Prediksi Sisa Umur Layan Perkerasan Jalan Berdasarkan Hasil Pengukuran Kondisi Fungsional dan Struktural Perkerasan Jalan

Muhammad Firdauz Fadila, Ir. Mukhammad Rizka Fahmi Amrozi, S.T., M.Sc., Ph.D.

2025 | Skripsi | TEKNIK SIPIL

Manajemen perkerasan jalan perlu dilakukan secara komprehensif dengan mempertimbangkan kondisi fungsional dan struktural perkerasan jalan. Selain itu dengan memperhatikan life cycle cost dari perkerasan jalan, sisa umur layan perkerasan menjadi faktor penting untuk menentukan jenis pekerjaan jalan yang tepat. Penelitian ini memprediksi sisa umur layan atau Remaining Service Life (RSL) untuk mengevaluasi kinerja perkerasan jalan dengan mengetahui estimasi waktu fungsi dan performa struktural sisa perkerasan pada ruas Jalan Sultan Agung-Tembi.

Nilai RSL diestimasi berdasarkan kondisi fungsional menggunakan metode Ontario Good Roads Association (OGRA) dan metode Bina Marga 2021. Kemudian dibandingkan dengan nilai estimasi RSL berdasarkan kondisi struktural dengan metode Asphalt Institue 1982 dan AASHTO 1993. Nilai kondisi fungsional Pavement Condition Index (PCI) yang diukur menggunakan metode ASTM D6433-11 dan International Roughness Index (IRI) yang diukur menggunakan alat bantu aplikasi android RoadLab Pro dan RoadBounce Pro. Sedangkan nilai struktural menggunakan pendekatan mekanistik-empirik dengan bantuan program KENLAYER KENPAVE.

Pada ruas Jalan Sultan Agung-Tembi didapatkan nilai PCI 73,4 (Satisfactory), IRI RoadLab Pro 4,41 (Sedang) dan IRI RoadBounce Pro 2,51 (Baik). Aplikasi RoadLab Pro menghasilkan nilai IRI yang lebih realistis dan representatif dibandingkan RoadBounce Pro. Dari aspek struktural, perkerasan dengan CBR subgrade 3,3% menghasilkan regangan kritis fatigue cracking 2,604×10-4, rutting 4,792 ×10-4, dan permanent deformation 8,411×10-4. Sedangkan perkerasan dengan CBR subgrade 6% menghasilkan regangan kritis fatigue cracking 2,750×10 4 , rutting 4,982 ×10-4, dan permanent deformation 6,365×10-4. Nilai RSL terendah adalah RSL PCI (8,79 tahun) diikuti RSL KENLAYER (CBR 3,3%: 9,20 tahun dan CBR 6%: 9,69 tahun), RSL IRI RoadLab Pro (11,64 tahun), dan RSL IRI RoadBounce Pro (26,02 tahun). Nilai RSL fungsional PCI menghasilkan prediksi yang lebih mendekati RSL structural performance dibandingkan RSL IRI karena metode PCI lebih merepresentasikan kondisi kerusakan badan jalan, sedangkan metode IRI hanya dapat berfokus pada ketidakrataan wheel track permukaan.

Pavement management must be done comprehensively by taking pavement functional and structural condition into consideration. By concerning pavement life cycle cost, remaining service life becomes a crucial factor to determine the right roadworks. This research predicts pavement Remaining Service Life (RSL) to evaluate pavement performance by learning the estimated function time and the remaining pavement structural performance of Sultan Agung-Tembi street.

RSL is estimated based on its functional condition using Ontario Good Roads Association (OGRA) and Bina Marga 2021 method. Then, it’s compared to the estimated RSL based on the pavement structural condition using Asphalt Institute 1982 and AASHTO 1993. Pavement functional condition value Pavement Condition Index (PCI) is measured using ASTM D6433 11 and International Roughness Index (IRI) is measured utilizing RoadLab Pro and RoadBounce Pro android application. While structural value is approached using mechanistic empirical utilizing KENLAYER KENPAVE program.

Sultan Agung-Tembi street, received PCI value of 73.4 (Satisfactory), IRI RoadLab Pro value of 4.41 (Fair), and IRI RoadBounce Pro value of 2.51 (Good). RoadLab Pro application resulted a more realistic and representative IRI value compared to RoadBounce Pro. From structural aspect, pavement with 3.3?R subgrade resulted critical strains of 2.604×10-4 for fatigue cracking, 4.792×10-4 for rutting, and 8.411×10-4 for permanent deformation. While pavement with 6?R subgrade resulted critical strains of 2.750×10-4 for fatigue cracking, 4.982×10-4 for rutting, and 6.365×10-4 for permanent deformation. The lowest RSL is PCI RSL (8.79 years) followed by KENLAYER RSL (3.3?R: 9.20 years and 6?R: 9.69 years), IRI RoadLab Pro RSL (11.64 years), and IRI RoadBounce Pro RSL (26.02 years). PCI functional RSL value prediction, resulted an RSL closer to the structural performance RSL compared to IRI RSL because PCI method represents more of the damaged road condition, while IRI method only concern is the surface of the wheel track roughness.   

Kata Kunci : Remaining Service Life (RSL), Fungsional, Pavement Condition Index (PCI), International Roughness Index (IRI), Struktural