Abstract

RONDON QUINTANA, Hugo Alexander  and  REYES LIZCANO, Fredy Alberto. Mechanical properties evaluation of a hot asphalt mixture modified with asphaltite. rev.ing. [online]. 2012, n.36, pp.12-19. ISSN 0121-4993.

The strength under monotonic load, resilient modulus and rutting were evaluated on a hot-mix asphalt (HMA) modified with a natural asphaltite. Additionally, the influence of the environmental conditions of Bogotá D.C., was evaluated during two years on the mechanical properties of a modified asphalt mixture. The results show that the mechanical properties evaluated were better for the HMA mixes modified in compared with those with neat asphalts. The asphaltite produces higher mechanical resistance in HMA. The general tendency of the mixtures is increase the modulus with time due to aging of the asphalt cement. However, modified mixtures with AC 60-70, decrease in stiffiness during the first months.

Keywords : Asphaltite; modified Asphalt; hot-mix asphalt (HMA); mechanical properties.

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