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All Journal KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA KARST : Jurnal Pendidikan Fisika dan Terapannya
Asriani Asriani
UIN Alauddin Makassar
Computer Science & IT Education Materials Science & Nanotechnology Physics Other

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ANALISIS KUALITAS BITUMEN DI TAMBANG KABUNGKA PIT B PT. WIJAYA KARYA BITUMEN SULAWESI TENGGARA Asriani Asriani; Siti Salmawati; Khadijah Khadijah
Karst : JURNAL PENDIDIKAN FISIKA DAN TERAPANNYA Vol 5 No 2 (2022): Karst: Jurnal Pendidikan Fisika dan Terapannya
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/karst.v5i2.1560

Abstract

Bitumen di tambang B Kabungka PT. Wijaya Karya Bitumen yang secara administratif berlokasi di desa Banabugi kecamatan Pasarwajo kabupaten Buton provinsi Sulawesi Tenggara telah dikarakterisasi untuk mengetahui kualitas bitumennya. Kualitas yang dianalisis berupa kadar bitumen menggunakan metode Shoklet dan kadar air menggunakan metode Denstrak serta perhitungan densitas aspal dengan menerapkan prinsip Archimedes. Hasil pengujian untuk enam titik yang berbeda diperoleh kadar air dan kadar bitumen secara berturut-turut sebesar 5,20% dan 17,08%, 9,00% dan 12,81%, 9,60% dan 14,95%, 13,60% dan 16,11%, 7,80% dan 22,36%, serta 5,00% dan 23,90%. Selanjutnya densitas bitumen diketahui sebesar 1,83 gr/ml yang diperoleh melalui pengukuran volume dan massa masing-masing sebanyak dua kali pengukuran untuk setiap titik penambangan. Secara umum, berdasarkan karakterisasi yang dilakukan diketahui bahwa kualitas bitumen memenuhi standar perusahaan, yakni maksimal 16% untuk kadar air dan minimal 20% untuk kadar bitumen. Dengan demikian, bitumen yang terdapat di Tambang B Kabungka PT. Wijaya Karya Bitumen layak untuk dipasarkan.
Composite of Hemp Fiber and Lead Acetate Epoxy Resin as an Alternative X-Ray Radiation Shielding Material Nurlinda Jusli; Sri Zelviani; Sefrilita Risqi Adikaning Rani; Hernawati Hernawati; Asriani Asriani; Sulaiman Yahirah Muhammad; Dwi Febri Isradati
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 8 No 01 (2023): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v8i01.252

Abstract

Research on hemp fiber composites with epoxy resin matrix and lead acetate as an alternative material for X-ray radiation shielding has been conducted to determine the optimal composition of radiation shielding samples made from hemp fiber, epoxy resin, and lead acetate. The method used to make composite samples with six different designs, namely using a ratio of 4 gams, eight gams, and 12 gams of hemp fiber to 80 gams and 160 gams of resin. The lead acetate used in each composition is 2.5 gams. This study carried out three measurement processes: density, attenuation, and absorption. Density measurements were carried out by measuring the volume and mass of the sample. In contrast, attenuation and absorption measurements were carried out using a mobile X-ray aircraft with a Piranha multi-X-ray meter detector. In the three measures, the highest value was obtained in composition VI, namely with 12 gams of hemp fiber, 160 gams of epoxy resin, 80 gams of catalyst, and 2.5 gams of lead astate. The density value obtained was 1.120 g/cm3. The sample with this composition can absorb 71.22% (1.24580 cm-1) of radiation at 40 kV, absorb 66.91% (1.10621 cm-1) at 60 kV and 60.22% (0.92191 cm-1) of radiation absorbed at 81 kV voltage. Therefore, it can be concluded that the higher resin and hemp used, the more excellent density value obtained—the geater density of the sample, the geater value of attenuation and absorption.
Co-Authors Dwi Febri Isradati Hernawati Hernawati Khadijah Khadijah Nurlinda Jusli Rani, Sefrilita Risqi Adikaning Siti Salmawati Sri Zelviani Sulaiman Yahirah Muhammad