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Journal : Rekayasa Sipil

Sisa Umur Bangunan Vital Pada Bangunan-Bangunan Teknik Sipil (Studi Kasus : Chimney PLTU Gresik Unit 1 Dan 2) Cahya, Indra; Hidayat, Taufik; Unas, Saifoe El; Susanti, Lilya
Rekayasa Sipil Vol 6, No 3 (2012)
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (789.848 KB)

Abstract

Bangunan secara umum direncanakan dengan fungsi dan masa layan tertentu. Keduanya dapat tercapai apabila dalam proses perencanaan, pelaksanaan hingga perawatan dan pemeliharaannya telah memenuhi persyaratan yang telah ditetapkan. Hal ini mengingat perawatan dan pemeliharaan berperanan penting dalam tercapainya rencana masa layan bangunan sesuai fungsinya.Dalam masa layan dapat terjadi berbagai kondisi/ kerusakan yang mengarah pada turunnya (deteriorasi) fungsi kinerja bangunan dan berdampak pada lifetime bangunan.Tujuan dari penelitian ini adalah untuk menyelidiki sisa umur bangunan pada struktur Chimney PLTU Gresik unit 1 dan 2. Selain itu juga akan dibahas mengenai faktor-faktor yang berpengaruh terhadap kemampuan masa layan bangunan tersebut.Berdasarkan hasil penelitian yang telah dilakukan pada kondisi eksisting Chimney PLTU Gresik unit 1 dan 2, dapat diketahui bahwa sisa umur bangunan dengan kondisi eksisting adalah 10 tahun. 
Sustainability and Environmental Impact of Polymer Concrete with Styrene Monomer and GGBFS In Structural Applications: A Literature Review Nursamhuda, Wahyu; Susanti, Lilya; Wijaya, Ming Narto
Rekayasa Sipil Vol. 19 No. 1 (2025): Rekayasa Sipil Vol. 19 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.01.12

Abstract

Polymer concrete using styrene monomer and Ground Granulated Blast Furnace Slag (GGBFS) as key components show great potential in sustainability and environmental impact for structural applications. This study examines its ability to reduce carbon emissions, improve energy efficiency through recycled materials, and reduce reliance on Portland cement. Using styrene monomer enhances resistance to corrosion and cracking but also presents challenges related to volatile organic compound (VOC) emissions, which are harmful to the environment. The literature review concludes that although this polymer concrete shows promise as an environmentally friendly material, further development is needed to address sustainability challenges, particularly in production and material recycling processes. Additional research is required to overcome production efficiency and material recycling challenges.
Flexural behaviour of bamboo-based bamboo cement slab panels with GGBFS (Ground Granulated Blast Furnace Slag) Hylga Rohman; Murni Dewi, Sri; Susanti, Lilya
Rekayasa Sipil Vol. 19 No. 2 (2025): Rekayasa Sipil Vol. 19 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.02.1

Abstract

Recently, in response to the problem of global warming and the need for a sustainable society, production using natural materials has begun to increase. Bamboo, which is low in price, fast-growing, and widespread, is believed to contribute greatly to construction. Bamboo, available in abundance, can be used as a substitute for iron or wire. GGBFS, a residue from steelmaking, can be used as a substitute for cement in standard mortar or concrete mixes. The flexural properties of ferrocement slab panels using bamboo have been analyzed to increase the service capacity limit. Experimental studies were conducted on supported ferrocement slab panels with gradually increasing loads. The series of experiments involved testing 12 ferrocement slab panels of size 300 mm x 600 mm and thickness 50 mm. From these plates, 4 test samples were made using a conventional mortar mix of 1:2 and variations of 0%, 10%, 20%, and 30% cement replacement. Bamboo strips were used as structural reinforcement. The samples were poured, stored in moist gunny sacks for 28 days, and then tested with a three-point load. The test results were then compared with the theoretically expected results. The evaluation results showed that the initial cracking load and experimental failure load occurred at the center of the slab in all four types of slabs. The maximum load is about twice the initial cracking load. Each of the plates showed significant flexibility before reaching ultimate failure. In this case, cement bamboo slabs can be used for roofs or structures that do not require high loads.
Comparison of Strain Histories on Reinforced Concrete Eccentric Braced Frame (EBF) With Vertical and Horizontal Link Wijaya, Ming Narto; Susanti, Lilya; Pinontoan, Frisca Presley
Rekayasa Sipil Vol. 19 No. 2 (2025): Rekayasa Sipil Vol. 19 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.02.5

Abstract

This study investigates the seismic performance of reinforced concrete Eccentrically Braced Frames (EBF) with vertical and horizontal link beams subjected to cyclic loading. The main objective is to compare strain histories and evaluate energy dissipation in vertical and horizontal link configurations. Experimental results indicate that vertical links, especially those with shorter lengths (15 cm), exhibit higher strain values, leading to significant plastic deformation and enhanced energy dissipation, though at the cost of increased damage and repair needs. Conversely, horizontal links remain largely within the elastic range, maintaining better structural integrity but offering less energy dissipation during seismic events. The CBF (Concentrically Braced Frame) control specimen showed minimal deformation and lower energy absorption. The findings suggest that vertical links are more suitable for energy dissipation in seismic design, while horizontal links offer greater durability and lower post-event maintenance. The balance between energy absorption and repairability is crucial for optimizing EBF systems in earthquake-prone areas. (explain the findings related to the purpose of this paper: to determine the effects of link orientation on strain distribution, energy dissipation, and structural integrity during seismic events).
Seismic Capacity of Reinforced Concrete Eccentric Braced Frame (EBF) With Vertical Link Using 20% GGBFS I Gde Eka Wiranatha; Wijaya, Ming Narto; Susanti, Lilya
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.7

Abstract

EBF-V bracing is highly attractive due to its good seismic performance in high seismic zones. Vertical link beams as a component are capable of high elastic displacement and ductility to absorb lateral forces through shear-bending collapse mechanisms. However, the lateral load capacity of the bracing has to be sacrificed as it tends to decrease. The present study focuses on the capacity and lateral behavior of reinforced concrete eccentrically braced frame (EBF) with vertical link beam and tighter reinforcement spacing in the link beam in combination with GGBFS. GGBFS at 20% can improve the mechanical properties by reducing the pore number of the concrete due to the smaller particle size of OPC.This study uses CBF-V as a control to investigate the seismic behavior of tightly spaced transverse reinforcement (75 mm) in EBFs’s vertical link beam with eccentricities of 15 cm and 25 cm. In addition, the role of GGBFS was also observed through the displacement and ductility of the frame. As a result, the CBF has the highest plasticity. However, the tight reinforcement spacing of the vertical link beam in the EBF-V-15 results in the highest restraint, resulting in excellent stiffness and ductility through earthquake absorption with a shear collapse mechanism. In addition, GGBFS also plays a role in improving the collapse mechanism, which is characterized by large elastic displacement and high ductility.
Crack Behavior of Eccentrically Braced Frame Type-V with Ground Granulated Blast Furnace Slag Yohanes Ola Sira Lamawato; Susanti, Lilya; Wijaya, Ming Narto
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.8

Abstract

To make the structure stronger and stiffer, which is more susceptible to earthquake forces, a special mechanism is required to improve the structure's lateral stability. EBF-V with a horizontal link beam is a brace that can enhance structural performance by providing good stiffness and ductility. On the other hand, GGBFS, as a partial OPC replacement material, was applied to contribute to using more environmentally friendly materials. Besides offering a smaller carbon footprint, GGBFS also positively improves the mechanical properties of concrete. Thus, this study focuses on investigating the crack propagation pattern of reinforced concrete braced frames combined with 20% GGBFS in EBF-V with three variations of link beam element lengths of 0 cm (CBF), 15 cm (EBF-V-) and 25 cm (EBF-V-25). As a result, the CBF specimen showed the best seismic performance. In EBF specimens, there is an increase in the collapse mechanism to be more ductile. The link beam plays a role in making the crack pattern more focused. EBF-V-15 performs well under seismic loading with large lateral capacity and ductility. The cracks in the frame are evenly distributed, dominated by fine cracks, and symmetrical on both sides. This validates that GGBFS plays a good role in improving the frame performance with its pore-filling effect and pozzolanic reaction.
Co-Authors ., Kholilurrohman ., Nabila A.A. Ketut Agung Cahyawan W Achfas Zacoeb Adinda Maharani, Ghea Nabila Agraprana, Andhika Alriyandi, Ariq Amjad, Firhan Rezi Anggara Putra, Dyorizky Imaduddin Ari Wibowo Aris Subagiyo Arista, Talitha Asmara Dana, Aldi Jaka Athhtaariq, M. Falah Brahmana K, Bhondana Bayu Brahmana Kridaningrat, Bhondana Bayu Brahmana Bria Seran, Rey David Budi Santoso, Farouk Angga Cahyo, Fahrizal Dwi Cendekiawan Putra, Moch Aldin Christin Remayanti N. Desy Setyowulan Devi Nuralinah Dinatra, Iqbal Rizky Dini, Hanita Nurilina F, Ananda Insan Fahrudin, Rizqi Faisal, Imam Bagus Farhani, Muhammad Rizqi Febrian, Dicky Hamdani Firdausy, Ananda Insan Firdausy, Ananda Insan Franandha, Septriana Bella G. P., Julius Nanda Gunawan Prayitno Hafiizh, Yusril Heryanto, Sri Hidayat, Muhammad Farras Hylga Rohman I Gde Eka Wiranatha Ikhsan, Erika Ainun Zakinah Indra Cahya Indra Waluyohadi, Indra Iqbal, Muhammad Irfandi, Rofif Alfiros Jarwo Saputra, Muhammad Aldo Kamal, Wan Muhammad Kanugrahan Dawam, Muhammad Irfan Khamdani, Muhammad Ali Kurniawan, Fajri Kusumatantri, Agnes Laksono, Rizal Adhit M. Taufik Hidayat Mahendra, Muhammad Reza Marami S. A., Fat-Hanna Maulana, Dicky Akbar Ming Narto Wijaya Mohammad Taufik Hidayat Muhammad Yusuf, Fathullah Munadi, Abu Qasim, Muhammad Yusuf, N., Faiq Putra Nainggolan, Christin Remayanti Najid, Salsa Alifia Narto Wijaya, Ming Nisak, Fajar Fadhilatun Nugroho, Bagus Prasetyo Nurfidiani Putri, Qisthina Tamimi Nuriani Virgianti, Febbi Ayu Nursamhuda, Wahyu P, Erlangga Adang P., Naadiyah Widyadhana Pangestu, Rizki Ayu Pinontoan, Frisca Presley Pramesthi, Shifa Ardhelia Pramitari W.D, Sagung Istri Pramono, Jafar Aji Prasetyo, Andi Pratama, Firman Yudi Pratama, Firman Yudi Prayoga, M. Fajar Purwaningsih, Anis Puspitasari, Isnana Putra, Yogatama Sujatmiko Putri Aji, Gumelar Asrining Putri, Desy Trikurnia Putri, Herawati Dewi Putri, Mangesti Carissa Rahma, Aisha Hawina Rahmawati, Dian Ramadhan, Firmansyah Ramadhani, Muhammad Alfian Ramayadi, Muhammad Faisal Refandi, Ricky Rivaldo, Wahyu Ruslin Anwar Sabrina, Raissa Saifoe El Unas Salim, Ahmad Agus Sani, Firzi Maulana Saputri, Meirheyma Denfia Satriopratomo, Dhimas F. Satriopratomo, Dhimas F. Satrya, Rahmat Budi Saulina Situmorang, Gracesella Novita Sembiring, Aldi Efrata SembiringMaha, Syella Audina Setiadi, Alan Dharmasaputra Setiawan, Fadilah Shavira, Alexandra Shana Silalahi, Jogi Sitanggang, Gilbert Siti Nurlina Sri Murni Dewi Sri Murni Dewi, Sri Sri Wahyuni Syafirra, Sonnia Taffareld, Muhammad Firhand Tuanany, Syafiqah Rizky V P, Andreas Brian W., Dicky Wirasatya W., Ramadhan Budhi Waluyo, Ajit Rachmatsyah Wasiska Iyati Wicaksono, Armanda Wisnu Wijaya, I Nyoman Suluh Wijaya, Ming Wisnumurti . Yatnanta Padma Devia Yohanes Ola Sira Lamawato Yulianto, Angga Restu