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All Journal Media Ilmiah Teknik Sipil TECHNOLOGIC
Apsari, Anindya Sulaksani
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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STUDI EKSPERIMEN SEDERHANA PENGARUH SERAT SISAL TERHADAP KUAT TEKAN DAN KUAT TARIK BELAH FIBER CONCRETE Resmaindra, Muhammad Thariq; Krismayanti, I Gusti Agung Arie; Devi, Sagung Istri Pramitari Wima; Akbar, Fas’ul; Mazaya, Bondan Dhifan; Apsari, Anindya Sulaksani
Technologic Vol 16 No 1 (2025): TECHNOLOGIC
Publisher : LPPM Politeknik Astra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52453/t.v16i1.456

Abstract

Dalam meningkatkan performa beton dalam menahan retak, penambahan serat dilakukan baik menggunakan serat alami ataupun buatan. Salah satu serat yang berpotensi saat ini adalah serat sisal (Agave sisalana) yang diekstrak dari daun tumbuhan sisal. Penelitian ini bertujuan untuk mengevaluasi pengaruh penambahan serat sisal terhadap sifat mekanis beton, khususnya kuat tekan dan kuat tarik belah pada beton. Selain itu, hasil kurva tegangan-regangan yang didapat juga dipelajari lebih lanjut untuk mengetahui perilakunya. Serat sisal ditambahkan ke dalam campuran beton dengan variasi kadar 0%, 0,5%, dan 1,0% dari massa semen. Campuran beton diuji setelah periode perawatan standar selama 28 hari. Hasil eksperimen menunjukkan bahwa penambahan serat sisal meningkatkan kuat tekan beton pada kadar 0,5% dari massa semen dan menurunkan kuat tekan pada kadar 1%. Adapun kuat tariknya mengalami peningkatan untuk kadar 0.5% dan 1% dengan besar peningkatan yang sama, yaitu 1.1 kali dari beton normal. Penambahan kadar sisal 0.5% tidak meningkatkan daktilitas terhadap tarik, sedangkan penambahan serat sisal dengan kadar 1% meningkatkan regangan tariknya menjadi 1.3 kali dari beton normal.
Analisis Perkuatan Kolom Lingkaran Pada Bangunan Soft-Story Menggunakan Steel Jacketing Dengan Pendekatan 2D: Analysis Of Circular Column Strengthening In A Soft-Story Building Using Steel Jacketing With 2D Approach Resmaindra, Muhammad Thariq; Mazaya, Bondan Dhifan; Apsari, Anindya Sulaksani
Media Ilmiah Teknik Sipil Vol. 12 No. 2 (2024): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v12i2.6101

Abstract

Collapse due to soft-story is often encountered in Indonesia. The collapse mechanism caused by soft stories is very dangerous, causing severe damage even collapse to the building structure. Steel jacketing is one of the means to strengthen the column which is considered effective in increasing the strength and stiffness of the reinforced elements hence soft story collapse in buildings can be prevented. The aim of this research is to evaluate the behavior of the existing building structure before strengthening the columns using limit analysis and pushover analysis and to determine the effect of strengthening columns with steel jacketing on the behavior and the performance of the structure. In this research, the existing structure is simulated to experience design errors and is modeled as a 2D portal with the function of a 4-story school building. From the results of the limit analysis, the existing structural model has the potential to experience a local collapse mechanism, followed by the potential for soft story collapse on the 1st floor. From the results of the pushover analysis, the existing structural model experiences the soft story mechanism and does not show performance points as required by FEMA 440. After carrying out this strengthening the column with steel jacketing, the structural model shows a better failure mechanism and the element performance obtained after strengthening is in the Immediate Occupancy (IO) range
Co-Authors Akbar, Fas’ul Devi, Sagung Istri Pramitari Wima Krismayanti, I Gusti Agung Arie Mazaya, Bondan Dhifan Resmaindra, Muhammad Thariq