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

Highways are critical infrastructure for supporting economic mobility, yet they are vulnerable to damage caused by waterlogging. This study aims to analyze the effect of water ponding on the performance of Asphalt Concrete–Base (AC-Base) mixtures through Marshall testing. The Optimum Asphalt Content (OAC) was determined to be 6.0% based on testing five asphalt content variations 4.0%–6.0%. The tests were conducted under three conditions: without soaking, soaking in room-temperature water, and soaking in hot water 60°C. For room-temperature water soaking, stability significantly decreased from 2,635.59 kg 1 day to 2,126.43 kg 7 days and 1,668.44 kg 30 days, although still meeting the minimum specification of 1,800 kg. The Marshall Quotient (MQ) dropped from 846.03 kg/mm to 470.88 kg/mm, VIM increased from 3.94% to 7.75% exceeding the maximum limit of 5%, and VFA decreased from 76.57% to 61.59% below the minimum of 65%, indicating degradation of the asphalt-aggregate bond. Conversely, in the without-soaking condition, stability increased from 1,837.96 kg 1 day to 2,238.07 kg 30 days, indicating structural strengthening over time. For hot water soaking, stability remained high at 2,623.13 kg 30 minutes and 2,433.62 kg 60 minutes, with MQ reaching 880.38 kg/mm 30 minutes and VFA at 74.59%, indicating optimal asphalt penetration and strong bonding. These findings confirm that prolonged waterlogging degrades asphalt mixture performance, emphasizing the need for effective drainage systems and potential thermal treatments to extend pavement service life