The effect of water tidal flood towards the durability of asphalt concrete wearing course (ac-wc) mixture

This study aims to determine the durability of the Asphalt Concrete-Wearing Course (AC-WC) using conventional asphalt and polymer asphalt due to tidal immersion in sea water. This study uses variations in asphalt content of 4.5%, 5%, 5.5%, 6%, and 6.5% of the total weight of the aggregate. The polymer used in this research is Styrene Butadine Styrene (SBS) elastomer polymer with a concentration of 2% and 4% by weight of asphalt in the asphalt mixture. In seawater immersion, the value of ERS H1 = 0 cm is 87.876%, H2 = 20 cm is 85.960%, H3 = 40 cm is 84.012 %, %, H4 = 40 cm (Laboratory Water) is 93.218%, H5 = 40 cm Polymer 2% is 93.166%, and the height of the immersion H6 = 40 cm 4% polymer is 94.073%. The value of Durability Index H1 = 0 cm is 12.124%, H2 = 20 cm is 14.040%, H3 = 30 cm is 15.988%, H4 = 40 cm (Laboratory Water) is 6.782 %, H5 = 40 cm Polymer 2% is 6.834 % and H6 = 40 cm Polymer 4% of 5.927%. The percentage decrease in residual strength of the immersion height H1 = 0 cm by 24.360 %, H2 = 20 cm by 25.592%, H3 = 40 cm by 30.750 % H4 = 40 cm (Laboratory Water) by 13.528% H5 = 40 cm Polymer 2% by 15.990% H6 = 40 cm Polymer 4%. The amount of damage to an asphalt concrete mixture in seawater immersion is due to the presence of salt in seawater which results in the bonding of an aggregate of asphalt concrete mixture in seawater immersion becoming very weak and reduced, so that all pores in the asphalt concrete mixture submerged in seawater are filled with more water. water. Therefore, the asphalt concrete mixture in seawater immersion has the potential to reduce durability.