Electronic Theses and Dissertation

Campuran Aspal Beton Lapis Aus (AC-WC) merupakan lapisan perkerasan yang
menerima langsung beban lalu lintas dan pengaruh cuaca sehingga memerlukan
material penyusun yang berkualitas baik. Salah satu komponen penting dalam
campuran aspal adalah filler yang berfungsi mengisi rongga antar agregat dan
meningkatkan ikatan agregat dengan aspal. Kebutuhan akan material alternatif yang
tersedia secara lokal mendorong pemanfaatan tanah merah sebagai substitusi filler.
Tanah merah yang digunakan dalam penelitian ini berasal dari Jalan Blang Bintang
Krueng Raya, Kecamatan Montasik, Kabupaten Aceh Besar. Berdasarkan hasil
klasifikasi, tanah merah tersebut tergolong sebagai tanah lanau. Penelitian ini
bertujuan untuk mengetahui pengaruh penggunaan tanah merah sebagai substitusi
filler terhadap karakteristik Marshall dan durabilitas campuran AC-WC. Metode
penelitian yang digunakan adalah eksperimen laboratorium dengan melakukan
pengujian sifat fisis tanah merah, sifat fisis agregat dan aspal penetrasi 60/70.
Penentuan Kadar Aspal Optimum (KAO) dilakukan berdasarkan Spesifikasi Umum
Bina Marga 2018 Revisi 2 (2020). Selanjutnya dibuat benda uji dengan variasi
substitusi tanah merah sebesar 0%, 5%, 10%, 15%, dan 20% terhadap total filler.
Pengujian dilakukan menggunakan metode Marshall dan pengujian durabilitas
melalui perendaman selama 30 menit dan 24 jam pada suhu 60°C. Hasil penelitian
menunjukkan bahwa penggunaan tanah merah mempengaruhi karakteristik
Marshall dan durabilitas campuran AC-WC. Karakteristik Marshall terbaik
diperoleh pada substitusi tanah merah 15% dengan kadar aspal 5,39%, yang
menghasilkan nilai stabilitas 1319,31 kg, flow 2,20 mm, VIM 4,82%, VMA 17,66%,
VFA 72,89%, dan Marshall Quotient 739,21 kg/mm. Nilai durabilitas yang
diperoleh sebesar 98,27%, sehingga memenuhi persyaratan minimum 90%
berdasarkan Spesifikasi Umum Bina Marga 2018 Revisi 2 (2020). Berdasarkan
hasil penelitian, substitusi tanah merah sebesar 15% terhadap total filler merupakan
variasi terbaik karena menghasilkan karakteristik Marshall dan durabilitas yang
memenuhi persyaratan spesifikasi.
Kata kunci: tanah merah, karakteristik Marshall, durabilitas, filler, AC-WC

Asphalt Concrete Wearing Course (AC-WC) is a pavement layer that is directly exposed to traffic loads and weather conditions, requiring high-quality constituent materials. One of the important components in asphalt mixtures is filler, which functions to fill the voids between aggregates and improve the bond between aggregates and asphalt binder. The need for locally available alternative materials has encouraged the utilization of red soil as a filler substitute. The red soil used in this study was obtained from Blang Bintang–Krueng Raya Road, Montasik District, Aceh Besar Regency. Based on the soil classification results, the red soil was classified as silt. This study aimed to determine the effect of using red soil as a filler substitute on the Marshall characteristics and durability of AC-WC mixtures. The research employed a laboratory experimental method by conducting physical property tests on the red soil, aggregates, and 60/70 penetration grade asphalt. The Optimum Asphalt Content (OAC) was determined in accordance with the 2018 Bina Marga General Specifications Revision 2 (2020). Specimens were then prepared with red soil substitution levels of 0%, 5%, 10%, 15%, and 20% of the total filler content. Testing was carried out using the Marshall method, while durability was evaluated through immersion for 30 minutes and 24 hours at a temperature of 60°C. The results showed that the use of red soil affected the Marshall characteristics and durability of AC-WC mixtures. The best Marshall characteristics were obtained at 15% red soil substitution with an asphalt content of 5.39%, resulting in a stability value of 1319.31 kg, a flow value of 2.20 mm, VIM of 4.82%, VMA of 17.66%, VFA of 72.89%, and a Marshall Quotient of 739.21 kg/mm. The durability value obtained was 98.27%, exceeding the minimum requirement of 90% specified in the 2018 Bina Marga General Specifications Revision 2 (2020). Based on the results, a red soil substitution level of 15% of the total filler content was identified as the optimum variation, as it produced Marshall characteristics and durability that satisfied the specification requirements. Keywords: red soil, Marshall characteristics, durability, filler, AC-WC