Abstract

RONDON QUINTANA, Hugo Alexander  and  REYES LIZCANO, Fredy. RESILIENT BEHAVIOR OF GRANULAR MATERIALS IN FLEXIBLE PAVEMENTS: STATE OF THE ART. Rev. ing. univ. Medellin [online]. 2007, vol.6, n.11, pp.65-90. ISSN 1692-3324.

When vehicles move on a pavement structure, they induce load cycles that generate resilient and permanent strains inside granular layers. Since the 60's, pavement engineering has developed studies in order to understand the elasto-plastic behavior that granular materials experiment on base and sub-base layers of flexible pavements. Most of the researches that have been made in this area have concentrated in studying their resilient behavior. A state of the art about the behavior of granular materials in flexible pavements is presented in two separate papers. This first paper tries on resilient stress-strain characteristics of such materials. The mathematical equations found in the literature to predict the resilient behavior are listed, and their advantages and shortcomings are reviewed. The permanent strain characteristics of unbound aggregates are considered in another paper.

Keywords : Resilient behavior; state of the art; granular materials; flexible pavements.

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