PERBANDINGAN KINERJA CAMPURAN BERASPAL DARI ASPAL PEN 60/70 DAN ASPAL PG DI INDONESIA
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Abstract
The selection of asphalt type plays a crucial role in determining pavement performance, particularly against moisture-induced damage. This study evaluates three types of asphalt, namely Pen 60/70, PG70, and PG76, using the Marshall mix design method. The results indicate that PG76 achieved the highest stability (2179 kg at 30 minutes and 2144 kg after 24 hours of immersion), followed by PG70 (1558–1551 kg), while Pen 60/70 showed the lowest values (1395–1219 kg). The highest flow was observed in Pen 60/70 (4.2–4.9 mm), indicating a more plastic behavior, whereas PG70 had the lowest flow (3.8–4.1 mm). The highest Marshall Quotient (MQ) was obtained with PG76 (487–438 kg/mm), and the lowest with Pen 60/70 (343–249 kg/mm). Retained Marshall Stability (RMS) analysis revealed that PG70 and PG76 achieved very high values (99.55% and 98.39%), compared to only 87.38% for Pen 60/70. These findings demonstrate that modified asphalts (PG70 and PG76) exhibit superior resistance to moisture damage and are therefore recommended for medium to heavy traffic roads in tropical regions with high rainfall.
Abstrak
Pemilihan jenis aspal sangat menentukan kinerja perkerasan jalan, terutama terhadap kerusakan akibat air. Penelitian ini mengevaluasi tiga jenis aspal, yaitu Pen 60/70, PG70, dan PG76 dengan perancangan menggunakan metode uji Marshall. Hasil menunjukkan bahwa PG76 memiliki stabilitas tertinggi (2179 kg pada standar 30 menit dan 2144 kg setelah perendaman 24 jam), diikuti PG70 (1558–1551 kg), sedangkan Pen 60/70 terendah (1395–1219 kg). Nilai flow terbesar ditunjukkan oleh Pen 60/70 (4,2–4,9 mm), menandakan sifat plastis, sedangkan PG70 memiliki flow terendah (3,8–4,1 mm). MQ tertinggi diperoleh pada PG76 (487–438 kg/mm) dan terendah pada Pen 60/70 (343–249 kg/mm). Analisis Retained Marshall Stability (RMS) memperlihatkan PG70 dan PG76 memiliki nilai sangat tinggi (99,55% dan 98,39%), sedangkan Pen 60/70 hanya 87,38%. Hal ini menunjukkan bahwa aspal modifikasi (PG70 dan PG76) lebih tahan terhadap kerusakan akibat air, sehingga direkomendasikan untuk jalan dengan lalu lintas sedang hingga berat pada wilayah beriklim tropis dengan curah hujan tinggi.
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This work is licensed under Jurnal Mitra Teknik Sipil (JMTS) Creative Commons Attribution-ShareAlike 4.0 International License.References
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