Abstract:
Semarang, as one of cities located on the North Coast of Java Island, experienced tidal inundation for
years. The presence of inundation has adverse effect on road infrastructure, especially on coastal
arterial roads, which most of them made of mixture with conventional asphalt. To overcome this
problem, it was proposed to use polymer modified asphalt (PMA) for the mixture. This study was
carried out to evaluate the durability of the mixture with PMA that continuously immersed in the tidal
water, to simulate the occurrence of some road infrastructure in Semarang which was inundated after
tidal events. For this purpose, five immersion periods and three kinds of tidal inundation were
selected. To evaluate the durability of the mixtures after immersion, two durability indices were used.
The results showed that the water pressure (during immersion) could be one of the main causes of
strength loss of the mixtures; however, if the water consists of certain chemical compound at sufficient
amount, it could also contribute in reducing greatly the durability of the mixture.
