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All Journal Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Jurnal Talenta Sipil
Ulfah, Luthfiyyah
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Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation

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Pengaruh Karet Remah Terhadap Stabilitas Campuran Beraspal Laston AC-WC Menggunakan Metode Dry Mix: The Effect of Crumb Rubber on the Stability of Asphalt AC-WC Asphalt Mix Using the Dry Mix Method Ulfah, Luthfiyyah
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 12 No. 1 (2023): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v12i1.207

Abstract

Roads must have the appropriate mix of thickness and design to protect the subgrade from damage and to accommodate the load pressure on the road. The purpose of this research is to investigate the effects of adding crumb rubber to the hot asphalt mixture of the Laston AC-WC type. The research was conducted in two stages, involving the creation of test specimens. In the first stage, the bitumen content of the specimens included 5%, 5.5%, 6%, 6.5%, and 7%. In the second stage, In the second stage, crumb rubber was added to the mixture at percentages: 0%, 5%, 10%, 15%, and 20%. The crumb rubber was mixed using the dry mix method. Several parameters were considered based on the results of the Marshall Test, in accordance with the General Highways specifications (VFA, VIM, VMA, Stability, Meltability and MQ). characteristics analysis aims to determine the impact of crumb rubber content on the elasticity, durability, and other properties of the asphalt mixture. Of all the variations of the hot mix asphalt type Laston AC-WC mixed with crumb rubber; the optimum level of crumb rubber mixture was obtained at 5% for the hot mix asphalt type Laston AC-WC. From the research results, when 5% crumb rubber was added to the asphalt mixture, the following values were obtained: 856.1 kg stability, 3.07 mm flow and 290.40 kg/mm MQ. In contrast, the stability value of hot asphalt concrete asphalt concrete type AC-WC with 5% asphalt has 813.7 kg stability, 3.03 mm flow and 268.30 kg/mm MQ.
Studi Eksperimental Penambahan Biji Plastik dan Fly Ash Pada Karakteristik Campuran Aspal (AC-WC) Yulianti, Dimitri; Ulfah, Luthfiyyah; Lubis, Lega Reskita; Haki, Helmi
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.853

Abstract

Infrastructure development requires innovative approaches to enhance the performance of pavements while supporting environmental sustainability. This study aims to identify the impact of adding LDPE 812 plastic pellets and fly ash on the characteristics of an asphalt mixture in the AC-WC layer using the wet mix method. The tests were conducted with variations in the plastic pellet content of 0%, 6%, 6.5%, and 7%. The additives used were LDPE 812 plastic pellets with a specific gravity of 0.917 g/cm³ and fly ash with a specific gravity of 2.71 g/cm³. The tests included aggregate analysis, asphalt characteristics, and Marshall testing to evaluate stability, flow, voids in mix (VIM), voids in mineral aggregate (VMA), voids filled with asphalt (VFA), and Marshall Quotient (MQ). The results of the study showed that adding plastic pellets improved the stability of the asphalt mixture, especially at a plastic pellet content of 6%. At the 6% plastic pellet and 5% asphalt content, the stability value reached 3092 kg, indicating a significant improvement in resistance to deformation and flow. The flow value for the mixture with 6% plastic pellets at 5% asphalt content reached an average of 4.32 mm, while with 7% plastic pellets at the same asphalt content it reached 3.37 mm. At an asphalt content of 5%, the MQ value for a normal asphalt mixture is 338 kg/mm, while an asphalt mixture with 6% plastic pellets reaches 780.51 kg/mm, but decreases to 311.81 kg/mm at a plastic pellet content of 7%. This study suggests that asphalt mixtures with the addition of plastic pellets and fly ash can be an effective and environmentally friendly alternative for the development of sustainable road pavements.
Co-Authors Helmi Haki Lubis, Lega Reskita Yulianti, Dimitri