Pengaruh Bentuk Sambungan dan Variasi Gradasi Lapisan Baru Berdasarkan Uji Interface Shear Strength pada Rehabilitasi Taxiway

Rochmah, Alifah Widya (2026) Pengaruh Bentuk Sambungan dan Variasi Gradasi Lapisan Baru Berdasarkan Uji Interface Shear Strength pada Rehabilitasi Taxiway. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Rehabilitasi perkerasan pada area bandara khususnya taxiway, memerlukan perhatian khusus terhadap kekuatan sambungan antara lapisan lama dan lapisan baru. Sambungan yang tidak optimal dapat menyebabkan terjadinya kerusakan prematur seperti retak, pelepasan butiran, maupun deformasi plastis yang berdampak pada keselamatan operasional pesawat. Penelitian ini bertujuan untuk menganalisis pengaruh variasi bentuk sambungan dan gradasi campuran lapisan baru terhadap kekuatan interface pada area rehabilitasi patching berdasarkan uji Interface Shear Strength yang ditimbulkan karena aktivitas penerbangan. Metodologi penelitian dilakukan melalui pendekatan eksperimental laboratorium. Sampel pengujian berupa campuran Hot Mix Asphalt (HMA) dengan lapis existing menggunakan gradasi AC-FAA yang disimulasikan menggunakan metode AASHTO R30 untuk menggambarkan keadaan lapangan, kemudian benda uji dipotong menjadi bentuk sambungan flat, trapezium, dan T-section. Lapisan baru terbentuk berdasarkan gradasi AC-FAA, SMA-FAA, dan AC-BBA. Permukaan lapisan existing diberi tackcoat dengan dosis 0,35 l/m² dengan waktu curing 45 menit. Kemudian dimasukan fresh mix HMA untuk proses pemadatan menggunakan tumbukan Marshall dengan jumlah pukulan sebanyak 50x untuk sebanyak satu sisi untuk mendapatkan VIM sesuai spesifikasi. Sampel pengujian akan diuji menggunakan metode Interface Shear Strength (ISS) berdasarkan spesifikasi AASHTO TP-114 untuk mengetahui kekuatan sambungan interface antar lapis perkerasan pada area patching. Hasil penelitian menunjukan bahwa nilai ISS tertinggi pada variasi lapisan baru SMA-FAA dan AC-BBA adalah bentuk potongan sambungan Trapesium. Namun, pada variasi lapisan baru AC-FAA nilai ISS tertinggi adalah bentuk potongan T-section. Hal tersebut menunjukkan pengaruh signifikan bentuk sambungan dan gradasi lapisan baru dalam menahan gaya geser pada area patching taxiway yang dibuktikan analisis Anova Two-Way dengan sig <0,001. Penelitian ini diharapkan dapat mengembangkan spesifikasi teknis yang lebih baik untuk pekerjaan patching taxiway, karena belum memiliki pedoman teknis resmi.
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Pavement rehabilitation in airport areas, particularly taxiways, requires special attention to the strength of the bond between the existing layer and the new overlay. Inadequate bonding can lead to premature distress such as cracking, raveling, and plastic deformation, which may adversely affect aircraft operational safety. This study aims to analyze the effect of variations in joint configuration and the gradation of the new pavement mixture on interface strength in patching rehabilitation areas, based on the Interface Shear Strength (ISS) test induced by aircraft operations. The research methodology employs an experimental laboratory approach. Test specimens consist of Hot Mix Asphalt (HMA) combined with an existing layer using AC-FAA gradation, simulated using the AASHTO R30 method to represent field conditions. The new overlay layer utilizes AC-FAA, SMA-FAA, and BBA gradations. After undergoing aging, the specimens are cut to obtain flat, trapezoidal, and T-section joint configurations. The surface of the existing layer is treated with a tackcoat at a dosage of 0.35 L/m² with a curing time of 45 minutes. Fresh HMA is then placed and compacted using the Marshall hammer with 50 blows to achieve the specified Void in Mix (VIM) requirements. The specimens are subsequently tested using the Interface Shear Strength (ISS) method in accordance with AASHTO TP-114 to determine the interlayer bonding strength at patching areas. The results show that the highest Interface Shear Strength (ISS) values for the SMA-FAA and AC-BBA new layer variations were obtained using the trapezoidal joint configuration. However, for the AC-FAA new layer variation, the highest ISS value was achieved with the T-section joint configuration. These findings indicate a significant influence of joint configuration and new layer gradation on the resistance to shear forces in taxiway patching areas, as confirmed by the Two-Way ANOVA analysis with a significance value of p < 0.001. This study is expected to contribute to the development of improved technical specifications for taxiway patching works, as formal technical guidelines are currently unavailable.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	bentuk sambungan, gradasi, Interface Shear Strength, taxiway, patching shapes, gradation, Interface Shear Strength, taxiway
Subjects:	T Technology > TE Highway engineering. Roads and pavements > TE251.T74 Pavements--Design and construction
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Alifah Widya Rochmah
Date Deposited:	27 Jan 2026 08:17
Last Modified:	27 Jan 2026 08:17
URI:	http://repository.its.ac.id/id/eprint/130650

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