Pengaruh Genangan Air Terhadap Kerusakan Jalan Aspal (AC-WC)

Highways are vital infrastructure supporting economic mobility but are prone to damage caused by waterlogging, especially during the rainy season. This study aims to analyze the effect of water inundation on the performance of AC-WC asphalt mixtures through continuous immersion testing, considering material characteristics and environmental conditions. All constituent materials, including coarse aggregate, fine aggregate, filler, and asphalt, meet the technical specifications of Bina Marga 2018. Tests were conducted on mixtures with varying asphalt content (4%–6%) to determine the optimal content and assess resistance to prolonged immersion and elevated temperatures. The results showed that the 5.5% asphalt content was the only one that met all Marshall parameters according to the standard, such as stability (1815.51 kg), flow (2.20 mm), Marshall Quotient (MQ) (827.91 kg/mm), VMA (17.05%), VITM (4.83%), and VFWA (70.76%). Immersion testing revealed that water inundation and influence of temperatures negatively affect the stability and durability of the mixture. Stability decreased from 1584.52 to 1122.11 kg and MQ from 844.00 to 432.55 over 30 days of immersion, while flow increased, indicating softening of the mixture. Significant changes also occurred in void values, including an increase in VITM from 2.54% to 4.56%. These findings confirm that prolonged water exposure accelerates structural degradation of asphalt mixtures, highlighting the critical importance of proper drainage systems and water-resistant material design in road construction.