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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Jurnal Rekayasa Sipil dan Desain Journal of the Civil Engineering Forum Borneo Engineering : Jurnal Teknik Sipil Journal of Civil Engineering and Planning (JCEP) Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Teknik Sipil
Syah, Aminudin
Universitas Lampung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Health Professions Medicine & Pharmacology Transportation Other

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Simulasi Gradasi Pasir untuk Perbaikan Sifat Fisik Tanah Lempung Carissa, Caroline Clara; Iswan, Iswan; Syah, Aminudin; Afriani, Lusmeilia
Jurnal Rekayasa Sipil dan Desain Vol 11, No 4 (2023): Edisi Desember 2023
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Tanah ekspansif sering menjadi masalah dalam konstruksi jalan dan bangunan. Siklus kembang susut dapat merusak perkerasan jalan dan fondasi. Di daerah Dusun 3 Umbul Lioh Desa Palembapang, Kalianda terjadi masalah ketika musim hujan tiba, yaitu tanah menjadi lunak dan daya dukungnya menurun, yang dapat menyebabkan masalah dalam pelaksanaan konstruksi. Oleh karena itu, diperlukan usaha untuk memperbaiki tanah tersebut. Perbaikan tanah yang dilakukan yaitu dengan mencampurkan pasir bergradasi baik dengan variasi persentase mulai dari 4%; 8%; 10%; 12% dan 16%. Penelitian ini penting karena menguji perbaikan tanah dengan material bergradasi untuk meningkatkan stabilitas tanah. Berdasarkan hasil uji sifat fisik, tanah diklasifikasikan dalam kategori AASHTO sebagai A-7-5, yang termasuk jenis tanah dengan kategori buruk. Sementara dalam klasifikasi USCS, tanah ini termasuk dalam kategori OH atau MH. Penambahan pasir pada tanah lempung dapat memperbaiki sifat fisik, seperti menurunnya nilai indeks plastisitas dan batas cair, sehingga dapat menurunkan potensi pengembangan. Kadar air mengalami penurunan saat terjadinya penambahan pasir. Perubahan distribusi ukuran partikel tanah dapat memengaruhi aktivitas tanah dan kembang susut saat adanya perubahan kadar air.
Upaya Peningkatan Daya Dukung Tanah Dasar (Subgrade) dengan Menggunakan Campuran Fly Ash, Bottom Ash dan Silika Putri, Silfa Nayyira; Putra, Andius Dasa; Iswan, Iswan; Syah, Aminudin
Jurnal Rekayasa Sipil dan Desain Vol 11, No 3 (2023): Edisi September 2023
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Soil or subgrade is the place where the construction made by technicians for personal and collective interests stands. Before starting a construction, soils that have low bearing capacity, water absorption and high plasticity can be stabilised by soil stabilisation methods. Soil stabilization may involve the use of chemical stabilization materials. This research aims to determine the effect and get the appropriate comparison of the results of the addition of a mixture of fly ash, bottom ash and silica. This research study was conducted using soil samples from Kalianda subdistrict and stabilization materials in the form of fly ash, bottom ash and silica matured for 24 hours. Tests were conducted at the Soil Mechanics Laboratory and physical and mechanical properties were tested.. Clay soils classified as A-7-5 (AASHTO) and OH (USCS) mixed with 4 different compositions of stabilising materials had different results. Of the 4 compositions, the mixture that has the largest bearing capacity value is only silica. Because the results of the CBR test on the mixture that added silica were greater than the mixture using only fly ash and bottom ash. Fly ash, bottom ash and silica gel are easily found or affordable, but the use of silica can increase costs due to its relatively expensive price, inversely proportional to the very affordable price of fly ash and bottom ash.  
Geotechnical investigation, landslide mechanism and countermeasure on the road above the soft-medium clay Syah, Aminudin; Fikri Alami
Journal of Civil Engineering and Planning (JCEP) Vol. 5 No. 1 (2024)
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v5i1.9373

Abstract

A landslide event occurred in Sukarami, Lahat Regency, in early 2024. This study investigates the landslide mechanism, analyzes the influence of groundwater level rise and load on slope stability, and proposes a management concept. The methodology employed a landslide survey, soil investigation, and limit equilibrium-based stability analysis. Field investigations and surveys revealed that the landslide resulted from a decrease in the shear strength parameter of the surrounding soil layer triggered by rainfall and road drainage runoff. The slip plane, located within a soft to medium consistency clay layer, exhibits high susceptibility to water-induced instability. Numerical simulations demonstrated a negative correlation between groundwater level and slope safety factor, particularly when the water table reaches the critical slip plane. The implementation of a combined gabion, DPT, and minipile reinforcement system can enhance slope stability and elevate the safety factor to meet established standards. Notably, the addition of vehicle loads up to 30 kN/m2 exerted an insignificant influence on slope stability.
Evaluasi dan Analisis Stabilitas Lereng Pasca Longsor Datarajan, 24 Mei: Studi Geoteknik dan Penanganan Segera Syah, Aminudin; Alami, Fikri
Jurnal Teknik Sipil Vol. 18 No. 1 (2025): Juni 2025
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/1f7skh10

Abstract

A landslide that occurred on May 24, 2024, in Pekon Datarajan, Ulubelu District, Tanggamus, Lampung, caused significant disruption to provincial road access and resulted in material losses. This study aims to assess the post-failure slope stability through field geotechnical investigation and numerical analysis using the Limit Equilibrium Method (LEM), and to propose immediate countermeasures. The slope materials consist of MH (inorganic silt) and ML (elastic silt) with high moisture content and moderate to high swelling potential. The lithology is dominated by montmorillonite clay, which has hygroscopic characteristics, making it highly vulnerable to water infiltration that reduces shear strength and increases the risk of slope failure. Stability analysis indicates a post-failure factor of safety (FoS) of 1.36 (static loading) and 1.03 (dynamic loading), which decreases to 1.07 beneath raised groundwater conditions. Recommended immediate mitigation includes surface runoff control, the construction of impermeable drainage systems, the sealing of cracks using impermeable materials, and the installation of temporary slope reinforcements such as sheet piles. The implementation of these measures increased the FoS to 1.61 (static loading) and 1.16 (dynamic loading). This study provides a technical basis for the rapid and effective mitigation of landslides in areas with similar geological and hydrological conditions.
Pelatihan Pembuatan Pupuk dan Monitoring Suhu Menggunakan Alat Pembuat Pupuk Kompos Telaumbanua, Mareli; Karo-Karo, Pulung; Syah, Aminudin; Telaumbanua, Syukur; Indriyawati, Agapetalia
Jurnal Pengabdian Kepada Masyarakat (JPKM) TABIKPUN Vol. 5 No. 3 (2024)
Publisher : Faculty of Mathematics and Natural Sciences - Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpkmt.v5i3.180

Abstract

Pupuk kompos berbahan limbah pertanian/peternakan belum termanfaatkan secara optimal oleh petani/peternak. Mitra kelompok tani di Desa Rejomulyo memiliki pengetahuan dan keterampilan yang kurang dalam pembuatan pupuk kompos. Selain itu, proses pembuatan pupuk kompos yang ditandai dengan kenaikan suhu sulit dipantau. Oleh karena itu, petani memerlukan prosedur tahapan pengolahan pupuk kompos dengan monitoring suhu. Tujuan kegiatan ini adalah meningkatkan pengetahuan dan keterampilan melalui pengolahan pupuk kompos dengan menerapkan alat pembuat pupuk kompos. Metode pelaksanaan kegiatan terdiri dari sosialisasi, diskusi, tanya jawab, demonstrasi dan praktik. Evaluasi kegiatan pengabdian menunjukkan adanya peningkatan pengetahuan mitra kelompok sebesar 44,85% dan keterampilan sebesar 50,00%. Dengan demikian, pengabdian ini telah berhasil meningkatkan pengetahuan dan keterampilan mitra dalam pembuatan pupuk kompos dan aplikasi alat.
Co-Authors Ahmad Zakaria Ahmad Zakaria Ahmad Zakaria Andius D Putra Andius D. Putra Andius Dasa Putra Andius Dasa Putra Andius Dasa Putra Badruzzaman Aji Carissa, Caroline Clara Devrisvansyah Irwan Erfani, Sandri Faris, Fikri Fikri Alami Fikri Alami Firman Syahruli Fitri Indah Sari Halsa Dinar Pangestu Hayu Nurfaidah I Iswan Ibnu Abi Laila Ilham Dani Ilham Dani Indriyawati, Agapetalia Iswan Iswan Iswan Iswan Iswan Iswan Lusmeilia Afriani Lusmeilia Afriani M Irvani Azis Mareli Telaumbanua martha vepti dhina Muhammad Desyan Ichsani Muhammad Nur Kholiq Nabila H Nanda Dwi Wahyuni Nandi Haerudin Pulung Karo-Karo Putri, Silfa Nayyira Restu Ningsih Revi Melianita S. Indira Adhi Ariana S. Tantri Handayani Idrus Salsabila Atalia Sadil Septriza Auli Telaumbanua, Syukur Teuku Faisal Fathani