Comportamiento de una Mezcla Densa en Caliente Elaborada con Asfaltos Modificados con Asfaltita

  • Hugo A. Rondón-Quintana Universidad Católica de Colombia, Bogotá
  • Fredy A. Reyes Pontificia Universidad Javeriana, Bogotá
Keywords: Modified Asphalt, hot dense mix, asphaltite.

Abstract

Laboratory tests were used to evaluate the effect on the mechanical properties of a hot asphalt mix (MDC-2 as per INVIAS, 2007 specifications) due to the addition by wet way of a natural asphaltite from the San Alberto Mine (Santander, Colombia). The strength under monotonic load, resilient modulus and rutting were evaluated. Two asphalt cements (CA) were used, CA 80-100 from the Barrancabermeja refinery (Colombia) and CA 60-70 from Apiay (Colombia). The results show that the mechanical properties evaluated were higher for the MDC2 mixes modified with asphaltite compared with mixtures with asphalts without additives. Additionally penetration tests at different temperatures and softening points were conducted on asphalt cementswith and without additive. The asphaltite produces higher penetration resistance and lower thermal flow susceptibility.

Author Biographies

Hugo A. Rondón-Quintana, Universidad Católica de Colombia, Bogotá
Ingeniero Civil, Magíster en Ingeniería Civil y Doctor en Ingeniería. Vicedecano de Investigaciones, Facultad de Ingeniería, Universidad Católica de Colombia, Bogotá
Fredy A. Reyes, Pontificia Universidad Javeriana, Bogotá
Ingeniero Civil, Magíster en Ingeniería Civil y Doctor en Ingeniería. Director Maestría en Ingeniería civil, Facultad de Ingeniería, Pontificia Universidad Javeriana, Bogotá
How to Cite
Rondón-Quintana, H. A., & Reyes, F. A. (2009). Comportamiento de una Mezcla Densa en Caliente Elaborada con Asfaltos Modificados con Asfaltita. TecnoLógicas, (22), 141-161. https://doi.org/10.22430/22565337.224

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Published
2009-06-27
Section
Articles