand was found to be strongly dependent on the number of geogrid layers, vertical distance between the base of the foundation and the first layer of geogrid and the tensile strength of geogrid reinforcement.
  • Thumbnail Image
    Item
    Calibración de Modelos Hidromecánico en Mezclas de Loess y Bentonita.
    (Revista Tecnología y Ciencia., 2016) Alercia Biga , Carolina; Arrúa, Pedro Ariel; Aiassa Martínez , Gonzalo Martín; Eberhardt , Marcelo
    Los suelos loessicos de la Ciudad de Córdoba, constituyen uno de los materiales más importantes empleados en obras de ingeniería especialmente en obras viales. Se han realizado importantes estudios investigando sus propiedades geotécnicas. En este trabajo, se realizaron ensayos de compresión no confinada y ensayos de infiltración mediante el empleo de un permeámetro a pared flexible. Se realizaron mezclas de suelo loessico con adición de bentonita en distintos porcentajes. Se evaluó el contenido de humedad, peso unitario seco y contenido de bentonita en las muestras remodeladas. Se compararon los resultados obtenidos experimentalmente con los modelos propuestos mediante formulaciones matemáticas. Los resultados muestran que es posible lograr una aproximación entre el comportamiento hidromecánico teórico obtenido mediante la modelación y calibración de funciones racionales respecto del comportamiento empírico obtenido como resultado de ensayos en mezclas de suelo loessico estabilizadas con bentonita.
  • Thumbnail Image
    Item
    Effect of geogrid reinforcement on interface for a stratified embankment.
    (GEOMATE, 2016) Useche Infante, Danny José; Aiassa Martínez , Gonzalo Martín; Arrúa , Pedro Ariel; Eberhardt , Marcelo
    Reinforced granular embankments are often placed on soft soil strata for an efficient and economical transfer ofsuperstructure load. This paper describes laboratory tests on circular footing supported on unreinforced and geogrid-reinforced granular soil. Two types of geogrid layer, uniaxial and biaxial geogrid, were placed at the interface of sub-base soil and granular base of an embankment formed on soft ground to support shallow foundations. Load test were conducted with the aim to determine the performance improvement of the circular footing due to the provision of both types of geogrid reinforcement in the soil. Also studied the effect produced by anchoring geogrid layer at the edge of the mold sample. The results showed that the inclusion of a geogrid layer at the interface of sub-base soil and granular base increase the magnitude of the footing bearing capacity and decreases the settlement of the system. The study shows that the type of geogrid used has direct influence on stress-strain behavior of soil-geogrid system and better results occurred when the geogrid was anchored to test mold.