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All Journal Jurnal Teknik ITS Jurnal Teknik Industri Terintegrasi (JUTIN)
Frieska Ariesta Syafnijal
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Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Studi Eksperimental Pembuatan Ekosemen dari Abu Sampah dan Cangkang Kerang sebagai Bahan Alternatif Pengganti Semen Frieska Ariesta Syafnijal; Dyah Sawitri
Jurnal Teknik ITS Vol 2, No 2 (2013)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.202 KB) | DOI: 10.12962/j23373539.v2i2.4287

Abstract

Telah dibuat ekosemen dari bahan abu sampah organik dan abu cangkang kerang. Sampah organik dibakar dengan insinerator pada suhu 1000oC. Abu cangkang kerang dipanaskan dengan furnace pada suhu 700oC. Hasil pengujian komposisi awal XRD (X-Ray Diffraction), Abu sampah organik mengandung 69,7% CaCO3; 12,1% KCl; 4% Cd0.15Gd0.85; 3% SiO2; 8,1% Fe ( Se0.5Te0.5) dan 3% Al2ErGe2, Abu cangkang kerang mengandung 100% CaCO3. Ditentukan tiga variasi jumlah komposisi Abu sampah:Abu cangkang kerang yaitu Ekosemen A (58,2%:40%); Ekosemen B (49,1%:49,1%) dan Ekosemen C (54,01%:44,09%). Sebagai variabel kontrol digunakan Semen Portland jenis OPC (Ordinary Portland Cement) merek ‘Semen Gresik’. Dilakukan pengujian fisika yaitu kuat tekan mortar dan densitas serbuk. Pengujian XRD dilakukan untuk mengetahui komposisi kimia dari ekosemen. Dari hasil pengujian fisika didapat ekosemen B paling mendekati nilai ‘Semen Gresik’ OPC yaitu kuat tekan 3 hari (7,2 kg/cm2) dan densitas serbuk (2,535 gr/ml).   
Penerapan Lean Manufacturing untuk Meminimasi Waste pada Produksi Udang Beku Saraswati, Ni Nyoman Ayu; Syafnijal, Frieska Ariesta
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.51097

Abstract

The Factory faces the significant challenge of managing waste to improve productivity and reduce operational costs. This study specifically addresses waste generated during the production of frozen shrimp, a high-value Indonesian fishery commodity. This paper is aim to analyze and minimize the waste using the Lean Manufacturing. The Lean Manufacturing was executed through three key steps: Current State Value Stream Mapping (VSM), Classification of production activities, and Identification and analysis of specific wastes.The results indicate that implementing the prescribed Lean manufacturing methods can significantly address the company's waste issues, leading to both increased productivity and a substantial reduction in costly waste expenses. The implementation at PT XYZ was based on aligning theoretical Lean concepts with empirical field data, which is intended to serve as a valuable alternative learning resource for future development.
Co-Authors Dyah Sawitri Saraswati, Ni Nyoman Ayu