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The Effect of Fly Ash Nagan Raya on Geopolymer Mortar Rachman, Aulia; Fauzi, Amir; Azhari, Muhammad; Amna, Khairul; Diana, Mhd. Arief; Rosnita, Lidya
Electronic Journal of Education, Social Economics and Technology Vol 6, No 2 (2025)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ejeset.v6i2.1069

Abstract

Industrial waste containing silica (Si), alumina (Al), and calcium (Ca) has potential as an alternative binder in concrete. These compounds form C-S-H and C-A-H gels in water-based systems, or Si-O-Si, Si-O-Al, N-A-S-H, and C-A-S-H gels in alkali-based geopolymer systems, enhancing strength and influencing setting time. One example is investigate FA from Nagan Raya (FANR) Coal-Fired Power Plantation in Aceh. This study evaluates its performance in geopolymer mortar through chemical and mechanical analysis. FANR is rich in Si and Al, improving mortar strength, while Ca content affects binding time. XRD analysis revealed crystalline phases in FANR and geopolymer binders, resulting in low reactivity. SEM analysis showed spherical particles with foggy surfaces, differing from typical glassy fly ash, which influences workability and alkali absorption. Mortar tests indicated the best performance at 8M NaOH and a Na₂SiO₃/NaOH ratio of 3.0, achieving 18.30 MPa compressive strength at 28 days. Higher alkali concentrations increased viscosity, reducing workability and final strength. Overall, FANR shows promise as a geopolymer binder with proper optimization of activator ratios.
PENGUATAN KUALITAS INFRASTRUKTUR PENDIDIKAN MELALUI PENDAMPINGAN PROGRAM REVITALISASI SMA DI PROVINSI ACEH Kasaf, Michel; Alfisyahrin; Diana, Mhd. Arief; Rizqi Maysyarah Hadi, Tjut; Bravikawati, Marini
Jurnal Masyarakat Berdikari dan Berkarya (Mardika) Vol 3 No 3 (2025): Jurnal Masyarakat Berdikari dan Berkarya (MARDIKA)
Publisher : Fakultas Teknik, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/mardika.v3i3.13822

Abstract

The Senior High School (SMA) Revitalization Program is a strategic government initiative aimed at improving the quality of educational infrastructure to support a safe, comfortable, and sustainable learning environment. However, its implementation still encounters various technical and managerial challenges, particularly during the planning, execution, and control stages of the work. This community service activity aims to strengthen the quality of educational infrastructure through assistance in the SMA Revitalization Program in Aceh Province. The assistance was carried out by a university team using a self-managed approach, providing technical assistance, field supervision, and administrative support to schools and relevant stakeholders. The implementation methods included identification of existing conditions, assistance in technical planning, monitoring of construction implementation, and evaluation of work outcomes. The results indicate that the assistance improved the technical understanding of school-level implementers, enhanced the quality of construction work, and minimized potential implementation errors. Therefore, this activity contributes positively to the successful implementation of the SMA Revitalization Program and to the improvement of educational infrastructure quality in Aceh Province.