Electronic Theses and Dissertation

Jalan raya merupakan salah satu prasarana penting yang menunjang percepatan pertumbuhan dan pengembangan wilayah. Namun, dalam pelaksanaannya, pembangunan jalan sering menghadapi kendala, terutama pada tahap pengaspalan di lokasi yang jauh dari Asphalt Mixing Plant (AMP). Salah satu dampaknya adalah penurunan suhu campuran, yang dapat menyebabkan proses pemadatan tidak optimal, sehingga menurunkan nilai stabilitas dan mutu lapisan perkerasan. Penelitian ini bertujuan untuk menganalisis pengaruh variasi jumlah tumbukan pemadatan terhadap karakteristik Marshall pada campuran Asphalt Concrete – Wearing Course (AC–WC) yang dipadatkan pada suhu 70°C dan 90°C. Pengujian dilakukan secara eksperimental di Laboratorium Jalan Raya, Teknik Sipil Universitas Syiah Kuala, Banda Aceh, menggunakan metode Marshall sesuai standar Bina Marga 2018 Revisi 2 dan SNI. Jumlah tumbukan yang divariasikan meliputi 2 × 75, 2 × 85, 2 × 95, 2 × 105, dan 2 × 115. Hasil evaluasi menunjukkan bahwa nilai Kadar Aspal Optimum (KAO) yang diperoleh adalah 5,75%, 5,88%, dan 6,00%. Pada suhu 70°C, hasil paling optimal diperoleh pada jumlah tumbukan 2 × 95 dan 2 × 105, sedangkan pada suhu 90°C, hasil optimal ditemukan pada 2 × 85 dan 2 × 95. Hasil pengujian dan analisis penambahan jumlah tumbukan pemadatan pada suhu rendah cenderung meningkatkan nilai stabilitas, kepadatan, VFB, dan Marshall Quotient (MQ), namun menyebabkan penurunan nilai Void in Mix (VIM) dan flow pada suhu 70°C, serta penurunan VIM dan VMA pada suhu 90°C.

Highways are one of the essential infrastructures that support the acceleration of regional growth and development. However, in practice, road construction often faces several challenges, particularly during the asphalt paving stage in locations far from the Asphalt Mixing Plant (AMP). One of the main consequences of this condition is a decrease in the temperature of the asphalt mixture, which can lead to suboptimal compaction, thereby reducing the stability and overall quality of the pavement layer. This study aims to analyze the influence of variations in the number of compaction blows on the Marshall characteristics of Asphalt Concrete – Wearing Course (AC–WC) mixtures compacted at temperatures of 70°C and 90°C. The experimental testing was conducted in the Highway Engineering Laboratory, Department of Civil Engineering, Universitas Syiah Kuala, Banda Aceh, using the Marshall method in accordance with the 2018 Bina Marga specifications (Revision 2) and Indonesian National Standards (SNI). The number of blows applied was varied at 2 × 75, 2 × 85, 2 × 95, 2 × 105, and 2 × 115. The evaluation results showed that the Optimum Asphalt Content (OAC) obtained was 5.75%, 5.88%, and 6.00%. At 70°C, the most optimal results were achieved at 2 × 95 and 2 × 105 blows, while at 90°C, optimal outcomes were observed at 2 × 85 and 2 × 95 blows. The results of analysis indicate that increasing the number of compaction blows at lower temperatures tends to improve the values of stability, density, Void Filled with Bitumen (VFB), and Marshall Quotient (MQ), but leads to a decrease in Void in Mix (VIM) and flow values at 70°C, as well as a reduction in VIM and Void in Mineral Aggregate (VMA) at 90°C.