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All Journal Jurnal Ilmu Teknik Sipil Indonesia (JITESNA)
Deki Sipul Umbu Hina
Universitas Teknologi Yogyakarta
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Mechanical Engineering Transportation

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Optimasi Desain Jembatan Gantung Dengan Menggunakan Material Komposit Serat Karbon Untuk Peningkatan Efisiensi Dan Daya Tahan Deki Sipul Umbu Hina
Jurnal Ilmu Teknik Sipil Indonesia Vol. 1 No. 1 (2025): JITESNA - Juli
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitesna.v1i1.746

Abstract

This study aims to optimize the design of suspension bridges by utilizing carbon fiber composite materials to enhance structural efficiency and long-term durability. Employing a quantitative methodology, this research compares two bridge design models—a conventional model (steel) and an innovative model (carbon fiber composite)—through numerical simulations based on the Finite Element Method (FEM). The analysis results indicate that the use of carbon fiber composites leads to a significant reduction in total structural weight (up to 45%), which substantially decreases the load on foundations and towers. Furthermore, the composite model demonstrates a more stable dynamic response, with a higher natural frequency that improves its resistance to wind and seismic resonance, a critical factor for long-span bridges. In terms of durability, carbon fiber composites excel due to their inherent corrosion resistance and fatigue resistance, potentially reducing lifetime maintenance costs. Although the initial material cost of composites is higher, a life-cycle cost analysis suggests that long-term savings from maintenance can offset this initial investment. The study concludes that carbon fiber composite material is a technically superior and viable alternative for modern suspension bridge design, offering a lighter, stronger, and more sustainable solution for future infrastructure.
Analisis Kinerja Beton Ramah Lingkungan Berbasis Fly Ash Dan Slag Terhadap Kuat Tekan Dan Durabilitas Deki Sipul Umbu Hina
Jurnal Ilmu Teknik Sipil Indonesia Vol. 2 No. 1 (2026): JITESNA - Januari
Publisher : CV. SINAR HOWUHOWU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70134/jitesna.v2i1.1000

Abstract

The construction industry significantly contributes to global carbon emissions due to the extensive use of Portland cement. One approach to reducing environmental impacts is the development of eco-friendly concrete by utilizing industrial waste materials such as fly ash and slag as partial cement replacements. This study aims to analyze the performance of fly ash- and slag-based eco-friendly concrete in terms of compressive strength and durability. An experimental laboratory method was employed using several concrete mix variations, including normal concrete, fly ash concrete, slag concrete, and their combined mixture. Compressive strength tests were conducted at 7, 14, and 28 days, while durability was evaluated through water absorption and porosity tests. The results indicate that concrete containing fly ash and slag exhibits slower strength development at early ages; however, at 28 days, it achieves comparable or higher compressive strength than normal concrete. In terms of durability, eco-friendly concrete shows lower water absorption and porosity values, indicating a denser microstructure and better resistance to aggressive environmental exposure. Therefore, fly ash- and slag-based concrete has strong potential as a sustainable construction material.
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