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All Journal TEKNIK Journal of the Civil Engineering Forum Aceh International Journal of Science and Technology Jurnal Teknik Sipil Journal of The Civil Engineering Student Acta Geoscience, Energy, and Mining
Taufiq Saidi
Jurusan Teknik Sipil Universitas Syiah Kuala, Jl. Syech A. Rauf No. 7 Darussalam, Banda Aceh 23111
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Transportation

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The Impact of Fiber Density and Layering in NFRP on Confined Concrete Compressive Strength Amalia, Zahra; Saidi, Taufiq; Hasan, Muttaqin; Al-Bakri, Nazira Suha; Fu, Li
Journal of the Civil Engineering Forum Vol. 10 No. 2 (May 2024)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.10408

Abstract

Strengthening columns holds a crucial role in structural engineering and is frequently called for due to a range of factors, including heightened load requirements, structural degradation, design flaws, or the need for seismic retrofitting. Natural Fiber-Reinforced Polymers (NFRP) in concrete reinforcement has gained significant attention in recent years as a sustainable and eco-friendly alternative to strengthened reinforced concrete. NFRP jacketing presents an adaptable option, as it delivers an improved load-carrying capability as a confining effect. This paper explores the fundamental reasons behind the need for column strengthening and the advantages of employing NFRP jacketing as a preferred method. The study examined the influence of varying fiber densities and the number of fiber layers in NFRP on the mechanical properties of concrete, with a specific focus on its confined concrete compressive strength. The test specimen was a cylinder with a diameter of 150mm and a height of 300mm. NFRP, made from abaca fiber and resin, was attached around the specimen’s circumference to provide a confinement effect. Axial load was applied to the test specimen. The findings indicated that introducing abaca fiber as an NFRP material increased confined concrete compressive strength by up to 37% compared to unconfined concrete. Moreover, the application of three layers of NFRP fibers results in a 15% rise in confined concrete stress, especially when higher-density fiber types are utilized. Study findings suggest that natural fiber density and the number of layers play a role in enhancing concrete strength, however, their influence may not be significantly pronounced.
Long-term Monitoring of Low-cost Seismometers: Consistency Analysis of The Instrument Juellyan, Juellyan; Setiawan, Bambang; Hasan, Muttaqin; Achmad, Ashfa; Yulianur, Alfiansyah; Saidi, Taufiq
Aceh International Journal of Science and Technology Vol 13, No 1 (2024): April 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.1.38248

Abstract

Instruments have become an essential part of conducting a study or research. With the aid of instruments, the measurement process can be faster, more efficient, and more accurate. However, an instrument also has a limited service life. Over time, the performance of the instrument will degrade. Therefore, the equipment must be regularly maintained and calibrated periodically. This research aims to test the measurement consistency of a low-cost seismometer (RS-3D). The approach involves long-term measurements to assess the instrument's stability in taking measurements. The measurement data is then processed and presented as frequencies using spectrum analysis. The research findings indicate that the instrument's consistency is generally good, with an average standard deviation of 0.18 and a coefficient of variation of 5%. Additionally, 95% confidence interval calculations yielded values of 2.520.02 for measurements at RKD, 3.040.05 for measurements at GLT-USK, and 3.30.04 for measurements at GFT-USK. Data validation was performed using the equations from building codes, showing that the difference between the measured microtremor frequency and the empirical equation was less than 1, indicating good measurement results. The conclusion drawn from this study is that a higher standard deviation value indicates a more distributed data spread, signifying less consistent research data. Conversely, a lower standard deviation indicates that the data is more concentrated around the mean value, indicating more consistent measurement results. Moreover, with previous studies having conducted validation and consistency testing, it is hoped that both tests will be routinely performed during instrument maintenance.
Studi Kerentanan Struktur Bangunan Bertingkat Tinggi Akibat Gempa Di Kota Banda Aceh abdi, aufar; Hasan, Muttaqin; Saidi, Taufiq; Hayati, Yulia
Journal of The Civil Engineering Student Vol 4, No 1 (2022): Volume 4 Nomor 1 April 2022
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v4i1.17733

Abstract

Gempa bumi adalah fenomena alam berupa getaran yang terjadi di permukaan bumi akibat pelepasan energi dari dalam secara tiba-tiba yang menciptakan gelombang seismic yang dapat mengakibat kerusakan struktur pada bangunan sehingga salah satu usaha mitigasi bencana gempa bumi adalah dengan memperkuat struktur bangunan. Gedung KANWIL BRI Banda Aceh sudah melewati berbagai gempa salah satunya gempa kembar tanggal 11 April 2012, yaitu gempa Simeulue I (8,3 SR). Untuk itu perlu dilakukan pengecekan ulang kerentanan struktur bangunan tersebut dengan memodelkan ulang struktur bangunan sesuai dengan spesifikasinya pada aplikasi SAP2000,  yang kemudian diberikan beban Pushover serta pembebanan Time History. Pengolahan data akan di analisis dengan aturan standar ATC-40, ASCE-41 serta dengan Incremental Dynamic Analysis (IDA). Berdasarkan hasil pushover dengan Respon spektrum kota Banda Aceh atas standar ATC-40 dan ASCE-41, gedung KANWIL BRI Banda Aceh didapat pada level kinerja Immediate Accupancy, kemudian dari hasil analisis dengan metode Incremental Dynamic Analysis (IDA) terhadap gempa Simeulu I, didapatkan kurva kerapuhan gedung di mana dengan skala 8,3 SR mengalami kemungkinan terjadinya kerusakan struktur Slight Damage sebesar 97,27%, 86,08% Moderate, 37,3% Extensive, dan untuk Collapse Damage sebesar 0,0004%.
Pengaruh Agregat Kasar Ringan Buatan dari Tanah Diatomae pada Beton Ringan Struktural terhadap Nilai Kuat Tarik Belah Ajrina, Siti Ghufrani; Saidi, Taufiq; Muttaqin, Muttaqin
Journal of The Civil Engineering Student Vol 3, No 2 (2021): Volume 3, Nomor 2, Agustus 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v3i2.12524

Abstract

Abstrak Perkembangan beton ringan struktural dalam dunia konstruksi sangat pesat. Beton ringan struktural memiliki keuntungan dapat mengurangi beban mati suatu konstruksi dan memiliki kekuatan yang baik. Beton ringan dapat diperoleh dengan cara menggunakan agregat ringan sebagai pengganti agregat normal, salah satunya adalah penggunaan tanah diatomae sebagai agregat kasar dalam beton. Tujuan dari penelitian ini untuk mengetahui kuat tarik belah dari beton ringan. Manfaat dari penelitian ini adalah menghasilkan beton ringan struktural yang terbuat dari tanah diatomae, sehingga diharapkan akan menjadi alternatif dalam memanfaatkan sumber daya alam. Tanah diatomae sebagai agregat kasar ringan buatan dibuat dengan dua variasi, yaitu agregat dari tanah diatomae saja (variasi KBD) dan agregat dari campuran tanah diatomae dan 5% serbuk gergaji berukuran lebih kecil 0,6 mm (variasi KBDSG). Setiap variasi dibuat dengan cara dibuat bulatan-bulatan kecil berukuran 5-20 mm. Kemudian agregat dioven pada suhu 100 oC selama 24 jam dan dibakar di tungku pembakaran selama 3 hari. Hasil dari penelitian diperoleh nilai kuat tarik belah rata terbesar pada variasi KBD sebesar 3,558 MPa dan nilai terendah sebesar 2,913 MPa dengan rata-rata 3,237 MPa. Pada beton ringan variasi KBDSG, kuat tarik belah terbesar didapatkan sebesar 3,258 MPa, dan kuat tarik belah terkecil sebesar 2,757 MPa dengan rata-rata 2,992 MPa. Kata Kunci : Beton Ringan Struktural, Agregat Kasar Ringan, Tanah Diatomae, Kuat Tarik Belah
Beton Mutu Tinggi menggunakan Tanah Diatomae sebagai Substitusi Semen: Kekuatan dan Absorpsi Maharani, Eva Ayudya; Hasan, Muttaqin; Saidi, Taufiq
Journal of The Civil Engineering Student Vol 5, No 4 (2023): Volume 5 Nomor 4 Desember 2023
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/journalces.v5i4.20986

Abstract

Beton mutu tinggi memiliki nilai FAS (Faktor Air Semen) yang rendah, maka dibutuhkan semen dalam jumlah yang banyak pada campuran beton mutu tinggi. Salah satu solusi untuk mengurangi pemakaian semen ialah penggunaan secara parsial tanah diatomae sebagai pengganti semen. Penelitian ini bertujuan untuk mengetahui pengaruh variasi substitusi tanah diatomae dalam campuran beton mutu tinggi terhadap kuat tekan, kuat tarik belah, kuat tarik lentur, dan absorpsi beton. Dalam penelitian ini digunakan substitusi tanah diatomae dengan variasi 0% dan 10% dari berat semen. Digunakan FAS 0,3 dan superplasticizer sebesar 1,5% dari berat semen. Benda uji yang digunakan berbentuk silinder ukuran d = 100 mm; t = 200 mm dan balok dengan ukuran 100 mm × 100 mm × 400 mm. Digunakan 3 benda uji untuk setiap variasi dalam setiap pengujian. Sehingga total benda uji berjumlah 18 benda uji. Pengujian dilakukan pada umur beton 28 hari. Hasil penelitian menunjukkan bahwa dengan substitusi tanah diatomae sebesar 10% dapat meningkatkan nilai kuat tarik belah dan absorpsi, sedangkan nilai kuat tekan dan kuat lentur beton mengalami penurunan.Kuat tekan, kuat lentur, dan kuat lentur rata-rata tertinggi sebesar 87, 11 MPa, 7,03 MPa,dan 10,77 MPa pada variasi 0% tanah diatomae.
Quantifying the Seismicity Parameters of A New Model of Seismic Source Zone for Aceh and Surrounding Areas Juellyan, Juellyan; Setiawan*, Bambang; Muttaqin, Muttaqin; Saidi, Taufiq
Aceh International Journal of Science and Technology Vol 11, No 3 (2022): December 2022
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.11.3.28360

Abstract

Aceh is justified as one of the Indonesian provinces with a high level of seismicity. This high seismicity certainly has a severe negative impact on various aspects of human life in Aceh and the surrounding areas. Various types of efforts must be carried out to solve and mitigate the problem caused by any earthquake in Aceh and the surrounding areas. One aspect that can be carried out to minimize the hazards of seismic activity is the characterization of the source of the earthquake. This characterization can be used for various purposes for further seismic-related studies, including for studying seismic hazard analysis using the probabilistic seismic hazard analysis (PSHA) method. This research aims to determine the characteristics of the seismic source zones for Aceh and the surrounding areas. Based on the geological setting and seismicity catalog data of Aceh and the surrounding areas, a new model of seismic source zones was developed. This new model proposed that Aceh and the surrounding areas be divided into four zones, namely shallow background seismic source zones (divided into two source zones), two deep background seismic source zones, two megathrust source zones, and one fault zone, namely the Sumatra fault zone. The results of this study suggest that Zone I and Zone II of shallow background seismic source zones have a-values of 2.36 and 4.7, b-values of 0.545, and Mmax of 7.7 and 6.8. Deep background seismic source zone I has an a-value of 4.43 and a b-value of 0.9 with a maximum magnitude of 7 Mw. Meanwhile, deep background seismic source zone II has an a-value of 3.28 and a b-value of 0.755 with a maximum magnitude of 6.1 Mw. Megathrust seismic source zone I has an a-value of 3.53 and a b-value of 0.691 with a Mmax of 7.7 Mw. Meanwhile, the megathrust seismic source zone II has an a-value of 3.81 and a b-value of 0.702 with a Mmax of 7.1 Mw. Sumatra fault seismic source zone has an a-value of 2.88 and a b-value of 0.615 with a Mmax of 6.7 Mw.
Behaviour Analysis of Strengthened-RC Beam with Natural Fiber Reinforced Polymer (NFRP) based on Abaca Fiber by Using Finite Element Method Saidi, Taufiq; Hasan, Muttaqin; Amalia*, Zahra; Iqbal, Muhammad
Aceh International Journal of Science and Technology Vol 11, No 2 (2022): August 2022
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.11.2.26520

Abstract

Synthetic fiber reinforced polymer (FRP) as an alternative composite material has been widely used for strengthening and repairing reinforced concrete structures. However, applying synthetic FRP materials is expensive and may be unsafe for the environment. Therefore, natural fiber reinforced polymer (NFRP) is the best alternative FRP, especially in increasing the shear strength of reinforced concrete beams. It has good tensile strength and also is environmentally friendly. Technological developments in the field of computing make modeling various aspects easier. One of them is modeling reinforced concrete (RC) beams. In this study, the ATENA V534 software was used to evaluate the results of the research and testing behavior of reinforced concrete beams. Behavior is evaluated in the form of load and deflection, the pattern of cracks and failure, and stress and strain of reinforcements. The numerical results obtained in ATENA V534 showed good agreement with experimental results. The maximum load of the four beams, namely BN, BSTV1, BSTV2, and BSTD1, based on the finite element method analysis results using ATENA V534 are 25,89 tons, 27,53 tons, 28,14 tons, and 26,92 tons, respectively. In contrast, the maximum load obtained from experimental results are 26,79 tons, 29,40 tons, 29,45 tons, and 27,14, respectively. The difference in crack angle in the beam between ATENA V534 and the experimental result is around 2. The results of numerical analysis using ATENA V534 show a lower maximum load value, higher stiffness, and lower deflection at maximum load compared to experimental results on all reinforced concrete beams analyzed in this study.
Tensile Strength of Natural Fiber in Different Types of Matrix Saidi, Taufiq; Hasan, Muttaqin; Amalia*, Zahra
Aceh International Journal of Science and Technology Vol 11, No 2 (2022): August 2022
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.11.2.26175

Abstract

In recent years, product-based products with low environmental impact have become one of the considerations in the construction structure. The attention of researchers toward the development of natural materials has been increasing. The use of natural fibers as composite materials for the strengthened structure has been studied. However, natural fibers are influenced by their hydrophilic nature and specific morphology. Thus, research on natural fiber composite materials still needs to be explored. This study evaluates the tensile strength of natural fiber composite materials based on the type of fiber, fiber layer used, and resin type according to ASTM D3039. The highest tensile strength was found in the epoxy resinbased matrix composite with three layers of abacaa fiber (SAAE-LP3) by 111.45 MPa. The results show that the type of fiber, fiber layer used, and resin in the composite matrix considerably affect its tensile strength performance.
Preliminary Study of NFRP-Confined Concrete for Enhancing Compressive Strength Saidi, Taufiq; Hasan, Muttaqin; Amalia, Zahra
Aceh International Journal of Science and Technology Vol 12, No 1 (2023): April 2023
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.1.31500

Abstract

A column is a structural element that carries axial compressive loads. This compressive axial load causes the shortening of the structural column. It causes the column to be subjected to a tensile force in its axis perpendicular to the compression axis. This tensile force causes the column to collapsereinforcement methods to improve the quality of concrete in resisting higher axial compressive loads. Strengthening the column with external restraints is expected to increase the strength of the concrete. The use of synthetic Fiber Reinforced Polymer (FRP) as a composite material for external restraint on structures is widely used for strengthening concrete structures. Considering the environmental impact, natural FRP materials have been developing nowadays. One of the natural fibers that have been researched and used as a composite material for Natural Fiber Reinforced Polymer (NFRP) is abaca fiber. This research aims to find the contribution of abaca fiber in increasing the compressive strength of confined concrete as a preliminary study. This study conducted the test by applying a compressive load to concrete specimens reinforced with NFRP restraints. Specimens were cylinders with a diameter of 150mm and 300mm in height. NFRP was applied at the cylinder circumference area (jacketing method) by using manual wet-layup techniques. The NFRP was investigated with variations in the number of NFRP layers. The results showed that NFRP-confined concrete has a higher compressive strength of 34.73% than the controlled specimen.
Evaluasi kinerja struktur bangunan terhadap beban gempa setelah masa layan 24 tahun pada endapan aluvium Muzhaffar, Imam; Iskandar*, Juellyan; Saidi, Taufiq; Sungkar, Munira; Yunita, Halida; Muhni, Akmal
Acta Geoscience, Energy, and Mining Vol 4, No 2 (2025): June 2025 (In Progress)
Publisher : Departemen Teknik Kebumian Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/actaGEM.v4i2.48791

Abstract

Struktur bangunan ini selesai pada tahun 1998 dan didirikan di atas endapan aluvium (Qh). Gedung ini telah melewati beberapa gempa besar salah satunya yaitu Gempa dan Tsunami 2004. Oleh karena itu perlu dievaluasi ulang mengikuti standar peraturan gedung terbaru yaitu SNI 1726:2019. Penelitian ini bertujuan untuk mengevaluasi perilaku struktur bangunan setelah masa layan 24 tahun yaitu berupa perpindahan, gaya geser dasar, dan level kinerja struktur sesuai ASCE 41-17. Gedung ini memiliki panjang 29,4 m, lebar 13 m dan tinggi 14,4 m. Pada penelitian ini digunakan analisis pushover dibarengi pengecekan frekuensi alami gedung existing dengan alat mikrotremor untuk membandingkan perilaku struktur di awal desain dan terhadap kondisinya pada saat ini. Pemodelan menggunakan program ETABS, dari hasil evaluasi didapatkan level kinerja gedung sesuai perencanaan awal berdasarkan push x yaitu immediate occupancy dan push y termasuk ke dalam life safety. Kemudian level kinerja gedung setelah masa layan 24 tahun berdasarkan push x dan push y keduanya termasuk ke dalam kategori life safety. Dari segi kekakuan gedung dalam menahan perpindahan akibat beban pushover juga mengalami penurunan setelah 24 tahun, hal ini bisa diketahui dengan base shear yang sama perpindahan gedung setelah masa layan 24 tahun lebih besar dibandingkan gedung yang sesuai dengan perencanaan awal.
Co-Authors abdi, aufar Achmad, Ashfa Ajrina, Siti Ghufrani Akmal Muhni Al-Bakri, Nazira Suha Aldri Frinaldi Alfiansyah Yulianur BC Amalia*, Zahra Asyifa, Cut Nella Bambang Setiawan Fitri, Yarmiza Anggriyani Fu, Li Halida Yunita Hasan, Muttaqin Iskandar*, Juellyan Juellyan, Juellyan Maharani, Eva Ayudya Mahlil, Mahlil Muhammad Iqbal MUNIRA SUNGKAR, MUNIRA Muttaqin Muttaqin Muzhaffar, Imam Putri, Cut Rizka Ellysa Setiawan*, Bambang Teuku Budi Aulia Yulia Hayati, Yulia Zahra Amalia