Electronic Theses and Dissertation

Kerusakan jalan dan kebutuhan akan infrastruktur transportasi yang berkualitas di indonesia menjadi isu penting. jalan yang rusak mengganggu mobilitas dan menimbulkan kerugian ekonomi. salah satunya pada saat musim hujan, aspal cenderung lemah dengan genangan air yang terjadi karena hujan yang menyebabkan perubahan bentuk permukaan. campuran aspal porus merupakan solusi yang memungkinkan air mengalir melalui rongga dalam perkerasan. namun, aspal porus memiliki kelemahan dalam hal stabilitas. salah satu cara untuk mengatasi kelemahan tersebut adalah dengan memanfaatkan ban dalam bekas, plastik high-density polyethylene (hdpe), dan gilsonite sebagai substitusi terhadap aspal penetrasi 60/70. penelitian ini bertujuan untuk mengetahui karakteristik campuran aspal porus dengan menggunakan substitusi aspal sebesar 25% dari total berat kadar aspal optimum (kao) dengan persentase pemakaian ban dalam bekas, hdpe, dan gilsonite masing-masing sebesar 5%, 15%, 5% (variasi 1), 10%, 10%, 5% (variasi 2), 15%, 5%, 5% (variasi 3) terhadap parameter cantabro loss (cl), asphalt flow down (afd), uji marshall, durabilitas, dan permeabilitas. pembuatan benda uji untuk penentuan kadar aspal optimum (kao) berdasarkan metode australian asphalt pavement association (aapa) 2004. gradasi agregat yang digunakan adalah gradasi terbuka dengan kadar aspal 4,5%; 5,0%; 5,5%; 6,0% dan 6,5% sebelum disubstitusi. selanjutnya dilakukan pengujian dan perhitungan parameter marshall, cl dan afd untuk mendapatkan kao, nilai kao diperoleh sebesar 5,75%. selanjutnya dibuat benda uji menggunakan nilai kao, adapun hasil pengujian marshall menunjukkan nilai stabilitas variasi terbaik diperoleh pada variasi 3 sebesar 598,04 kg, nilai density diperoleh sebesar 2,08 gr/cm3, nilai vim diperoleh 18,45%, nilai flow diperoleh sebesar 5,50 mm dan nilai marshall quotient diperoleh sebesar 109,01 kg/mm dengan nilai berat jenis aspal modifikasi sebesar 1,078 gr/cm3, penetrasi sebesar 59,3 mm, titik lembek 51,5 °c dan daktilitas sebesar 51,5 cm. pada pengujian cantabro loss, asphalt flow down, durabilitas dan permeabilitas didapatkan hasil yang sesuai dengan spesifikasi aapa (2004). hasil yang didapat menandakan bahwa karakteristik campuran porus menggunakan substitusi ban dalam bekas, hdpe, dan gilsonite dapat digunakan pada campuran beraspal.

Damage to roads and the need for quality transportation infrastructure in Indonesia have become crucial issues. Damaged roads disrupt mobility and cause economic losses. One of the main issues occurs during the rainy season when asphalt tends to weaken due to water pooling, leading to changes in surface shape. Porous asphalt mixtures offer a solution by allowing water to flow through the voids in the pavement. However, porous asphalt has weaknesses in terms of stability. One way to overcome these weaknesses is by utilizing recycled inner tubes, High-Density Polyethylene (HDPE) plastic, and Gilsonite as substitutes for penetration asphalt 60/70. This study aims to determine the characteristics of porous asphalt mixtures using a 25% asphalt substitution from the total optimum asphalt content (OAC), with the percentage of recycled inner tubes, HDPE, and Gilsonite being 5%, 15%, and 5% (Variation 1); 10%, 10%, and 5% (Variation 2); and 15%, 5%, and 5% (Variation 3), respectively. These variations were tested against parameters such as Cantabro Loss (CL), Asphalt Flow Down (AFD), Marshall Test, Durability, and Permeability. The test specimens for determining the optimum asphalt content (OAC) were prepared based on the Australian Asphalt Pavement Association (AAPA) 2004 method. The aggregate gradation used was an open-graded gradation with asphalt content levels of 4.5%, 5.0%, 5.5%, 6.0%, and 6.5% before substitution. Subsequent testing and calculation of the Marshall, CL, and AFD parameters were conducted to determine the OAC, which was found to be 5.75%. Further, test specimens were created using the determined OAC. The results of the Marshall test indicated that the best stability value was obtained in Variation 3, with a stability value of 598.04 kg, a density of 2.08 g/cm³, a VIM value of 18.45%, a flow value of 5.50 mm, and a Marshall Quotient of 109.01 kg/mm with an asphalt modify specific gravity value of 1.078 gr/cm3, penetration of 59.3 mm, softening point of 51.5 °C and ductility of 51.5 cm. In the Cantabro Loss, Asphalt Flow Down, Durability and Permeability tests, the results were obtained in accordance with the AAPA specifications (2004). The results obtained indicate that the characteristics of the porous mixture using used inner tire, HDPE, and gilsonite substitutions can be used in asphalt mixtures.