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All Journal Jurnal Radioisotop dan Radiofarmaka CEMARA Journal of Degraded and Mining Lands Management Jurnal Rekayasa Sipil dan Desain Jurnal Media Pertanian Jurnal Pertanian Agros TAPAK (Teknologi Aplikasi Konstruksi) : Jurnal Program Studi Teknik Sipil Jurnal Agrotek Lestari Agrienvi : Jurnal Ilmu Pertanian Jurnal Sains Agro Devotion: Journal of Research and Community Service Nusantara Hasana Journal Teknika Sains : Jurnal Ilmu Teknik Proceedings Series on Physical & Formal Sciences Media Pertanian Jurnal Media Computer Science Jurnal Agroteknologi Devotion: Journal Corner of Community Service AGRIEKSTENSIA Jurnal Dedikasi untuk Negeri AGRIC Bhumiputra: Jurnal Penelitian dan Pengabdian Masyarakat Global Jurnal Ilmu-Ilmu Pertanian
Rajiman Rajiman
Center for Radioisotopes and Radiopharmaceuticals, National Nuclear Energy Agency Puspiptek Serpong, Tangerang - 15314, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Social Sciences Transportation Veterinary Other

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The use of basalt scoria as a geopolymer cement to increase soil bearing capacity Saparudin, Saparudin; Alisjahbana, Sofia W; Rajiman, Rajiman; Sadad, Ilyas; Amin, Muhammad; Hendronursito, Yusup
Journal of Degraded and Mining Lands Management Vol. 11 No. 1 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.111.5085

Abstract

One method that can be used to improve soil properties is the addition of geopolymer cement to the soil to become more stable. This study aimed to determine the effect of geopolymer cement on soil stability. The raw materials for geopolymer cement include clay and basalt rock, with variations in the composition of 0%, 20%, 30%, 40%, and 50%. The levels of temperature variance used were 40 oC, 60 oC, and 80 oC, with variations in 4 and 6 hours. Characterization includes X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscope (SEM) tests of raw materials and products. The highest compressive strength was obtained on a mixture of 40% basalt, 200 mesh, and a heating temperature of 80 °C for 6 hours, 56.32 MPa. The California Bearing Ratio (CBR) test showed a significant increase in the heat treatment geopolymer products. The CBR value on y1 during the 10x collision was 16.67%; in the 30x crash, it increased to 63.33%, while in the 65x collision, it increased to 78.33%. Whereas in the Y2 measurement, at 10x collisions, it was 21.11%; at 30x collisions, the CBR value increased to 82.22%; and at 65x collisions, the CBR value increased to 100.00%.
Analysis of the Effect of Fly Ash Waste Utilization as the Main Material in Polymer Brick Production on Mechanical and Physical Properties Rajiman, Rajiman; Nugroho, Dwiki Faiz
Jurnal Media Computer Science Vol 5 No 2 (2026): April
Publisher : LPPJPHKI Universitas Dehasen Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37676/jmcs.v5i2.11186

Abstract

This study examines the effect of utilizing fly ash waste as the main raw material in the production of polymer bricks on the mechanical and physical properties of the resulting material. This research employed an experimental laboratory method by producing fly ash-based polymer brick specimens activated using alkaline solutions of NaOH and Na₂SiO₃. The curing temperatures applied in this study were 70°C, 80°C, and 90°C. The tests conducted included compressive strength tests and water absorption tests. The results showed that the utilization of fly ash as the primary material significantly influences the increase in compressive strength of polymer bricks. The highest compressive strength value was obtained at higher curing temperatures, indicating that an increase in curing temperature accelerates the geopolymerization process and produces a denser and stronger material structure. In addition, the water absorption test results indicated that the polymer bricks have relatively low water absorption values, which reflects low porosity and good material quality. Therefore, fly ash-based polymer bricks have strong potential as an environmentally friendly alternative building material, energy-efficient, and possessing good mechanical performance, making them a sustainable solution for industrial waste utilization
Keragaan Hasil dan Morfologi Beberapa Varietas Sawi Pahit (Brassica juncea L.) di Dataran Tinggi Levia, Diana Trisna; Rajiman, Rajiman; Fauziah, Nicky Oktav
Jurnal Sains Agro Vol 11, No 1 (2026): Jurnal Sains Agro
Publisher : Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/jsa.v11i1.2003

Abstract

Penelitian ini bertujuan untuk mengevaluasi karakter agronomi dan morfologi beberapa varietas sawi pahit (Brassica juncea L.) yang dibudidayakan pada kondisi dataran tinggi. Penelitian dilaksanakan pada bulan Januari hingga April 2026 di Desa Tejosari, Kabupaten Magelang, pada ketinggian 1.140 mdpl. Penelitian menggunakan Rancangan Acak Kelompok Lengkap (RAKL) dengan satu faktor yang terdiri atas empat varietas (SWBI002, SA 996, TM 701, dan Morakot) yang diulang sebanyak empat kali. Parameter agronomi yang diamati meliputi umur panen, tinggi tanaman, ukuran daun, jumlah daun, hasil, daya simpan, dan umur berbunga, sedangkan karakter morfologi meliputi bentuk daun, warna, karakteristik biji, dan rasa. Hasil penelitian menunjukkan bahwa varietas berpengaruh nyata terhadap umur panen, tinggi tanaman, panjang daun, hasil, dan umur berbunga, namun tidak berpengaruh nyata terhadap lebar daun, jumlah daun, dan daya simpan. Varietas SWBI002 menghasilkan produksi tertinggi (27,35 ton/ha) dan memiliki rasa sedikit pahit, sedangkan varietas lainnya memiliki rasa pahit. Perbedaan morfologi terlihat pada bentuk dan warna daun. Variasi tersebut terutama dipengaruhi oleh faktor genetik.
Co-Authors Aditya Mahatidanar Hidayat Akbar, M Ramadhan Alim, Ahmad Fathul Allamsyah, Yudha Ghazy Andika Timur Hari Pradana Any Nurhasanah Ari Gunawan Arif Anshori, Arif Asahak, Alif Ibnu Sina Azli, Mahardika Deltrian Bhakti, M Aditya Wira Budi Tarigan Busono, Aulia Dian Perwitasari Elea Nur Aziza Fadilla, Irdo Fatikanova, Sindi Fauzi, Ihsan Syafiq Luthfi Fauziah, Nicky Oktav Hari Suryanto Huda, Nabila Farah Ibrahim, M Hamzah Ilyas Sadad Imam Kambali Indrawan, Surya Irsyad, Alhafidz Karim, Iksan Khasanah, Deah Anisatun Kodrad Winarno Levia, Diana Trisna Listari, Vita Majid, M. Majid Mansur, Maulana Megawati, Sari Minhal, Fibrianty Muhammad Adelin Nazhirin Muhammad Amin Ningrum, Setya Nugraheni , Evy Nahdia Zuliastuti Nugroho, Dwiki Faiz Pangestu, Adhi Pergiansyah, Muhammad Arya Prasetya, Genta Adi Prayogi, Wempy Prof. Ir. Sofia W. Alisjahbana, M.Sc., Ph.D., Prof. Ir. Sofia W. Putra, Daffa Arinanda Putra, Jhoni Esa Putra, M Iqbal Syah Pratama Ramadhan, Alga Anur Rivaldi, Muhamad Farhan Ronny Hasudungan Purba Saparudin Saparudin Sari, Titis Lukita Saskia, Dewi Serly Abraham Sarongalo SRI WAHYUNI BUDIARTI Srihartanto, Eko Sugito - Suhardi Suhardi Sutiman Sutiman, Sutiman Syaefudin Ichwan Tigraha, Leonardi Tonny Heryanto Tonny Heryanto Sumantri Topan, M. Takwir Tri Endar Suswatiningsih, Tri Endar Tri Martini Wibowo, Bagus Tri Wibowo, Handy Tri Widiyana, Made Dimas Wijayago, Ardi Yahya, Rian Ainun Yulfriwini, Yulfriwini Yusup Hendronursito, Yusup Zhafira, Elian Zurhaldi, Thoriq Ilham