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All Journal Science and Technology Indonesia TEKNIKA
Hasyim, Saloma
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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PENGGUNAAN ABU SEKAM PADI SEBAGAI BAHAN TAMBAHAN PADA CAMPURAN BETON GEOPOLIMER: REVIEW KINERJA Farlianti, Sari; Hasyim, Saloma; Aminuddin, K.M.; Sapta, Sapta
TEKNIKA: Jurnal Teknik Vol 11 No 2 (2024)
Publisher : Universitas IBA Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35449/teknika.v11i2.297

Abstract

Paper ini mengkaji literatur terkini dalam 5 tahun terakhir tentang penggunaan abu sekam padi (ASP) pada campuran beton geopolimer sebagai bahan tambahan dengan tujuan untuk meningkatkan kinerja beton dan ketahanannya terhadap lingkungan. Abu pekam padi merupakan material pozzolan alami yang kaya akan kandungan silika, di mana melalui reaksi alkali dengan silika dapat memperkuat struktur beton geopolymer. Metode yang digunakan dalam paper ini meliputi penelusuran pustaka secara komprehensif pada database ilmiah seperti ScienceDirect, SpringerLink, dan Google Scholar, dengan kata kunci "geopolymer concrete using rice husk ash". Jurnal-jurnal yang relevan dipilih berdasarkan kontribusi pada tiga aspek utama: (1) pengaruh abu sekam padi terhadap kekuatan mekanis beton geopolymer, dan (2) ketahanan terhadap paparan suhu tinggi. Dari hasil review menunjukkan bahwa abu sekam padi, yang kaya akan kandungan silika, memiliki peran penting dalam meningkatkan kekuatan tekan beton geopolymer dan ketahanannya terhadap kondisi lingkungan ekstrem. Beberapa studi menemukan bahwa penambahan abu sekam padi 5% hingga 20% berat total campuran dapat meningkatkan kekuatan tekan dan mengurangi keretakan akibat suhu tinggi. Selain itu, karakterisasi abu sekam padi menunjukkan ukuran partikel mikro dan distribusi silika yang optimal untuk reaksi geopolymerisasi. Kesimpulan ini mengindikasikan potensi besar abu sekam padi dalam aplikasi beton geopolymer ramah lingkungan. Kata kunci : Geopolymer concrete, abu sekam padi, kinerja beton geopolimer.
Effect of Nanosilica Addition and Temperature on Durability of Polymer Mortar in Seawater Environment Septriansyah, Verinazul; Hasyim, Saloma; Nurjannah, Siti Aisyah
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.847-855

Abstract

This study examines the effect of nano-silica addition and temperature variation on the durability of polymer mortar exposed to seawater. We investigated three specimen variations: polymer mortar without nanosilica (MP), polymer mortar with 0.4% nanosilica added (MP N 0.4%), and nanosilica polymer mortar with 85◦C heating (MP N 0.4% T 85◦C). Testing methods included cyclic and static immersion for 90 days in Tanjung Pandan, Bangka Belitung, followed by characterization through specific gravity, compressive strength, SEM (Scanning Electron Microscopy), FTIR (Fourier Transform Infrared Spectroscopy), and XRD (X-ray diffraction) analysis. Results showed that 0.4% nano-silica addition combined with 85◦C heating treatment significantly increased compressive strength to 51.78 MPa in cyclic immersion, compared to 38.17 MPa for standard polymer mortar. SEM analysis revealed a more compact microstructure with reduced porosity in nano-silica specimens, while FTIR confirmed the formation of new chemical bonds between the epoxy matrix and silica particles. XRD testing identified the presence of SiO2 crystalline phase and nano-silica distribution in amorphous form throughout the composite matrix. The optimized polymer mortar demonstrated superior durability in seawater environments, maintaining specific gravity stability and resistance to degradation after prolonged immersion, outperforming conventional cementitious materials in marine applications.
Co-Authors Aminuddin, K.M. Farlianti, Sari sapta, sapta Siti Aisyah Nurjannah, Siti Aisyah Verinazul Septriansyah