Electronic Theses and Dissertation

Ukuran tanah lanau yang memenuhi spesifikasi ukuran filler yang lolos saringan No.200 pada campuran aspal beton lapis aus dengan ukuran partikel tanah lanau berkisar antara 0,002 mm hingga 0,063 mm. Asphalt Concrete–Wearing Course (AC-WC)/aspal beton lapis aus yaitu lapisan perkerasan aspal paling luar yang bersentuhan langsung dengan beban kendaraan dan cuaca. Ukuran partikel tanah lanau yang memenuhi spesifikasi ukuran filler yang dapat mengisi rongga pada pencampuran perkerasan jalan. Maka dari itu pengujian ini melakukan uji kelayakan tanah lanau sebagai bahan filler alternatif. Penelitian ini bertujuan mengevaluasi pengaruh penggunaan tanah lanau sebagai filler terhadap stabilitas dan flow campuran aspal beton AC-WC dan mengetahui pengaruh tanah lanau sebagai filler terhadap data tanah (durabilitas) campuran aspal beton AC-WC. Penelitian ini dilakukan dengan pengujian KAO, didapatkan nilai kadar aspal optimum 5,39%, nilai kadar aspal batas bawah 5,00% dan nilai kadar aspal batas atas 5,78% yang dijadikan kadar aspal untuk lima variasi persentase campuran tanah lanau sebagai filler dalam kadar 0%, 5%, 10%, 15%, 20%. Berdasarkan kelima variasi substitusi tanah lanau didapatkan nilai stabilitas dan durabilitas terbaik campuran aspal AC-WC yaitu substitusi filler tanah lanau 5% kadar aspal 5,39% dengan nilai stabilitas 1441,63 kg dan nilai flow 2,77 mm. Uji Durabilitas pada substitusi tanah lanau 5% dengan kadar aspal 5,39% didapatkan nilai durabilitas sebesar 89,64% yang kurang dari 90,00% tidak memenuhi spesifikasi Umum Bina Marga namun nilai durabilitas 89,64 lebih dari 75% memenuhi spesifikasi AASHTO. Hasil penelitian ini disimpulkan bahwa pengaruh penggunaan tanah lanau sebagai filler terhadap daya tahan campuran aspal beton lapis aus (AC-WC) tidak tahan terhadap pengaruh air dan cuaca.
Kata Kunci: tanah lanau, filler, aspal beton lapis aus, parameter marshall

The particle size of silt soil, which ranges from 0.002 mm to 0.063 mm, meets the filler size specifications that pass the No.200 sieve in Asphalt Concrete – Wearing Course (AC-WC) mixtures. AC-WC is the outermost asphalt pavement layer that is in direct contact with vehicle loads and weather conditions. The particle size of silt soil, which fulfills the filler specification requirements, can fill voids in road pavement mix designs. Therefore, this study conducts feasibility testing of silt soil as an alternative filler material. This research aims to evaluate the effect of using silt soil as filler on the stability and flow of AC-WC asphalt concrete mixtures and to determine the effect of silt soil as filler on the durability of AC-WC asphalt concrete mixtures. This study was conducted through Optimum Asphalt Content (OAC) testing, which obtained an optimum asphalt content value of 5.39%, a lower asphalt content limit of 5.00%, and an upper asphalt content limit of 5.78%. These values were used as asphalt content for five variation percentages of silt soil as filler at rates of 0%, 5%, 10%, 15%, and 20%. Based on the five variations of silt soil substitution, the best stability and durability values for the AC-WC asphalt mixture were obtained with 5% silt soil filler substitution at 5.39% asphalt content, resulting in a stability value of 1441.63 kg and a flow value of 2.77 mm. The durability test on 5% silt soil substitution with 5.39% asphalt content yielded a durability value of 89.64%, which is less than 90.00% and does not meet the Bina Marga General Specifications; however, the durability value of 89.64% exceeds 75%, thus meeting the AASHTO specifications. It is concluded from this study that the use of silt soil as filler negatively affects the durability of the AC-WC asphalt mixture, making it less resistant to the effects of water and weather conditions. Keywords: silt, filler, asphalt concrete wearing course, marshall parameters