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All Journal JISO : Journal of Industrial and Systems Optimization Nusantara Hasana Journal JITU (Jurnal Ilmiah Teknik Unida) Jurnal Teknologi Maritim
Luqman Cahyono
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Nursing Transportation

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Analisis Kelayakan Dalam Pemanfaatan Limbah Abu Insinerator Rumah Sakit Sebagai Substitusi Agregat Halus Paving Block Luqman Cahyono; Agung Prasetyo Utomo; M. Rizal Fahmi; Novi Eka Mayangsari; Ghea Abbyah Nur
Jurnal Ilmiah Teknik Unida Vol. 5 No. 1 (2024): Juni
Publisher : Mitra Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/jitu.v5i1.751

Abstract

Abstrak Abu insinerator rumah sakit merupakan kategori limbah B3 dari sisa pembakaran. Timbulan abu insinerator yang dihasilkan salah satu rumah sakit yang ada disurabaya berdasarkan wawancara dalam sehari bisa mencapai kurang lebih 0,0161 m3/hari. Selama ini limbah abu insinerator rumah sakit dibuang oleh pihak ketiga ke secure landfill tanpa ada proses pengolahan. Potensi timbulan dari limbah ini sangat besar mengingat jumlah rumah sakit dan pasien yang sakit semakin banyak tiap tahunnya. Penggunaan abu insinerator rumah sakit dilakukan bertujuan untuk mereduksi limbah B3 menjadi material baru solid dan stabil (tidak mudah terurai) yaitu sebagai campuran pada paving blok. Metode penelitian ini dengan eksperimen langsung. Mix design yang digunakan 1 Semen : 4 Pasir dengan persentase limbah abu sebesar 0%, 7%, 9% dan 12% serta faktor air semen 0,40. Pengujian XRF abu insinerator rumah sakit memiliki kandungan unsur Ca, Fe, Si yang sama dengan kandungan pasir, sedangkan ditemukan unsur logam berat  Cr, Cu dan Zn merupakan limbah B3 perlu diuji lanjut Toksisitasnya, Hasil pengujian rata-rata kuat tekan berdasarkan SNI 03-0691-1996 untuk persentase 0% = 42,14 Mpa mutu kelas A, 7% = 37,40 Mpa mutu kelas B , 9% = 38,38 Mpa mutu kelas B dan 12% = 24,83 Mpa mutu kelas B. Berdasarkan hasil uji TCLP row material awal sebelum produk dilakukan solidifikasi dan stabilisasi menjadi paving berbahan limbah abu insinerator dinyatakan kandunga Cr, Cu dan Zn nilainya telah memenuhi baku mutu TCLP A, TCLP B dan TCLP C.
ANALISIS KEKUATAN BANGKU TAMAN BERBAHAN CEMENTITIOUS COMPOSITE DENGAN CAMPURAN FLY ASH DAN PASIR LIMBAH SANDBLASTING Fahmi, M. Rizal; Wiwik Dwi Pratiwi; Fitroh Resmi; Luqman Cahyono; Endang Fitria Rahmawati; Hanum Wardah Anggraeni
JISO : Journal of Industrial and Systems Optimization Vol. 8 No. 1 (2025): Juni 2025
Publisher : Universitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/jiso.v8i1.67-75

Abstract

ABSTRAK Meningkatnya kebutuhan akan ruang terbuka yang nyaman dan berkelanjutan mendorong inovasi dalam pemilihan material furnitur luar ruangan. Penelitian ini bertujuan untuk mengembangkan bangku taman berbahan cementitious composite ramah lingkungan dengan memanfaatkan limbah industri berupa fly ash, pasir sandblasting, dan fiberglass sebagai bahan penguat. Cementitious composite yang kuat, tahan cuaca ekstrem, tahan terhadap serangan serangga serta jamur serta fleksibilitas dalam desain membuatnya menjadi pilihan ideal untuk penggunaan di luar ruangan. Empat variasi campuran dibuat dengan substitusi fly ash sebesar 0%, 20%, 30%, dan 40%. Pembuatan spesimen sampel uji tekan dan tarik dilakukan pada 4 variasi dengan 3 kali replikasi untuk masing-masing varian. Hasil cetakan didiamkan terlebih dahulu selama 24 jam kemudian dilanjutkan dengan proses curing selama 28 hari. Seluruh spesimen uji tekan dan tarik diuji dengan menggunakan standar ASTM C-39 dan C-307. Pengujian kuat tekan dan tarik dilakukan untuk menentukan varian dengan performa mekanik terbaik. Hasil menunjukkan bahwa substitusi fly ash sebesar 20% menghasilkan kekuatan tekan dan tarik tertinggi, yaitu 30,27 MPa dan 4,16 MPa. Desain bangku taman selanjutnya disimulasikan menggunakan software Fusion 360 dengan masukan data material dari hasil uji laboratorium. Analisis menunjukkan bahwa desain memiliki nilai safety factor minimum 3,46 dan nilai von misses stress maksimum 0,884 MPa yang berada jauh di bawah batas kerusakan material. Dengan demikian, bangku taman yang dirancang terbukti aman dan layak digunakan, sekaligus berkontribusi terhadap pengurangan limbah industri dan peningkatan estetika ruang publik secara berkelanjutan. ABSTRACT The increasing need for comfortable and sustainable outdoor spaces drives innovation in the selection of outdoor furniture materials. This study aims to develop an environmentally friendly cementitious composite park bench by utilizing industrial waste in the form of fly ash, sandblasting sand, and fiberglass as reinforcing materials. Strong cementitious composite, resistant to extreme weather, resistant to insect and fungal attacks and flexibility in design make it an ideal choice for outdoor use. Four variations of the mixture were made with fly ash substitution of 0%, 20%, 30%, and 40%. The manufacture of compressive and tensile test sample specimens was carried out on 4 variations with 3 replications for each variant. The mold results were left for 24 hours first and then continued with a curing process for 28 days. All compressive and tensile test specimens were tested using ASTM C-39 and C-307 standards. Compressive and tensile strength tests were carried out to determine the variant with the best mechanical performance. The results showed that 20% fly ash substitution produced the highest compressive and tensile strengths, namely 30.27 MPa and 4.16 MPa. The park bench design was then simulated using Fusion 360 software with input of material data from laboratory test results. The analysis shows that the design has a minimum safety factor value of 3.46 and a maximum von misses stress value of 0.884 MPa which is far below the material damage limit. Thus, the designed park bench is proven to be safe and suitable for use, while contributing to the reduction of industrial waste and the improvement of the aesthetics of public spaces in a sustainable manner.
Analysis Of Flexural Resistance And Environmental Feasibility Of Ferrocement Concrete Slabs From Fly Ash And Sandblasting Waste Luqman Cahyono; Dwi Pratiwi, Wiwik; Fardina, Firda; Widiana, Dika Rahayu; Carina, Annisa'
Jurnal Teknologi Maritim Vol. 8 No. 1 (2025): Jurnal Teknologi Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v8i1.42

Abstract

Sandblasting waste from the shipbuilding industry and fly ash waste from industry and electric steam power plants in Indonesia are relatively high in quantity, are B3, and can potentially cause serious environmental pollution. This research aims to utilize this waste as material for ferrocement concrete, where the SiO2 and Al2O3 content from fly ash replaces some of the cement, silica sand from sandblasting waste replaces sand, and additional wire mesh as reinforcement. The method used is a quantitative experiment, where the material to be used is tested for gradation and TCLP. The finished ferrocement concrete is tested for flexural strength. The test results show that the raw material meets the gradation standards in SNI 03 2834 2000, as well the TCLP test results which show that the B3 heavy metal content is Barium, Zinc, and Copper in the sandblasting waste value is below the quality standards of PP No. 22 of 2021 Appendix XI so that all materials can be used for mix designs. The mix design created has a composition ratio of 1S:1.5PB, 1S:1.5PB:50AT, 1S:2PB, and 1S:1PB:50AT. The 1S:2PB ratio composition has the highest average flexural strength, namely 17.46 MPa, which is suitable for light vertical load construction work
PEMANFAATAN LIMBAH SANDBLASTING INDUSTRI PERKAPALAN MENJADI PRODUK BATA BETON PEJAL MENDUKUNG MATERIAL HIJAU Nur Fajar Aprilia Sari; Luqman Cahyono; Amanda Rosalina; Maret’atus Sholihah; Ria Rismawati; Ovi Prina Gastriani; Muhammad Akbar Febianto
Nusantara Hasana Journal Vol. 5 No. 4 (2025): Nusantara Hasana Journal, September 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v5i4.1705

Abstract

Indonesia, as a maritime country, has industrial activities that generate a large amount of waste. One of the largest waste-producing sectors is the shipping industry, particularly from ship maintenance and repair activities in shipyards. In this industry, there is a process called sandblasting, which is used to clean ship surfaces from rust, old paint, and other contaminants. The silica sand used in this sandblasting process is classified as hazardous and toxic waste (B3 waste). This waste poses a risk of environmental pollution if not properly managed.The research problem in this study is how to utilize sandblasting waste as an alternative material in the production of solid concrete bricks. The objective of the study is to process this waste into technically and environmentally feasible solid concrete bricks. The methods used include chemical characterization of raw materials using XRF, making test specimens in the form of 50 × 50 × 50 mm cubes, and conducting compressive strength and TCLP (Toxicity Characteristic Leaching Procedure) tests. The results show that the A2 variation produced a compressive strength of 142 kg/cm², exceeding the SNI 03-0349:1989 standard for quality I concrete bricks, and the TCLP test results indicated that the levels of Cu and Cr met the quality standards set by Government Regulation No. 22 of 2021. Therefore, solid concrete bricks made from hazardous and toxic waste are considered feasible as an environmentally friendly alternative construction material.
Co-Authors Amanda Rosalina Annisa' Carina Dika Rahayu Widiana Dwi Pratiwi, Wiwik Endang Fitria Rahmawati Fardina, Firda Fitroh Resmi Ghea Abbyah Nur Hanum Wardah Anggraeni M. Rizal Fahmi M. Rizal Fahmi Maret’atus Sholihah Muhammad Akbar Febianto Novi Eka Mayangsari Nur Fajar Aprilia Sari Ovi Prina Gastriani Ria Rismawati Utomo, Agung Prasetyo Wiwik Dwi Pratiwi