Komposisi Optimum Campuran Lapisan Aus (Ac-Wc) Dengan Aspal Pg 70 Untuk Perkerasan Taxiway Bandara Udara Terhadap Stabilitas Marshall Dan Stabilitas Sisa

Abstract

This flexible pavement uses asphalt as a binder to absorb and transfer loads to the subgrade. On taxiways, the pavement must be able to withstand repeated aircraft loads as well as the effects of water and temperature. This study used an AC-WC mixture with PG 70 asphalt to evaluate its characteristics in relation to the requirements for airport taxiway pavements. The research method employed a quantitative experimental approach in the laboratory, involving testing of the AC-WC mixture materials and test specimens. The testing included aggregate sieve analysis, specific gravity and water absorption measurements of the aggregates, examination of the physical properties of the aggregates and PG 70 asphalt, as well as Marshall testing to determine the mixtures characteristics. The asphalt content variations tested were 4.0%, 4.5%, 5.0%, 5.5%, and 6.0%; the Optimum Asphalt Content (OAC) was then determined based on Marshall parameters and the requirements of KP DJPU 74 of 2026. Based on the test results, asphalt contents of 5.5%6.0% met the VIM requirements, resulting in an OAC of 5.75%. The research results show that at an OAS of 5.75%, the AC-WC mixture with PG 70 asphalt has a normal stability of 1,714.3 kg and a flow of 2.97 mm, thereby meeting the requirements of KP DJPU 74 of 2026. Under residual stability conditions, stability decreased to 1,598.9 kg with flow increasing to 3.55 mm, while the Residual Strength Index (IKS) value of 93.27% indicates the mixtures ability to retain its strength after exposure to water and high temperatures. Under absolute density conditions, stability increased to 2,303.3 kg and flow to 3.62 mm due to maximum compaction, which improved density and aggregate interlocking.