Superpave System versus Marshall Design Procedure for Asphalt Paving Mixtures (Comparative Study)
Over 98% of paved highways in Jordan have a surface course where asphalt cement is used as the binder agent. The prevalence of these pavements is constructed with hot-mix asphalt concrete. Asphalt concrete is a mixture of binder and aggregate under specified volume parameters. Based on empirical evidence, the volume of air used in the mix design process is four percent. Under the performance grade specifications of the Superior Performing Asphalt Pavement (Super Pave) method of mix design the base grade of binder is selected based on the range of pavement temperatures expected for pavements service conditions (McLeod et al. 1956). Aggregates used in asphalt concrete in Jordan are mainly crushed limestone. The asphalt used is mainly the (60/70) penetration grade. The performance of asphalt surface roads is directly affected by the quality of the asphalt concrete. Several methods have been developed for determining the quantities of aggregate and asphalt cement used in the asphalt concrete such as Marshall, Hveem and SuperPave System (Foeter et al. 2009). This paper aims to compare between Marshall, Hveem and SuperPave System to show the difference between them.
