Examinando por Materia "Marshall"

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  • Miniatura
    Ítem
    Early Neoclassical views on Monopoly: the Cournotian heritage
    (Universidad EAFIT, 13/04/2010) Álvarez, Andrés; Universidad Nacional de Colombia
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    Publicación
    Mezcla en frío para reparaciones, producida con carpeta asfáltica reciclada, emulsión asfáltica y cemento hidráulico
    (Universidad EAFIT, 2025-06-20) Cajiao Pérez, Giselle Vanessa; Vidal Valencia, Julián
    In the department of Cesar, Colombia, there are roads managed by the National Road Institute (INVIAS) that are in fair condition due to structural and functional failures caused by traffic loads, ambient temperature, and lack of maintenance. Given the high operating costs, it is evident that the deterioration of the asphalt wearing course must be rapidly reduced, both for user safety and to preserve the lifespan of the pavement structure. Therefore, a cold asphalt mix was prepared with RAP (Reclaimed Asphalt Pavement) as an alternative aggregate, adding slow-setting cationic asphalt emulsion (CRL-57) and general-purpose hydraulic cement (UG). Different material dosages were used using the Marshall method of mix design, with the goal of establishing an optimal dosage, evaluating their physical and mechanical properties, and performing test and monitoring repairs to demonstrate their durability. These repairs did not exceed one month and have now gone six (6) months without showing any deterioration. Laboratory tests of granulometry and asphalt content of the RAP and Marshall method on the test specimens were carried out in the pavement laboratory of the EAFIT University.