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All Journal Jurnal Applied Science in Civil Engineering Jurnal Sains Student Research Horizon: Indonesian Journal of Multidisciplinary
Syahril Rahmat
Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Social Sciences Other

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Pengaruh Campuran Fly ash dan Variasi Kapur terhadap Daya Dukung Tanah Bekas Tambang di Gunung Sarik Ereza Apriyani; Syahril Rahmat
JOURNAL SAINS STUDENT RESEARCH Vol. 4 No. 2 (2026): April: Jurnal Sains Student Research
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jssr.v4i2.9283

Abstract

The limited availability of land suitable for development has encouraged the utilization of alternative land, one of which is ex-mining land. Soil in ex-mining areas generally has low bearing capacity and therefore does not meet the technical requirements for construction subgrade. This study aimed to analyze the effect of adding fly ash and lime on increasing the bearing capacity of ex-mining soil in Gunung Sarik Village, Kuranji District, Padang City. The soil damples used were disturbed soils collected from the ex-mining area. Fly ash was obtained from the Teluk Sirih Steam Power Plant, West Sumatra, while quicklime was sourced from the Bukit Tui Factory, Pdang Panjang City. The research was conducted through laboratory testing including physical properties analysis, Proctor compaction test, and California Bearing Ratio (CBR) laboratory testing based on ASTM D 1883-67 standards. The mixture variations consistes of 5% fly ash combined with 0%, 4%, 8%, and 12% lime. The addition of fly ash and lime positively influenced the increase in soil bearing capacity. The CBR value of native soil, Which was 10,37%, increased across all mixture variations. The highest increase was achieved with the combination of 5% fly ash and 12% lime, reaching a CBR value of 19,16%, followed by the mixture of 5% fly ash and 8% lime at 14,43%, and 5% fly ash with 4% lime at 14,21%. These results indicate thet the addition of fly ash and lime is effective in increasing the bearing capacity of ex-mining soil through the stabilization process, making the soil feasible for consideration as construction subgrade.
Evaluasi Stabilitas Lereng Menggunakan Metode Fellenius dan Software Plaxis (Studi Kasus: Ruas Jalan Simpang Kumpulan-Simpang Taman Km. 102+100, Kabupaten Agam) Dellarosa Finnanda; Syahril Rahmat; Juniman Silalahi; Agri Americo Agamuddin
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 3 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/hijm.v4i3.5571

Abstract

Road on Simpang Kumpulan–Simpang Taman section at Km. 102+100 in Agam Regency is one of the vital transportation routes in West Sumatra that frequently experiences disruptions due to landslides. This study aims to evaluate the stability of the existing slope at the location. The evaluation was carried out using two approaches: manual calculation using the Fellenius Method and numerical analysis using Plaxis 2D software. Research data were obtained from field soil testing (N-SPT) and the geometry of the existing slope. The analysis results indicate that the existing slope is in an unstable condition. The Factor of Safety (FS) of the existing slope using the manual Fellenius Method was 0.9, while the analysis using Plaxis 2D yielded 1.167. Both values are below the minimum requirement specified by SNI 8460:2017 (FS ≥ 1.5). This study also compares the results of manual calculations and numerical analysis, which show reasonably good agreement. The findings of this research are expected to provide recommendations regarding the safety level of slopes in landslide-prone areas and serve as a consideration for slope stabilization efforts in Agam Regency.
PERBANDINGAN SUHU RUANG ANTARA PENGGUNAAN DINDING BATA DAN DINDING KAYU Malik Abdul Aziz; Syahril Rahmat
Jurnal Applied Science in Civil Engineering Vol. 6 No. 4 (2025): Jurnal Applied Science in Civil Engineering
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/asce.v6i4.1410

Abstract

This study aims to compare indoor air temperature between brick wall and wooden wall buildings and to evaluate their thermal comfort based on national standards. A quantitative approach with field experimental methods was employed. Temperature measurements were conducted in two rooms with similar geometry and orientation but different wall materials. Temperature data were recorded hourly for 24 hours over three consecutive days. Data analysis was carried out descriptively by comparing average temperatures and daily temperature fluctuations based on SNI T-14-1993-037. The results indicate that rooms with brick walls exhibit more stable indoor temperatures with smaller daily fluctuations, while rooms with wooden walls tend to be cooler at night but experience higher temperature increases during the daytime. Overall, both wall types fall within the thermal comfort range, although they demonstrate different thermal performance characteristics.
Co-Authors Agri Americo Agamuddin Dellarosa Finnanda Ereza Apriyani Malik Abdul Aziz Silalahi, M.Pd, Drs. Juniman