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All Journal Justek : Jurnal Sains Dan Teknologi Quimica : Jurnal Kimia Sains dan Terapan Calamity: A Journal of Disaster Technology and Engineering Journal of Planning and Research in Civil Engineering ABDIMU: Jurnal Pengabdian Muhammadiyah
Sabilla, Arissa
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Religion Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Analisis Perubahan Struktur Mineral Tanah Akibat Reaksi Kimia antara Lempung dan Kapur pada Kondisi Kelembapan Tinggi Sabilla, Arissa; Rikza, Rikza; Alfisyahrin, Alfisyahrin; Masthura, Masthura; Rizky, Sari; Damayanti, Rizki
JURNAL QUIMICA Vol 7 No 2 (2025)
Publisher : Program Studi Kimia, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jq.v7i2.13354

Abstract

Penelitian ini bertujuan untuk menganalisis perubahan struktur mineral tanah akibat reaksi kimia antara lempung dan kapur pada kondisi kelembapan tinggi dengan memanfaatkan data sekunder hasil uji laboratorium terdahulu. Analisis difokuskan pada hubungan antara variasi kadar kapur terhadap perubahan sifat mekanik dan mekanisme kimia yang mendasarinya. Bahan penelitian berupa tanah lempung berplastisitas tinggi (CH) yang distabilisasi menggunakan kapur padam (Ca(OH)₂) pada kadar 0%, 2%, 4%, 6%, 8%, 10%, dan 12% dari berat kering tanah. Hasil pengujian menunjukkan bahwa penambahan kapur hingga kadar optimum 6% meningkatkan nilai sudut geser dalam (ϕ) dari 20,545° menjadi 39,330°, serta kohesi (c) dari 1,505 t/m² menjadi 2,080 t/m². Peningkatan kekuatan ini disebabkan oleh terbentuknya senyawa Calcium Silicate Hydrate (CSH) dan Calcium Aluminate Hydrate (CAH) hasil reaksi pozzolanisasi antara ion Ca²⁺ dari kapur dan mineral silikat–aluminat dari tanah lempung. Kelembapan tinggi mempercepat proses difusi ion dan pembentukan senyawa pengikat tersebut, sehingga struktur tanah menjadi lebih rapat dan kaku. Namun, pada kadar kapur di atas 10%, reaksi kimia tidak berjalan efektif karena terbentuk lapisan jenuh Ca(OH)₂ yang menghambat difusi ion. Secara geoteknis, kondisi optimum tercapai pada kombinasi kadar kapur 6–8% dengan kelembapan tinggi yang terkontrol, yang mampu meningkatkan kekuatan geser dan menurunkan plastisitas tanah secara signifikan.
Efek Komposisi NaCl dan Sulfur terhadap Struktur Mikro dan Kekuatan Geser Tanah Pasir Sabilla, Arissa; Rikza; Sinurat, Dian Aswatul; Siregar, Putri Fikadilah; Juanda, Ari; Yosantia, Muhammad Ferah; Muammar, Rajib; Damayanti, Rizki
JURNAL QUIMICA Vol 7 No 2 (2025)
Publisher : Program Studi Kimia, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jq.v7i2.13356

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh komposisi campuran garam dapur (NaCl) dan belerang (S) terhadap perubahan struktur mikro serta peningkatan kekuatan geser tanah pasir berlempung (SC). Penelitian menggunakan pendekatan analisis deskriptif berbasis data sekunder dari hasil uji kuat geser langsung (Direct Shear Test) pada tanah pasir yang distabilisasi dengan variasi campuran 6% sulfur dan 6–12% NaCl. Hasil analisis menunjukkan bahwa campuran 6% sulfur dan 12% NaCl menghasilkan peningkatan nilai kohesi sebesar ±58%, sudut geser dalam sebesar ±48%, dan tegangan geser maksimum sebesar ±155% dibandingkan tanah asli. Peningkatan kekuatan geser ini disebabkan oleh terbentuknya senyawa pozzolanik seperti Calcium Silicate Hydrate (C–S–H) dan ettringite yang memperkuat ikatan antar partikel tanah. Secara mikrostruktural, terjadi pemadatan partikel, penurunan porositas, serta peningkatan interlocking akibat interaksi ionik antara Na⁺, Cl⁻, dan SO₄²⁻ dengan mineral tanah. Hasil penelitian ini menunjukkan bahwa kombinasi NaCl dan sulfur dapat berfungsi sebagai bahan stabilisasi kimia efektif yang mampu meningkatkan kekuatan mekanik dan kestabilan mikrostruktur tanah pasir secara signifikan. Penelitian ini diharapkan dapat menjadi dasar pengembangan teknologi stabilisasi tanah berbasis reaksi kimia alami yang ramah lingkungan dan ekonomis.
Evaluasi Kerusakan Perkerasan Jalan Perkotaan Berdasarkan Metode Pavement Condition Index (PCI) (Studi Kasus: Ruas Jalan Malikul Adil, Kota Langsa) Ari Juanda; Muammar, Rajib; Sabilla, Arissa
Jurnal Perencanaan dan Penelitian Teknik Sipil Vol 4 No 3 (2025): November
Publisher : Universitas Iskandar Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/prince.v4i3.1070

Abstract

Reliable road infrastructure is a vital component for regional connectivity; however, pavement distress on Malikul Adil Street, Langsa City, has emerged as a critical issue that disrupts local transportation efficiency. This study aims to systematically identify existing distress types and quantitatively assess the pavement condition. The study employed a visual survey method using the Pavement Condition Index (PCI) in accordance with the ASTM D6433 standard to provide an objective evaluation. Data were collected by observing and measuring the type, severity, and quantity of distress such as cracking, distortion, and disintegration on sample units along the road section. The analysis yielded an average PCI score of 16.8. According to standard rating scales, this score classifies the road's condition as 'very poor', indicating severe and widespread structural damage that compromises both the safety and comfort of its users. Potholes and raveling were identified as the most dominant distress types, with severity levels ranging from medium to high (M-H). These findings provide a comprehensive and measurable overview of the pavement's actual condition. Practically, this study provides a valid empirical basis for policymakers to establish priorities and devise more effective, efficient, and targeted highway maintenance programs.
Klasifikasi Tanah Lempung Berdasarkan Sistem Uscs (Unified Soil Classification System) Dan Aashto (American Association of State Highway and Transportation Officials) Sabilla, Arissa; Hildayani, Cut Sitti Rafidatul
Jurnal Perencanaan dan Penelitian Teknik Sipil Vol 4 No 3 (2025): November
Publisher : Universitas Iskandar Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/prince.v4i3.1085

Abstract

The fine-grained soil in the Gampong Keutapang Quarry area, Lhoong District, is widely used as embankment material and construction base soil, but to date there is no documented geotechnical characteristic data. This condition poses a risk of construction failure due to the incompatibility of the soil type with its intended use. Therefore, this study aims to identify the physical properties of the clay soil at the location and determine its classification using two international standard systems, namely USCS and AASHTO. The research method uses a quantitative experimental approach through a series of laboratory tests, including the determination of natural water content, specific gravity, sieve analysis, and Atterberg limit tests. The test results show that the soil has an average water content of 39.98%, a specific gravity of 2.619 g/cm³, a liquid limit (LL) of 64.24%, a plastic limit (PL) of 39.98%, and a plasticity index (PI) of 24.25%. The high LL and PI values ​​cause the soil to be classified as MH in the USCS system, namely inorganic silt with high plasticity. Meanwhile, based on the AASHTO system, LL values ​​> 40% and PI > 11% place the soil in the A-7-5/A-7-6 group, indicating subgrade quality with low bearing capacity. The results of this study provide important contributions to the field of geotechnics, particularly in providing baseline information for more sustainable construction planning and infrastructure development.
Mineral Content of Clay Soil and Coffee Husk Ash for Soil Stabilization Applications in Geotechnical Engineering Sabilla, Arissa; Muammar, Rajib; Juanda, Ari
Justek : Jurnal Sains dan Teknologi Vol 8, No 4 (2025): December
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v8i4.35345

Abstract

This study aims to analyze the mineral composition of clay soil and coffee husk ash, as well as to evaluate the effect of coffee husk ash as a stabilizing agent for clay soil. The main problem addressed is the high plasticity of clay soil, which causes volume changes and reduces bearing capacity, making stabilization methods necessary. The research was conducted by collecting clay soil samples from Kebun Kurma Barbate, Aceh Besar, and coffee husk ash from Aceh Tengah. Mineral composition was analyzed using gravimetric, titrimetric, spectrophotometric, and AAS methods, while soil plasticity was examined through Atterberg limits and specific gravity tests. The results indicate that clay soil contains dominant Silica Oxide (SiO₂) at 42.99% and Aluminum Oxide (Al₂O₃) at 5.63%, contributing to its high plasticity. Meanwhile, coffee husk ash contains 8.30% SiO₂ and 5.22% Calcium Oxide (CaO), which play crucial roles in stabilization. The addition of 5– 25% coffee husk ash reduced the plasticity index from 38.42% to 34.29%, increased soil specific gravity from 2.587 g/cm³ to 2.690 g/cm³, and transformed soil classification from clay to silt. These findings confirm the potential of coffee husk ash as an effective, and sustainable stabilizing material for geotechnical engineering applications
Enhancing Cultural Identity Through Academic Collaboration at the Workshop for Documenting the Traditional Architecture of the Tuha Pucok Krueng Mosque in Pidie Jaya Sabilla, Arissa; Lisa, Nova Purnama; Rikza, Rikza; Siregar, Putri Fikadilah; Sinurat, Dian Aswatul; Yosantia, Muhammad Ferah; Juanda, Ari; Muammar, Rajib
ABDIMU: Jurnal Pengabdian Muhammadiyah Vol 5, No 2 (2025): Vol 5 No 2 Desember 2025
Publisher : Universitas Muhammadiyah Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37598/abdimu.v5i2.2583

Abstract

The purpose of this community service activity is to strengthen cultural identity through a construction documentation workshop, addressing the fading cultural identity. The methods used in this community service activity include outreach, workshops, and training. The activity was implemented as part of the SIMPORA XVI 2025 Expo, involving lecturers, students, business actors, and cultural communities. The activities included outreach, design workshops, exhibitions, and interactive dialogue between academics and the community. The results of this activity indicate that academic collaboration can enhance students' understanding of the importance of cultural preservation, encourage active community participation in showcasing works based on local wisdom, and produce building designs that incorporate cultural values through the documentation of the traditional construction of the Tuha Pucok Krueng Mosque. This activity concludes that strengthening cultural identity can be achieved if universities consistently act as community partners in building collective awareness and making a tangible contribution to the sustainability of local culture.
Integration of geotechnical parameters and infrastructure preparedness policy in disaster mitigation in earthquake-prone areas Sabilla, Arissa
Calamity: A Journal of Disaster Technology and Engineering Vol. 3 No. 2: (January) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/calamity.v3i2.2026.2743

Abstract

Background: This study investigates the geotechnical characteristics and seismic response of soils in the Quarry Barbate–Paya Kameng area, Blang Bintang District, Aceh Besar, which lies near the active Seulimum Fault. The research aims to analyze soil behavior under seismic influences through laboratory testing and theoretical calculations. Laboratory tests included determining water content, specific gravity, grain size distribution, and Atterberg limits to classify soil types and evaluate their physical properties. The study also analyzed earthquake acceleration and uplift forces to assess the dynamic response of the soil. Methods: Soil samples were collected from a depth of 10 meters and analyzed for moisture content, specific gravity, particle size distribution, and Atterberg limits to determine their geotechnical properties. Earthquake-induced ground acceleration and uplift forces were then calculated to assess soil behavior under seismic loading. All tests followed standard ASTM procedures to ensure reliable and comparable results. Findings: Results showed that the soil has an average specific gravity of 2.619 and a plasticity index of 38.42%, indicating a highly plastic clay (CH) with low shear strength and high swelling potential. The maximum ground acceleration reached 0.00236 g, while uplift force increased from 0.82 kg to 7.47 kg over 96 hours, suggesting rising pore-water pressure that can reduce effective stress and stability. Conclusion: The findings emphasize the importance of integrating geotechnical results into spatial planning and disaster mitigation policies. This study provides novel insights into linking soil mechanics and seismic risk assessment for infrastructure resilience in earthquake-prone zones. Novelty/Originality of this article: This study provides novel insights by integrating laboratory-based geotechnical analysis with seismic response modeling to evaluate soil behavior near an active fault, offering practical guidance for infrastructure resilience and disaster mitigation in earthquake-prone areas.
Co-Authors Alfisyahrin, Alfisyahrin Ari Juanda Hildayani, Cut Sitti Rafidatul Juanda, Ari Masthura, Masthura Muammar, Rajib Rikza Rikza, Rikza Rizki Damayanti, Rizki Rizky, Sari Sinurat, Dian Aswatul Siregar, Putri Fikadilah Yosantia, Muhammad Ferah