Analisis kinerja mekanik dan volumetrik campuran AC-WC dengan metode pemadatan marshall dan gyratory

The increasing number of motor vehicles in Indonesia has driven the need for stronger and higher-performance road infrastructure. One of the most important factors in asphalt concrete mix design is the compaction process, as it significantly affects the mechanical and volumetric characteristics of the mixture. The Marshall compaction method has long been used as a conventional standard; however, the Gyratory compaction method has emerged as a more modern alternative due to its ability to simulate field compaction conditions more realistically through a combination of vertical pressure and rotational motion. This study aimed to analyze the differences in the mechanical and volumetric characteristics of AC-WC mixtures using Marshall and Gyratory compaction methods. The research was conducted experimentally at the Highway Laboratory of Universitas Islam Indonesia through several stages, including literature review, testing of aggregate and asphalt characteristics, specimen preparation based on compaction type, and Marshall characteristic testing. The results showed that the Gyratory compaction method produced better mechanical characteristics than the Marshall method, indicated by a 16.68% increase in stability value and a 4.9% decrease in flow value. In terms of volumetric characteristics, Gyratory compaction resulted in lower VITM and VMA values and higher VFWA values, indicating that the mixture became denser, more homogeneous, more stable, and more representative of field compaction conditions compared to the Marshall compaction method.