Thesis Estudio de comportamiento a fatiga de mezclas Sma de autopista Central y autopista del Maipo
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Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Program
Construcción Civil
Departament
Campus
Campus Casa Central Valparaíso
Abstract
La presente memoria para optar al título de Constructor Civil, es ejecutada en base al proyecto de desarrollo de estudios FONDEF D09I1174: “Desarrollo de Materiales para Recapados Asfálticos Utilizados en la Rehabilitación de Pavimentos deteriorados”. El proyecto se realiza en el departamento de Obras Civiles de la Universidad Técnica Federico Santa María haciendo uso de las dependencias y equipos de LEMCO (Laboratorio de Ensaye de Materiales y Control de Obras). Como parte del proyecto fue realizado un estudio de comportamiento a fatiga de mezclas bituminosas SMA, procedimiento basado en las normas AASHTO T321, 2007 y UNE-EN 12697-24. El Presente trabajo tiene por objetivo dar a conocer los resultados obtenidos en ensayos de viga a flexión, con carga en cuatro puntos de tipo sinusoidal, sin periodos de reposo, a deformación controlada, bajo una frecuencia de 10 [Hz] y a una temperatura de 20°C. El criterio de falla adoptado durante los ensayos corresponde a la cantidad de ciclos de carga necesarios para que la mezcla alcance la reducción del 50% de su rigidez inicial. Los ensayos de viga a flexión se realizan a probetas prismáticas confeccionadas y cortadas en LEMCO a partir de mezclas SMA, extraídas en las dependencias de Constructora Asfalcura directamente desde camiones de transporte encargados de llevar el material hacia pistas de prueba en Autopista Central y Autopista del Maipo. Para cada mezcla destinada a cada autopista, se realizan(...).
This thesis to obtain the title of Civil Constructor was executed under the FONDEF project D09I1174, "Development of materials for Asphalt resurfacing used in the rehabilitation of deteriorated pavements". The project was carried out at the Civil Works Departament of the Federico Santa Maria Technical University using the LEMCO (Essay Laboratory Materials and Construction Control) equipment and facilities. As part of the project was made a study of fatigue characterization of the SMA bitumen mixtures, procedure based on the AASHTO T321, 2007 and UNE-EN 12697-24 standards.The aim of this thesis is to present the results obtained from beam tests in four point bending sinusoidal loading, without resting periods to constant strain, under a 10 [Hz] frequency and 20°C temperature. The failure criteria adopted corresponds to the necessary loading cycles for the mixture to reach the 50% of his initial flexural stiffness. This essay was made in beam especimens made and cut in LEMCO, from SMA mixtures samples extracted from Asfalcura Construction Company, directly from the transport trucks and carried to test tracks in the Central Highway and the Maipo Highway. For each type of mixture belonging to each highway(...).
This thesis to obtain the title of Civil Constructor was executed under the FONDEF project D09I1174, "Development of materials for Asphalt resurfacing used in the rehabilitation of deteriorated pavements". The project was carried out at the Civil Works Departament of the Federico Santa Maria Technical University using the LEMCO (Essay Laboratory Materials and Construction Control) equipment and facilities. As part of the project was made a study of fatigue characterization of the SMA bitumen mixtures, procedure based on the AASHTO T321, 2007 and UNE-EN 12697-24 standards.The aim of this thesis is to present the results obtained from beam tests in four point bending sinusoidal loading, without resting periods to constant strain, under a 10 [Hz] frequency and 20°C temperature. The failure criteria adopted corresponds to the necessary loading cycles for the mixture to reach the 50% of his initial flexural stiffness. This essay was made in beam especimens made and cut in LEMCO, from SMA mixtures samples extracted from Asfalcura Construction Company, directly from the transport trucks and carried to test tracks in the Central Highway and the Maipo Highway. For each type of mixture belonging to each highway(...).
Description
Catalogado desde la version PDF de la tesis.
Keywords
Pavimentos asfálticos, Mezclas SMA, Fatiga de materiales, Ensayos de flexión, Control de calidad
