A New Method for Highway Flexible Pavement MIX Design: Superpave (original) (raw)

Marshall method is widely used for bituminous mixture design in many countries including Turkey. However, Marshall method cannot fully emulate the compaction process, carried out by rollers in field, through hammering. Besides, since local climatic conditions and temperature changes are not considered thoroughly, pavements designed by this method exhibit inferior performance than expected. Pavements constructed utilizing by Marshall method performed well during 1960’s when traffic loads were light, however, with increasing traffic loads the problem of rutting was detected even on structurally sufficient pavements. In order to improve performance of bituminous mixtures, several studies were initiated in different countries such as the United States, (US), France, United Kingdom (UK), Austria, Australia, Norway and Finland. Strategic Highway Research Program completed in the US, yielded a new method for bituminous mixture design called SUPERPAVE (SUperior PERforming Asphalt PAVEments)...