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- Title
Comportamiento de mezclas asfálticas densas a partir del ensayo de viga semicircular simplemente apoyada.
- Authors
PAREDES CHÉRREZ, LUIS ALBERTO; REYES ORTIZ, ÓSCAR JAVIER; CAMACHO TAUTA, JAVIER FERNANDO
- Abstract
Mechanic characterization of asphalt mixtures uses to be expensive and time consuming. How- ever, some researches try to correlate such properties by simple, fast and less expensive tests. The main goal of this investigation consisted into establish the viability of use the simply supported semicircular beam (SCB) to characterize dense asphalt mixtures designed under specifications of the Instituto de Desarrollo Urbano (IDU) and the Instituto Nacional de Vías (Invias). The study started with the production of SCB specimens using different materials (soil aggregate, asphalt, asphaltite, reclaimed asphalt pavement and lime) and compaction techniques (vibration and gyratory compaction). The SCB tests were carried at a velocity of 1mm/min and 15°C of temperature. From these tests, different parameters were obtained based on the definition in the Fénix test (maximum load, displacement at maximum loading, energy released during the cracking process, traction stiffness index and tenacity index). From the results, it was found that the SCB tests were useful as a tool to characterize the mechanical properties of the asphalt mixtures. This conclusion is applicable for all kind of mixtures tested, ageing periods, compaction level and filler content.
- Subjects
ASPHALT; MIXTURES; ENERGY dissipation; GIRDERS; MINERAL aggregates; REPURPOSED materials; COMPACTING; MECHANICAL loads
- Publication
Tecnura, 2014, Vol 18, Issue 41, p103
- ISSN
0123-921X
- Publication type
Article
- DOI
10.14483/udistrital.jour.tecnura.2014.3.a08