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Experimental Study of The Influence Use of Beeswax Against The Mechanical and Thermal Properties of Concrete Fazri Amir; Banta Cut; Rayan Rayan; Baidatul Khoir; Nasruddin Nasruddin; Muhammad Amin
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 14, No 1 (2020): SINTEK JURNAL
Publisher : University of Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.14.1.22-26

Abstract

The economy of the whole world developed so quickly, encourage increased consumption of energy gradually. Energy consumption in the building sector has also increased with the demands of society in thermal comfort in the room. With the hot weather, the influence of the temperature in the room will rise. Some things that need to be reviewed in the manufacture of concrete in the place are the price is relatively low, easy to obtain, has high compressive strength, and has resistant to any environmental conditions. However, some problems still need to be resolved in the development of the Phase Change Material (PCM) composite that has a stable form. The proposed PCM has a thermal comfort temperature (16-26 ℃). The main purpose of this research was to investigate the influence of addition beeswax as a water-resistant mixture on the mechanical and thermal properties of concrete. In this research, the cement used was ordinary Portland Cement and replaced some of its Weight with paraffin wax in the mixture. The results of the research with the use of 10, 20 and 30% beeswax in a mixture of a concrete show that the increase in the content of Beeswax resulted in a decrease in the compressive strength of 22% and an increase in heat absorption by the concrete between without PCM with the Concrete-PCM is obtained by 10%.
Pemetaan Laju Korosi Atmosferik Baja Konstruksi Di Industri Pabrik Kelapa Sawit; (Studi Kasus di PT Ensem Sawita) Muhammad Zulfri; Nurdin Ali; Syarizal Fonna; Syifaul Huzni; Banta Cut; Husaini .; Sri Mulyati
JURUTERA - Jurnal Umum Teknik Terapan Vol 5 No 01 (2018)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v5i01.724

Abstract

Penyebab utama kegagalan dini infrastuktur baik terhadap sarana perumahan rakyat, fasilitas umum maupun industri adalah korosi. Terkait dengan industri yang tumbuh dan berkembang dengan pesat di Provinsi Aceh terutama Pabrik Kelapa Sawit (PKS), eksistensinya patut diperhatikan menyangkut dampak lingkungan yang ditimbulkan akibat operasionalnya seperti limbah padat, cair dan gas. Limbah fasa gas terjadi karena penguraian zat organik yang terkandung dalam limbah cair, hasil pembakaran bahan bakar pada ketel uap (boiler). Sedangkan limbah fasa cair sebagian besar dihasilkan dari unit proses yang berasal dari pengembunan uap air. Kondisi ini menjadikan infrastruktur khususnya baja dilingkungan PKS menjadi lebih rentan terhadap serangan korosi. Penelitian ini bertujuan untuk menganalisa dampak operasional PKS terhadap korosi infrastruktur. Korosi infrastruktur difokuskan pada pengukuran tingkat korosifitas atmosferik pada baja konstruksi PKS dan infrastuktur pemukiman di lingkungannya. Beberapa baja yang dipakai oleh pabrik akan dipilih menjadi spesimen. Laju korosi dihitung dengan metode kehilangan massa dengan merujuk standar ASTM G50 Lokasi PKS dipilih di PKS PT Ensem Sawita. Hasil keseluruhan setelah dilakukan spesimen uji dilakukan eksposure selama 4 (empat) bulan lokasi tersebut, menunjukkan tingkat laju korosi yang terjadi pada 5 (lima) jenis baja konstruksi tersebut masih berada dalam batas ketahanan korosi relatif atau relative corrosion resistance nya dan masih digolongkan dalam kategori outstanding (< 1mpy). Sehingga pemakaian baja konstruksi dengan jenis baja plat strip, baja siku, baja silinder, baja plat pasaran dan baja karbon rendah relatif aman dilingkungan pabrik kepala sawit dan sekitarnya.
Study of Atmospheric Corrosion of Structural Steel Surrounding the Palm Oil Industry in the Region of Eastern Coastal and Northern Aceh Cut, Banta; Muhammad Zulfri; Syarizal Fonna; Syifaul Huzni; Ferry Safriwardy; Abdul Rahman; Budi Istana
JURNAL SURYA TEKNIKA Vol. 11 No. 2 (2024): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v11i2.8478

Abstract

Corrosion is the primary cause of premature infrastructure damage, affecting everything from homes and public spaces to industrial facilities, including the rapidly expanding palm oil industry in Aceh, particularly along its eastern and northern coasts. This rapid growth necessitates careful consideration of environmental impacts, including pollution, which can also degrade air quality. Pollutants increase the susceptibility of steel-reinforced structures to atmospheric corrosion. This research, therefore, investigates atmospheric corrosion of structural steel at several palm oil processing plants: PTPN 1 Tanjung Seumantoh in Aceh Tamiang, PT Ensem Sawita and PT Anugerah Fajar Rejeki (AFR) in East Aceh, and PTPN 1 Cot Girek in North Aceh.This study measures the atmospheric corrosion rate of structural steel typically used in industrial and nearby residential settings. Five steel types were tested: strip, angular, cylindrical, commercial plate, and low-carbon steel. Following the American Standard Testing and Material-G50 (ASTM G50), the mass loss method was used to calculate corrosion rates. After six months of exposure, all five steel types exhibited corrosion rates below 0.7 mils per year (mpy). This result showed that the relative corrosion resistance of structural steel is on outstanding category (<1mpy).