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All Journal Jurnal Sains dan Seni ITS Jurnal Neutrino Teknosains: Media Informasi Sains dan Teknologi JOURNAL ONLINE OF PHYSICS Jurnal Pendidikan Fisika KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Fisika dan Terapannya
Rani, Sefrilita Risqi Adikaning
Universitas Islam Negeri Alauddin Makassar
Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Physics

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UJI LAJU KOROSI DENGAN MENGGUNAKAN INHIBITOR DAUN KELOR UNTUK BESI HOLLOW (BAJA GALVALUM) DALAM MEDIUM AIR HUJAN Muh. Yusuf; Rahmaniah Rahmaniah; Sefrilita Risqi Adikaning Rani
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 3 (2023): JOP (Journal Online of Physics) Vol 8 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i3.25215

Abstract

Telah dilakukan penelitian yang bertujuan untuk mengetahui efisiensi ekstrak daun kelor dalam menghambat laju korosi pada besi hollow (baja galvalum) dengan menggunakan metode kehilanagn massa (Mass Loss), untuk mengetahui pengaruh variasi konsentrasi inhibitor ekstrak daun kelor terhadap laju korosi, mengetahui pengaruh waktu perendaman terhadap laju korosi dan untuk mengetahui waktu perendaman terhadap efisiensi inhibisi, metode yang digunakan pada penelitian ini adalah metode kehilangan massa (Mass Loss). Adapun hasil penelitian yang telah dilakukan, ekstrak daun kelor sebagai penghambat laju korosiyang digunakan sebagai inhibitor pada besi hollow (baja galvalum) dengan menggunakan medium air hujan dengan waktu perendaman 5,15 dan 25 hari dengan variasi konsentrasi 400 ppm dan 600 ppm. Hasil yang didapatkan pada sampel tanpa inhibitor pada waktu perendaman 5,15 dan 25 hari berturut turut 153,773 mpy, 11,539 mpy dan 0,483 mpy, Hasil nilai laju korosi pada penambahan inhibitor konsentrasi 400 ppm pada waktu perendaman 5,15 dan 25 hari berturut turut 135, 256 mpy, 9,929 mpy dan 0,161 mpy, Hasil nilai laju korosi pada penambahan inhibitor konsentrasi 400 ppm pada waktu perendaman 5,15 dan 25 hari berturut turut 133,646 mpy, 2,415 mpy dan 0,161 mpy. Hasil nilai efisiesnsi inhibisi pada sampel tanpa penambahan inhibitor berturut turut 12 % dan 12,8 %, hasil nilai efisiesnsi inhibisi pada sampel penambahan inhibitor konsentrasi 400 ppm berturut turut 91 % dan 98 %, %, hasil nilai efisiesnsi inhibisi pada sampel penambahan inhibitor konsentrasi 600 ppm sebesar 99 %. Kata Kunci : Korosi, Inhibitor, Laju Korosi, Konsentrasi, Waktu Perendaman    
PENGARUH PENAMBAHAN CaCO3 SEBAGAI FILTER PADA SEMEN OPC (ORDINARY PORTLAND CEMENT) TERHADAP PERFORMA SETTING TIME DAN KUAT TEKAN (STUDI KASUS PT. SEMEN INDONESIA) Sefrilita Risqi Adikaning Rani; Nurlailiyah Isnaini
JFT : Jurnal Fisika dan Terapannya Vol 7 No 2 (2020): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v7i2.17486

Abstract

Research has been carried out on the effect of adding CaCO3 as a filler in OPC cement (Ordinary Portland Cement) on setting time performance and compressive strength. The purpose of this study was to determine the effect of adding CaCO3 as a filler on the compressive strength and setting time of OPC cement. The principle of this experiment is the addition of CaCO3 to each of the OPC cement samples, after which the paste is tested for setting time with the Vicat tool. Mortar samples were made to be tested for compressive strength using a compressive strength test equipment. The results of the addition of CaCO3 as a filler in OPC cement include, the optimum value was obtained when the addition of CaCO3 was 5.5% based on the results of linear interpolation with a blank ratio. However, it is safer if the optimum value used as a reference for PT Semen Indonesia (Persero)Tbk is 5.4%. The addition of CaCO3 to OPC cement can save production costs in making OPC cement. The value of setting time and compressive strength obtained still meet the standards set by PT Semen Indonesia (Persero) Tbk.
STUDI SIFAT MEKANIK KOMPOSIT PEG (POLYETHYLENE GLYCOL) - 4000 PENAMBAHAN 10 WT% SiO2 QUARTZ DARI PASIR ALAM DENGAN MENGGUNAKAN DYNAMIC MECHANICAL ANALYSIS (DMA) Sefrilita Risqi Adikaning Rani
JFT : Jurnal Fisika dan Terapannya Vol 8 No 1 (2021): JUNI
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i1.21134

Abstract

The mechanical properties of (Polyethylene glycol) PEG4000 +10 wt% SiO2 have been investigated using DMA (Dynamic Mechanical Analysis). SiO2 processed from natural sand was added as much as 10 wt % SiO2 as a filler to the composite and PEG-4000 as a matrix. The results show that the addition of SiO2 filler makes the mechanical properties of the PEG-4000 polymer as a matrix increase when influenced by temperature and frequency including shear modulus (G') and tensile modulus (E'). Composites (PEG4000 + 10wt% SiO2 quartz) are more resistant to tensile loads when viewed from their tensile modulus.
Co-Authors Ananda Anindia Putri Asriani Asriani Cindi Regita Cahyani Dirwan Dirwan Dwi Febri Isradati Fira Yurdanianti fitriyanti fitriyanti Hernawati Hernawati Hernawati HERNAWATI HERNAWATI Hernawati Hernawati Hernawati Hernawati Ika Widya Wahyuningsih Kurniati Abidin M. Said L Muh. Said L Muh. Yusuf Nidya Lena Fitriah Laksana Nuraeni Nuraeni Nurhidayah Nurhidayah Nurlailiyah Isnaini Nurlinda Jusli Prasepvianto Estu Broto Rahmaniah Ilham Rahmaniah Rahmaniah Rahmaniah Rahmaniah RAHMANIAH RAHMANIAH ratih ratih Sri Zelviani Suasmoro Suasmoro Sulaiman Yahirah Muhammad