Pengaruh Waste Cooking Oil Sebagai Rejuvenator pada Reclaimed Asphalt Pavement terhadap Karakteristik Marshall dan Durabilitas

Abstract

Pemanfaatan Reclaimed Asphalt Pavement (RAP) dapat meningkatkan efisiensi material perkerasan jalan, namun keberadaan aspal tua pada RAP menyebabkan campuran menjadi kaku sehingga diperlukan bahan peremaja seperti Waste Cooking Oil (WCO). Penelitian ini bertujuan menganalisis pengaruh penambahan WCO pada campuran RAP terhadap karakteristik Marshall dan durabilitas campuran AC-WC. Pengujian Marshall pada variasi kadar RAP 30, 45, dan 60% dengan penambahan WCO sebesar 4, 6, dan 8%. Selanjutnya, pengujian durabilitas dilakukan pada campuran optimum menggunakan parameter Indeks Kekuatan Sisa (IKS), Indeks Durabilitas Pertama (IDP), dan Indeks Durabilitas Kedua (IDK) dengan variasi lama perendaman 0,5; 24; 48; 72; dan 96 jam. Hasil penelitian menunjukkan campuran optimum diperoleh pada RAP 45% dengan nilai stabilitas berkisar antara 2.551,12–2.854,51 kg, nilai flow berada pada rentang 2,40–2,48 mm, dan nilai Marshall Quotient (MQ) sebesar 1.033,24–1.1176,78 kg/mm. Nilai IKS standar tertinggi diperoleh pada WCO 6% sebesar 90,25%, sedangkan nilai IDP dan IDK terbesar terjadi pada campuran kontrol masing-masing sebesar 0,31 dan 6,26% pada interval perendaman 0,5–24 jam.

The utilization of Reclaimed Asphalt Pavement (RAP) can improve the efficiency of pavement materials, the presence of aged asphalt in RAP causes the mixture to become stiff, requiring a rejuvenating agent such as Waste Cooking Oil (WCO) to restore asphalt properties. This study aimed to analyze the effect of WCO addition on the Marshall characteristics and durability of AC-WC mixtures containing RAP. Marshall test with RAP contents of 30, 45, 60%, and WCO contents of 4, 6, 8%. Furthermore, durability testing was conducted on the optimum mixture using the parameters of Retained Strength Index (RSI), First Durability Index (FDI), and Second Durability Index (SDI) with immersion durations of 0.5, 24, 48, 72, and 96 hours. The results showed that the optimum mixture was obtained at 45% RAP, with stability values ranging from 2,551.12–2,854.51 kg, flow values ranging from 2.40–2.48 mm, and Marshall Quotient (MQ) values of 1,033.24–1,1176.78 kg/mm. The highest standard IKS value was obtained at 6% WCO (92.86%), while the highest FDI and SDI values occurred in the control mixture at 0.31 and 6.26%, respectively, during the 0.5–24 hour immersion interval.