Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan Teknologi dan Kejuruan Teknomekanik
Ari Syaiful Rahman Arifin
Department of Civil Engineering, Faculty of Engineering, Universitas Negeri Padang, Indonesia
Education Engineering Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Durability performances of ferronickel slag aggregate and seawater concrete Nevy Sandra; Muhammad Akbar Caronge; Jati Sunaryati; Keiyu Kawaai; Willick Nsama; Yaumal Arbi; Ari Syaiful Rahman Arifin
Teknomekanik Vol. 8 No. 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i1.34572

Abstract

The rising demand for concrete in the building sector has resulted in the exhaustion of natural sand and freshwater supplies, leading to the pursuit of sustainable substitutes. Coastal areas have plentiful ferronickel slag (SL) and seawater (SW), which can be used to manufacture concrete. Nevertheless, the possibility of corrosion to steel reinforcement raises concerns that require further research. This investigation examines the mechanical and durability performance of concrete that incorporates SL as a partial replacement for fine aggregate and SW as a mixing component. The objective is to optimize SL content to improve compressive strength, resistance to chloride ions, and overall durability. Experimental results show that replacing 25% of the aggregate with SL yields the best combination of workability, strength, and durability, significantly enhancing compressive strength, decreasing porosity, and lessening chloride ion penetration, as evidenced by the Rapid Chloride Penetration Test (RCPT). Although seawater promotes early-age hydration and strength development, its extended use slightly diminishes compressive strength due to salt-induced micro-cracking. However, SL counters these effects, making SW–SL mixture a feasible and sustainable option for concrete production in coastal and resource-limited areas. A significant relationship between RCPT and compressive strength underscores the important role of SL in densifying the matrix and improving impermeability. The concrete mixture with 25% SL exhibits the lowest abrasion weight loss at 28 and 120 days, showing improved durability. This study highlights the potential of using SL and seawater to create eco-friendly and high-performance concrete for harsh environments.
The effectiveness of the project-based learning model with the STEAM approach in the woodworking practice course Fani Keprila Prima; Rijal Abdullah; Juniman Silalahi; Ari Syaiful Rahman Arifin; Trimailuzi Trimailuzi
Jurnal Pendidikan Teknologi Kejuruan Vol 9 No 2 (2026): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v9i2.50423

Abstract

The transformation of vocational education requires learning models that not only emphasize project completion but also ensure product quality aligned with industry standards. This study investigates the effectiveness of integrating Project-Based Learning (PjBL) with a STEAM approach and inspection-based Quality Control (QC) in enhancing student competencies in a Woodworking Practice course. A quasi-experimental design with a non-equivalent control group was employed. The experimental group experienced PjBL–STEAM integrated with three stages of inspection-based QC (incoming, in-process, and final inspection), while the control group received conventional instruction without systematic QC integration. Data were collected through cognitive tests and product quality assessments using structured rubrics. The findings indicate that students exposed to the integrated model demonstrated significantly higher cognitive achievement and produced furniture products of superior quality compared to those in the control group. Improvements were observed across key indicators, including finishing quality, structural strength, aesthetics, and functionality. The results suggest that embedding systematic inspection-based QC within PjBL–STEAM not only strengthens conceptual understanding but also fosters precision, quality awareness, and industry-relevant vocational skills. This study contributes to vocational education by proposing a structured integration of industrial quality inspection practices into project-based STEAM learning. The model supports the development of work-ready graduates and aligns with contemporary vocational education reforms that emphasize contextual learning, industry relevance, and 21st-century competencies.
Co-Authors Fani Keprila Prima Jati Sunaryati Juniman Silalahi Keiyu Kawaai Muhammad Akbar Caronge Nevy Sandra Rijal Abdullah Trimailuzi Trimailuzi Willick Nsama Yaumal Arbi