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Dedi Purwanto Indra Kusuma
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RESWARA: Jurnal Riset Ilmu Teknik
Published by Lembaga Penelitian dan Pendidikan (LPP) Kalibra
ISSN : -     EISSN : 30259444     DOI : https://doi.org/10.70716/reswara
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation
RESWARA: Jurnal Riset Ilmu Teknik is a leading scholarly platform that examines the strategic role of engineering disciplines in advancing the Sustainable Development Goals (SDGs). The journal is dedicated to publishing recent research, innovations, and engineering solutions that support sustainable development. The editorial board welcomes manuscripts based on theoretical frameworks and empirical research. The journal scope covers scientific knowledge and research-based information, including applied research and recent developments in engineering research and development. The primary focus includes Civil Engineering and Spatial Planning, Industrial Engineering, Electrical Engineering and Informatics, Earth Science Technology, and Naval Architecture. All manuscripts published in RESWARA undergo a double-blind peer review process. The final decision on manuscript acceptance rests with the Editorial Board, based on recommendations from independent peer reviewers.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 72 Documents
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Karakterisasi Material Geopolimer Berbasis Fly Ash, Kapur Padam, dan Tanah Laterit Muh. Sayfullah S; Antonius Antonius; Prabowo Setiyawan
RESWARA: Jurnal Riset Ilmu Teknik Vol. 4 No. 3 (2026): RESWARA: Jurnal Riset Ilmu Teknik, July 2026
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/reswara.v4i3.581

Abstract

The development of environmentally friendly construction materials has become one of the key efforts to reduce dependence on Portland cement, which significantly contributes to global carbon emissions. This study aims to characterize the constituent materials of a geopolymer system based on fly ash, hydrated lime, and lateritic soil sourced from Gowa Regency, South Sulawesi, and Baubau City, Southeast Sulawesi, Indonesia. The research employed a quantitative experimental approach through the analysis of the physical, chemical, and microstructural characteristics of the materials. Physical characterization included moisture content, specific gravity, Atterberg limits, and particle size distribution tests, while chemical and microstructural characterization was conducted using X-Ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM). The results indicated that the lateritic soils were predominantly composed of fine particles, with Al₂O₃ as the major component in the Gowa sample (49.38%) and SiO₂ as the dominant component in the Baubau sample (67.82%). The fly ash samples exhibited high contents of SiO₂, Al₂O₃, and Fe₂O₃, while the Jeneponto fly ash contained a higher CaO content than the Baruta fly ash. SEM observations revealed particle morphologies that have the potential to support the geopolymerization process. Overall, the combination of lateritic soil, fly ash, and hydrated lime demonstrates favorable characteristics for utilization as locally sourced geopolymer raw materials, offering a promising alternative for sustainable and environmentally friendly construction materials.
Optimasi Biaya Distribusi dan Penentuan Lokasi Gudang Baru di PT. XYZ Menggunakan Metode Centre of Gravity Agus Wahyudi; Tri Ngudi Wiyatno; Ikhsan Romli
RESWARA: Jurnal Riset Ilmu Teknik Vol. 4 No. 3 (2026): RESWARA: Jurnal Riset Ilmu Teknik, July 2026
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/reswara.v4i3.647

Abstract

This research is motivated by the high cost of distribution which is the main problem in the logistics system at PT. XYZ as a manufacturing company with an extensive distribution network. This research aims to analyze the current distribution process, determine the optimal warehouse location, and measure the potential distribution cost efficiency that the company can obtain. The theoretical foundations used include logistics management, distribution systems, distribution costs, warehouse location determination, distribution optimization, and the Center of Gravity (CoG) method. The research method used is a descriptive quantitative method with data collection techniques through observation, interviews, documentation, and literature studies. The data analyzed includes customer coordinate points, distribution volume, distribution distance, and distribution costs. Data processing is carried out using the Center of Gravity (CoG) method with the help of Microsoft Excel to determine the most optimal warehouse location point. The results of the study show that the recommended warehouse location is in the Salatiga area, Central Java. The location was able to reduce the total distribution cost from IDR 4,272,425,000 to IDR 3,798,400,000, resulting in savings of IDR 474,025,000, able to reduce distribution costs by 11.09%. Thus, the Center of Gravity (CoG) method is proven to provide a more strategic alternative to warehouse locations and can increase the efficiency of the company's distribution costs.

Page 8 of 8 | Total Record : 72

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