Perfomance Of Asphalt Concrete - Binder Coarse Mixture With Glass Powder Filler Against Batanghari River Water Submersion

Abstract

Each year, during Indonesia's rainy season, flooding becomes a recurring problem, especially along the Batanghari River in Jambi City. Intense rainfall frequently leads to waterlogging in multiple areas, with river levels rising sharply and overflowing during heavy downpours. Inadequate handling of these conditions can result in road damage, including decreased pavement stability and durability due to extended water exposure. This research evaluates the efficacy of glass powder as a substitute filler in AC-BC mixtures to improve durability, structural strength, and volumetric characteristic under flood- related soaking conditions. The experimental approach involved creating AC-BC mixtures with varying glass powder filler substitutions (0%, 25%, 50%, 75%, and 100%) and immersing them in Batanghari River water for three durations (0, 24, and 48 hours). Performance was assessed using Marshall standard tests, ITS, IRS, TSR, and CL tests. The results of this study indicate that a 75% substitution of glass powder with 24-hour immersion provides optimal performance. Using 0% glass powder filler substitution as a reference, the mixture shows improvements in stability by 2%, MQ by 6.45%, VFWA by 1.45%, with density remaining unchanged, while flow decreases by 4.29%, VITM by 6.98%, and VMA by 1.38%. The ITS test demonstrates an increase in tensile strength of 1.82%, and the Cantabro test shows a minimal mass loss of 0.32%. However, reductions in TSR by 5.25% and IRS by 1.59% indicate a degree of vulnerability to prolonged water exposure. This study underscores the potential of glass waste as an environmentally friendly filler material for asphalt pavements in flood-prone areas.