Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

3.968

P-Index

This Author published in this journals

All Journal TEKNIK MEDIA KOMUNIKASI TEKNIK SIPIL Teras Jurnal The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning) PENDIPA Journal of Science Education Jurnal Dinamika Manajemen Pendidikan (JDMP) Community Development Journal: Jurnal Pengabdian Masyarakat Open Access Indonesian Journal of Medical Reviews Tarbawi: Jurnal Pendidikan dan Pemikiran Islam Journal of the Civil Engineering Forum Aceh International Journal of Science and Technology Prosiding Seminar Informasi Kesehatan Nasional Gudang Jurnal Multidisiplin Ilmu Karimah Tauhid Buletin Pengabdian GEMBIRA (Pengabdian Kepada Masyarakat) Jurnal Teknik Sipil Journal of The Civil Engineering Student PESARE: Science and Engineering Service Journal National Journal of Occupational Health and Safety

Zahra Amalia

Jurusan Teknik Sipil, Universitas Syiah Kuala

Author-ID : 2752554

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Transportation Other

Published : 30 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

Analisis Kuat Tekan Beton Mutu Tinggi Pasca Bakar Menggunakan Serat Polypropylene Aulia, Teuku Budi; Muttaqin, Muttaqin; Afifuddin, Mochammad; Amalia, Zahra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1, JULI 2020
Publisher : Department of Civil Engineering, Diponegoro University

High-strength concrete is vulnerable to high temperatures due to its high density. The use of polypropylene fibers could prevent structure explosion by forming canals due to melted fibers during fire, thus release its thermal stress. This study aims to determine the effect of polypropylene fibers on compressive strength of high-strength concrete after combustion at 400ÂºC for five hours. High-strength concrete was made by w/c-ratio 0.3 with cement amount 550 kg/m3 and added with silica fume 8% and superplasticizer 4% by cement weight. The variations of polypropylene fibers were 0%, 0.2% and 0.4% of concrete volume. The compression test was carried out on standard cylinders Ã˜15/30 cm of combustion and without combustion specimens at 7 and 28 days. The results showed that compressive strength of high-strength concretes without using polypropylene fibers decreased in post-combustion compared with specimens without combustion, i.e., 0.81% at 7 days and 23.42% at 28 days. Conversely, the use of polypropylene fibers can increase post-combustion compressive strength with a maximum value resulted in adding 0.2% which are 25.52% and 10.44% at 7 and 28 days respectively. It can be concluded that the use of polypropylene fibers is effective to prevent reduction of high-strength concrete compressive strength that are burned at high temperatures.

PENGARUH LEBAR SERAT ABAKA SEBAGAI MATERIAL NFRP UNTUK KUAT GESER BALOK BETON BERTULANG Wirahman Salvana; Taufiq Saidi; Iskandar Hasanuddin; Muttaqin Hasan; Zahra Amalia
Jurnal Arsip Rekayasa Sipil dan Perencanaan Vol 5, No 1 (2022): Jurnal Arsip Rekayasa Sipil dan Perencanaan
Publisher : Prodi Magister Teknik Sipil Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jarsp.v5i1.24581

Fiber Reinforced Polymer (FRP) is an alternative for planning, repairing, and strengthening structures. FRP is a combination of fiber as reinforcement and resin as adhesive. Reinforcing materials can be made of carbon, aramid, glass, and natural fibers. Utilization of Natural Fiber Reinforced Polymer (NFRP) FRP with natural fibers can be more economical. The natural fiber used in this research is abaca fiber which is often found and is not used for structural reinforcement. The purpose of this study was to determine the increase in shear strength of reinforced concrete beams with different widths of NFRP abaca fiber. NFRP Abaca fiber is fully wrapped (complete wrapping) on the surface of the reinforced concrete beam. The study was conducted on four reinforced concrete beams measuring 15 cm x 30 cm x 220 cm with simple support with two load points to determine the effect of abaca fiber width on increasing the shear strength of the beam. One specimen as a control test object and three specimens reinforced with Abaca Fiber NFRP with variations in fiber width of 2.5 cm, 5 cm, and 7.5 cm, respectively. The test results show an increase in the shear capacity of reinforced concrete beams as the fiber width increases. The flexural failure occurred in the test object with a width of 7.5 cm, this was the case that the shear capacity of the beam had exceeded the flexural capacity of the beam.

STUDI PERILAKU LEKATAN ANTARA BETON DAN NATURAL FIBER REINFORCED POLYMER (NFRP) DENGAN UJI LEKATAN GESER Muhammad Azwar; Taufiq Saidi; Muttaqin Hasan; Zahra Amalia
Jurnal Arsip Rekayasa Sipil dan Perencanaan Vol 5, No 2 (2022): Jurnal Arsip Rekayasa Sipil dan Perencanaan
Publisher : Prodi Magister Teknik Sipil Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jarsp.v5i2.25081

Reinforcement and repair of reinforced concrete structures using Fiber Reinforced Polymer (FRP) composites have been widely used. However, the high price is one of the obstacles to applying it. Utilization of natural fiber as a Natural Fiber Reinforced Polymer (NFRP) composite material is an alternative because, in addition to its abundant availability in nature, natural fiber also has low specific gravity, is environmentally friendly, and has a more economical production cost. In this study, natural fibers were used as a substitute for synthetic polymer fibers for strengthening and repairing reinforced concrete structures. This study aims to determine the bond strength between concrete and NFRP. The benefit of this research is to provide an overview of the behavior of the bonding strength of NFRP so that it can be applied to the reinforcement and repair of reinforced concrete structures. The bond strength behavior between concrete and NFRP was tested experimentally. The parameters used were the type of natural fiber (abaka, ramie, pineapple, Samia's silk), the type of adhesive (epoxy, polyester, thixotropic epoxy), and the number of layers of fiber. The test object used the form of a beam (100x100x300) mm and has a single reinforcement of 10 mm in the middle of the cross-section. The width of the NFRP is 50 mm with a bond length of 120 mm. Strain gauges are used on NFRP every 50 mm. In addition, strain gauges are also installed on reinforcement and concrete. A result, NFRP bonding can increase the tensile strength capacity of reinforced concrete beams. Bonding of type-b abaca fiber composite with polyester adhesive is the composite that gives the most significant increase in tensile strength capacity. The Beams with three-layer type-b abaka composite bonded with polyester adhesive experienced the highest increase in tensile strength capacity reaching 47.25%. The results of this study indicate the potential of NFRP as a retrofitting method and further research is needed so that it can be applied to reinforced concrete structures.

Contribution of Transverse Reinforcement Configuration on Concrete Shear Capacity of RC Column Taufiq Saidi; Rudiansyah Putra; Zahra Amalia; Munawir Munawir
Aceh International Journal of Science and Technology Vol 8, No 3 (2019): December 2019
Publisher : Graduate Program of Syiah Kuala University

Proper design of transverse reinforcement in the RC column is needed to maintain its ability to deform under axial and shear load safely. Even though mandatory building codes for transverse support of the RC column exist, shear failure was still found in the last high earthquake in Pidie, Aceh, in 2016. Therefore, as an attempt to improve RC column strength and elasticity, the effect of transverse reinforcement configuration was evaluated experimentally to a column subjected to an axial and shear load. The experiment was conducted by using four-column specimens with a cross-section 200 x 200 mm. Four types of transverse reinforcement configurations were applied in each column. The test was carried out by loading an axial load always and shear load gradually until its failure. The test results show that the configuration of transverse reinforcement has a significant effect of maintaining column stiffness, which was subjected to compressive axial load and shear load. Furthermore, the arrangement of transverse reinforcement influences the compressive strength significantly and enhance the concrete shear capacity of a column due to its confinement effect.

Behaviour Analysis of Strengthened-RC Beam with Natural Fiber Reinforced Polymer (NFRP) based on Abaca Fiber by Using Finite Element Method Taufiq Saidi; Muttaqin Hasan; Zahra Amalia; Muhammad Iqbal
Aceh International Journal of Science and Technology Vol 11, No 2 (2022): August 2022
Publisher : Graduate Program of Syiah Kuala University

The use of synthetic Fiber Reinforced Polymer (FRP) as a composite material is an alternative material that has been widely used for strengthening and repairing reinforced concrete structures. However, the high price is one of the obstacles in applying synthetic FRP materials in developing countries such as Indonesia. Utilization of natural fiber as a Natural Fiber Reinforced Polymer (NFRP) composite material is an alternative, especially in shear strengthening of reinforced concrete beams. Because it has good tensile strength and also is environmentally friendly. Technological developments in the field of computing make modelling various aspects easier. One of them is modelling reinforced concrete (RC) beams. ATENA V534 is a software that can be used for finite element-based modelling. Therefore, in this study, the ATENA V534 software was used to evaluate the results of research and testing behaviour of reinforced concrete beams from the previous studies about strengthened beam for shear by using NFRP. Behaviour that 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 in a good agreement with experimental results.

Tensile Strength of Natural Fiber in Different Type of Matrix Taufiq Saidi; Muttaqin Hasan; Zahra Amalia
Aceh International Journal of Science and Technology Vol 11, No 2 (2022): August 2022
Publisher : Graduate Program of Syiah Kuala University

In recent years, the used of product based with low environmental impact has become one of the considerations in the construction structure. Attention of the researchers towards the development of natural material has been increasing. The use of natural fibers as composite materials for strengthened structure have been studied. However, natural fibers are influenced by the hydrophilic nature and its specific morphology. Thus, research related to the natural fiber composite materials still needs to be explored. This study aims to evaluate the tensile strength of natural fiber composite materials based on the type of fiber, fiber layer used and its type of resin according to ASTM D3039. The results show that type of fiber, fiber layer used and its type of resin in the composite matrix considerably affects its tensile strength performance.

Preliminary Study of NFRP-Confined Concrete for Enhancing Compressive Strength Taufiq Saidi; Muttaqin Hasan; Zahra Amalia
Aceh International Journal of Science and Technology Vol 12, No 1 (2023): April 2023
Publisher : Graduate Program of Syiah Kuala University

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

Earthquake that occurred within a period of several years may be caused reinforced concrete column fails to maintain its performance. Reinforcement methods to improve the quality of concrete in resisting earthquake loads are needed. 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 one of the materials that has been 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. In this study, the test was carried out by applying a compressive load to concrete specimens reinforced with NFRP restraints. 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

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

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.

Faktor yang Mempengaruhi Minat Mahasiswa Akuntansi Untuk Memperoleh Sertifikasi Profesional Akuntansi Amalia, Zahra; Humaira, Megan Asri
Karimah Tauhid Vol. 3 No. 1 (2024): Karimah Tauhid
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/karimahtauhid.v3i1.9202

Artikel ini mengemukakan faktor yang mempengaruhi minat mahasiswa akuntansi dalam memperoleh sertifikasi professional akuntan. Ada empat faktor yang mempengaruhi minat mahasiswa dalam memperoleh sertifikasi yaitu, motivasi, pemahaman keprofesian akuntan, sosial dan karir. Pada penelitian dari artikel-artikel menggunakan teknik analisis regregsi yaitu, metode untuk menentukan kausalitas antar variabel bebas dengan variabel terikat lainnya. Dari empat faktor tersebut menurut artkel-artikel lainnya yang sudah melakukan pengujian menggunakan data primer melalui pengisian kuesioner. Hasil didapat bahwa ketiga faktor tersebut sangat berpengaruh signifikan dalam minat mahasiswa untuk memperoleh sertifikasi akuntan.

Pemanfaatan Limbah Beton Sebagai Pengganti Agregat Kasar Pada Kekuatan Beton Zakirah, Rana; Abdullah, Abdullah; Amalia, Zahra
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.v5i4.26566

Perkembangan pembangunan dalam bidang konstruksi di Indonesia seperti pada gedung, jembatan, dan produk konstruksi lainnya paling banyak dibangun dengan menggunakan beton. Banyaknya jumlah penggunaan beton dalam kontruksi bangunan mengakibatkan peningkatan kebutuhan material beton, Penggunaan kembali limbah beton untuk penggunaan beton dapat menjadi alternatif bahan beton yang menguntungkan. Recycled Concrete Aggregate (RCA) merupakan campuran material yang didapat dari proses daur ulang material yang sudah tidak digunakan. Penelitian ini bertujuan untuk mengetahui kekuatan beton yang dibuat dengan agregat kasar dari limbah beton. Benda uji dibuat dengan variasi penggunaan limbah beton yang digunakan sebagai subsitusi agregat kasar sebesar 0% dengan kuat tekan sebesar 27,6 MPa, variasi 50% agregat kasar dari limbah beton didapat kuat tekan sebesar 25,8 MPa dan variasi 100% agregat kasar dari limbah beton didapat kuat tekan 22,9 Mpa pada umur beton 28 hari. Dari hasil pengujian, beton dengan subsitusi agregat kasar sebesar 0% memiliki kuat tekan lebih tinggi dibandingkan variasi lainnya. Hal ini disebabkan karena agregat kasar dengan menggunakan campuran limbah beton dapat membuat terjadinya penurunan pada kuat tekan beton terhadap beton normal. Semakin tinggi persentase campuran limbah beton pada beton akan mengurangi mutu dari kuat tekannya.

Co-Authors Abdullah Abdullah Al-Bakri, Nazira Suha Aldri Frinaldi Asyifa, Cut Nella Chairun Nisa Dewi Seftiana A Dewi, Rahma Rosita Didi Erna Zakiyah Erwin, Intan Nabillah Fadlia, Faradilla Faradilla Fadlia Fatonah, Sabrina Putri Fitria Herliana Fu, Li Hambani, Susy Harahap, Khairunnisa Hasan, Muttaqin Herliana, Fitria Hulmun, Nai Wise Ibrahim, Adrian Icha Widya Putri Idris, Yunita Ikhwan, Firas Rafiqul Iskandar Hasanuddin Izzaty, Nur Jannah, Maharani Qonita Kana Puspita Lubis, Jihan Syahirah Mahlil, Mahlil Mahmud, Intan Silmi Alya Marsinah, Siti Maulani Al umi Maulida, Utami Megan Asri Humaira Mochammad Afifuddin Muhammad Azwar Muhammad Iqbal Muhammad Lie Kelvin Aidy Muhammad Nazar Munawir Munawir Muttaqin Hasan Muttaqin Hasan Muttaqin Hasan Nella Asyifa, Cut Nita Hestiyana Nugraheni, Sri Wahyuningsih Nur Izzaty Oktovi, Rama Pasha, Davina Aslamy Patrisa, Indira Cahya Puspita, Kana Putri Ramadhani Putri, Cindy Dinda Putri, Nanda Pratama Putri, Nurhaida Fahrisma Putri, Shinta Febryana Fambudi Rabia Wahdah Radianto, Syifa Auladina Rahmad Effendi Ramadhan, Rayhan RAMADHAN, WAHYUDI Rudiansyah Putra Sabilla, Siti Inayatun Salsabila, Lesya Adinda Siti Solehah, Siti Taufiq Saidi Taufiq Saidi Teuku Budi Aulia Teuku Budi Aulia Thamrin, Suyono Uswatun Hasanah Wahdah, Rabia Warizal Winda Maolinda Wirahman Salvana Yantie, Lisdha YANTO, SRI Yusria Darma Zakirah, Rana

Title

Found 30 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 30 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 30 Documents
Search