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Influencia de la granulometría en la resistencia al ahuellamiento de mezclas asfálticas

Authors: Oscar Reyes-Ortiz; Universidad Militar Nueva Granada; Javier Camacho-Tauta;

Influencia de la granulometría en la resistencia al ahuellamiento de mezclas asfálticas

Abstract

The geotechnic engineering research group of the Universidad M. Nueva Granada, carried out a research about the performance of different bituminous mixes under the wheel tracking test when their gradations changes in the upper, middle and lower layer. Two sets of mixes were studied belonging to the Instituto Nacional de Vias (INVIAS) and the Instituto Distral Urbano (IDU). Previous testing, the granular material and the bitumen were studied in order to determine their properties, and the optimum rate of binder was determined using the Marshall test. Finally, specimens were made following the specifications found in the characterization tests and the wheel tracking test was applied. As a result, the only gradation that satisfies the specifications regarding the deformation velocity is the MD10. Furthermore, it has been found that the rutting is strongly related with the gradations and the compaction energy.

El grupo de investigación de Geotecnia de la Universidad Militar Nueva Granada adelantó una investigación para determinar la incidencia en el ahuellamiento de mezclas asfálticas del Instituto Nacional de Vías (INVIAS) y el Instituto Distrital Urbano (IDU), al variar su granulometría en la franja superior, inferior y media. El estudio inició con la caracterización de los materiales (asfalto y granular), seguido de la determinación del porcentaje óptimo de asfalto por el Ensayo Marshall. Por último, se construyeron muestras con las diferentes franjas granulométricas para evaluar la resistencia al ahuellamiento con los contenidos de asfaltos óptimos. Entre los resultados encontrados se determinó que la deformación permanente está directamente relacionada con las franjas granulométricas y la energía de compactación y que, según la normativa, la velocidad de deformación solo la cumple la granulometría MD10.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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