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Putra, Rusnardi Rahmat
Civil Engineering Department, Universitas Negeri Padang
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Transportation Other

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ZONASI KEGEMPAAN KOTA PADANG BERDASARKAN KARAKTERISTIK TANAH Guswandi, Ghani; Putra, Rusnardi Rahmat
Jurnal Applied Science in Civil Engineering Vol 6 No 3 (2025): Jurnal Applied Science in Civil Engineering
Publisher : Teknik Sipil Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/asce.v6i3.129983

Abstract

Kota Padang merupakan wilayah yang memiliki kerentanan tinggi terhadap gempa bumi karena posisinya yang terletak di zona subduksi aktif antara Lempeng Indo-Australia dan Eurasia. Kondisi geologi dan jenis tanah yang bervariasi di wilayah ini menyebabkan respons tanah terhadap guncangan gempa juga berbeda-beda, terutama dalam hal perioda dominan dan amplifikasi gelombang seismik. Penelitian ini bertujuan untuk melakukan zonasi kegempaan Kota Padang berdasarkan parameter perioda dan amplifikasi tanah dengan menggunakan metode Horizontal to Vertical Spectral Ratio (HVSR). Data diperoleh melalui pengukuran mikrotremor di berbagai titik lokasi di Kota Padang dan dianalisis menggunakan perangkat lunak GPL, Cygwin, BIDO, dan ArcGIS. Hasil penelitian menunjukkan bahwa wilayah dengan tanah lunak, terutama daerah aluvial, memiliki nilai amplifikasi dan perioda yang tinggi, yang berpotensi memperkuat guncangan gempa dan meningkatkan risiko kerusakan bangunan. Zonasi hasil pemetaan dapat digunakan sebagai acuan dalam perencanaan tata ruang dan pembangunan infrastruktur tahan gempa di Kota Padang. Dengan demikian, pemahaman terhadap karakteristik perioda dan amplifikasi tanah sangat penting dalam upaya mitigasi bencana dan pengurangan risiko seismik di wilayah ini.
The Effect of Fiberglass Paint Coating on the Shear and Flexural Strength of Concrete Blocks Juliafad, Eka; Restu, Lisyana Junelin; Yusmar, Fajri; Sandra, Nevy; Putra, Rusnardi Rahmat
Civil Engineering Journal Vol. 11 No. 12 (2025): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-12-04

Abstract

This study uses an experimental method to investigate the behavior of concrete blocks coated with fiber paint, focusing on their shear and flexural strength, ductility, stiffness, and energy dissipation to enhance their mechanical performance. The fiber paint coatings used in this study were applied in different thicknesses, namely 1 mm, 2 mm, and 3 mm. The results show that a 3 mm coating provided the highest improvement, with shear and flexural strengths increasing by 47.36% and 66.06%, respectively. Flexural ductility improved by up to 32%, while stiffness increased by 12% in flexure and 13% in shear. Energy dissipation also showed significant enhancement; total flexural energy increased from 1.38 kNmm to 10.76 kNmm at 3 mm, and shear energy dissipation reached 50.72 kNmm at 3 mm. These results confirm that fiber paint can enhance the shear and flexural strength, ductility, stiffness, and energy dissipation of concrete blocks. This study introduces fiber paint as a practical reinforcement method for concrete block materials, offering a simple, easy-to-apply, and cost-effective alternative that improves both mechanical and aesthetic performance.
Co-Authors Abdur Rahim, Abdur Ade Tira Wulandari Agung, M. Darma Ardes, Wilda Ardilla, Wilis Asri Atmojo Atika, Liana Deno Puyada Dezy Saputra Dwi Shatmoko Edidas , Edidas Estu Prihatini Fadli Fadli Faradila, Salsa Ayu Febry Mahdi Ramadhan Ganefri . Guswandi, Ghani Huda, Yasdinul Irwan Irwan J. Kiyono Juliafad, Eka Khairan, Adam Khumairah, Resti Kiyono, Junji Krismadinata Krismadinata, Krismadinata M. Darma Agung Martu, Yafen Heltri Mendrofa, Iman Jujur Nefrin, Zhilalurrahman Nevy Sandra Nizwardi Jalinus Putri, Prima Yane Rahmadios, Orelsha Rama, Alzet Rani, Iskandar G Remon Lapisa Reski Pria Utama Ressy Fitria Restu, Lisyana Junelin Rezqya Mustika Rizky Indra Utama SAFRINANDA HARAHAP Sai K. Vanapalli Saputra, Dezy Shaleh, Alif Ahmad Al Totoh Andayono Vanapalli, Sai Wilis Ardila Y. Ono Yasuke Ono Yusmar, Fajri Yusuke Ono, Yusuke Zhang, Zhenghu Zuherna Mizwar Zul Rafiq