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Arman Setiawan
Universitas Bosowa, Makassar
Agriculture, Biological Sciences & Forestry Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Other

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Analisis Kuat Tekan Dan Kuat Lentur Beton Yang Menggunakan Serat Abaca Randan, Yurike; Setiawan, Arman; Yusuf, Andi Rumpang
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 3 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, September 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i3.1599

Abstract

Currently, various very rapid developments occur in the world of construction. One example is the development of concrete technology. Concrete is the result of technological engineering, concrete is produced from a mixture of cement, fine aggregate (sand), coarse aggregate (gravel), and water. Concrete is also usually added with certain materials to support the quality of the concrete. In this study, abaca fiber was used as an additive in the concrete mixture. The purpose of this study was to obtain the effect of adding abaca fiber by 0.5%, 0.75%, 1%, 2.72%, 4.08% and 5.44% on the weight of cement. Samples of test specimens were made of 50 samples, 20 samples of normal concrete and 30 samples of variation concrete. Treatment of the test object is done by soaking the concrete for 28 days. The compressive strength and flexural strength of concrete were tested when the age of the specimen reached 28 days. The results of this test indicate that the 0.5% variation of concrete has a compressive strength of 29.23 Mpa and a flexural strength of 5.33 Mpa. This shows that the addition of abaca fiber produces higher compressive and flexural strength values than normal concrete.
Reduksi Semen Dengan Campuran Fly Ash Dan Kapur Terhadap Kuat Tekan Dan Kuat Tarik Belah Beton Nur, Muhammad Alfian; Setiawan, Arman; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4246

Abstract

The use of concrete in construction continues to increase each year, leading to a rise in cement prices as the primary component of concrete. Given this situation, this study aims to reduce cement demand while utilizing waste materials, such as Fly Ash and lime, to partially replace cement. This research examines the effect of partially replacing cement with reduction levels of 5%, 10%, and 15%, substituted with a mixture of Fly Ash and lime in proportions of 75%:25%, 50%:50%, and 25%:75% for each reduction level. The target compressive strength of the normal concrete is 25 MPa. The results indicate that using Fly Ash and lime impacts the compressive and split tensile strength of concrete. At a 5% cement reduction with 75% Fly Ash and 25% lime, the compressive strength increased by 0.74% compared to normal concrete. In split tensile testing, optimal improvement was achieved at a 5% cement reduction with 25% Fly Ash and 75% lime, showing a 1.85% increase compared to normal concrete. This study demonstrates that partially replacing cement with Fly Ash and lime not only reduces cement usage but also enhances concrete performance, making it a promising alternative for sustainable construction.
Analisis Penggunaan Cangkang Kepiting Bakau Scylla Serrata Sebagai Subtitusi Parsial Semen Terhadap Kuat Tekan Dan Kuat Lentur Beton Dengan Bahan Tambah Superplasticizer Rahman, Laode Abdul; Syariman, Syahrul; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4371

Abstract

Agricultural waste such as crab shells has the potential to pollute the surrounding environment. Crab shells contain calcium carbonate (CaCO3) which will react with calcium hydroxide in cement, forming a solid compound called calcium silicate hydrate (CSH). This research examines the use of mud crab (Scylla Serrata) shell waste as a partial substitute for cement in making concrete, with the addition of a superplasticizer. The percentage of crab shells used is 0%, 10%, and 20%, as well as 2% superplasticizer. The research results showed a decrease in the compressive strength of concrete with crab shell substitution. At 10% substitution, the compressive strength decreased to 23.38 MPa, and at 20% substitution, it decreased to 16.14 MPa. The flexural strength of concrete also decreases, where 10% substitution produces a flexural strength of 3.53 MPa, and 20% substitution produces 1.60 MPa. With the addition of 2% superplasticizer, 10% crab shell substitution showed a compressive strength of 26.87 MPa, higher than normal concrete. However, at 20% substitution, the compressive strength decreased to 18.01 MPa. The flexural strength of concrete with 2% superplasticizer also decreased; 10% substitution shows a flexural strength of 3.87 MPa, higher than normal concrete, while 20% substitution decreases to 2.53 MPa.
Karakteristik Nilai CBR California Bearing Ratio Dan Permeabilitas Pada Tanah Lempung Dengan Penambahan Renolith Dan Fly Ash Samaa, Rifka Kendek; Sariman , Syahrul; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 3 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, September 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i3.4395

Abstract

Soil consists of relatively weak bonds between particles, often caused by carbonates, organic matter, or oxides that settle between the particles. As a construction foundation, soil sometimes does not meet the required specifications, such as clay, which has many limitations when used as a subgrade. Chemical additives can be used for soil reinforcement, such as Renolith and Fly Ash. In this study, each sample was substituted with 3% Renolith, along with Fly Ash additions of 10%, 15%, and 20%. For the California Bearing Ratio (CBR) test, three original soil samples were used, with an original CBR value of 25.38%. This value increased to 31.03% with the addition of 3% Renolith and 0% Fly Ash, showing that Renolith enhances CBR, with further increases seen with 3% Renolith plus 10%, 15%, and 20% Fly Ash. For permeability testing, one original soil sample was used, with each composition variation weighing 500 grams. The permeability coefficient of the original soil was 0.0017%, which increased to 0.0039% with 3% Renolith and 0% Fly Ash. This demonstrates that Renolith improves permeability, with further increases achieved by adding 3% Renolith plus 10%, 15%, and 20% Fly Ash. Using Renolith and Fly Ash can enhance the CBR and permeability coefficients, improving the load-bearing capacity of clay soil.
Analisis Campuran Gypsum Dan Kapur Terhadap CBR Dan Permeabilitas Tanah Lempung Kristina, Desi; Abduh, M. Natsir; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4494

Abstract

Soil improvement is needed to increase the soil's load-bearing capacity, one method being chemical stabilization using materials like gypsum and lime. Gypsum enhances soil stability due to its calcium content, which binds soil particles and reduces cracking. Lime strengthens the soil and reduces settlement by forming hydrates and minimizing capillary absorption. The goal of soil improvement is to bind and consolidate aggregate materials within the soil. Therefore, soil improvement using gypsum and lime is necessary for enhanced load-bearing capacity. In this study, CBR (California Bearing Ratio) and permeability tests were conducted with a gypsum substitution of 8% in each sample, and lime added at 15%, 20%, and 25%. The CBR and permeability values increased progressively. The original soil's CBR value was 16.15%, while soil mixed with gypsum showed values of 22.19%, 33.95%, 46.79%, and 53.06%, with a maximum increase of 53.00%. For permeability, the original soil had a rate of 0.0034%, and soil mixed with gypsum and lime showed rates of 0.0048%, 0.0057%, 0.0066%, and 0.0085%, with a maximum increase of 0.4117%.
Analisis Penggunaan Renolith Dan Fly Ash Terhadap Kuat Tekan Bebas Dan Kuat Geser Pada Tanah Lempung Joni, Yafettt; Yusuf, Andi Rumpang; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 3 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, September 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i3.4537

Abstract

Clay soil has weak particle bonding and low load-bearing capacity, making it less suitable as a subgrade material in construction. One method to address this issue is stabilization by adding renolith and Fly Ash to the clay soil as stabilizing agents that can bind and fill the soil’s pores. This study aims to evaluate the impact of renolith and Fly Ash on clay soil by testing its unconfined compressive strength and shear strength. The method used involved adding 6% renolith to each sample, with Fly Ash varied at 20%, 25%, and 30%. Mixing was done at the optimum moisture content, obtained from compaction tests. Three samples were prepared for each composition. The unconfined compressive strength of the original soil was 0.597 kg/cm², which increased with the addition of renolith and Fly Ash to 0.637 kg/cm², 0.663 kg/cm², 0.792 kg/cm², and 1.011 kg/cm². The original soil’s shear strength was 0.5835 kg/cm², which rose to 0.6428 kg/cm², 0.9398 kg/cm², 1.0285 kg/cm², and 1.2522 kg/cm² with renolith and Fly Ash. Thus, renolith and Fly Ash effectively enhance the unconfined compressive and shear strength of clay soil.
Analisis Pengaruh Lingkungan Kerja, Kepemimpinan Dan Disiplin Kerja Terhadap Kinerja Karyawan Perusahaan Konstruksi Pada Pembangunan Terminal Selatan Bandar Udara Internasional Sultan Hasanuddin Makassar Puspitasari, Hilda; Mulyani, Savitri Prasandi; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4548

Abstract

The low performance ethos displayed by employees of the Sultan Hassandin Makassar International Airport Development Project is of course related to the leadership implemented by the leader. Because leadership is an activity that influences and directs the behavior of subordinates or other people to achieve organizational or group goals. Apart from that, the work environment at the Sultan Hassandin Makassar International Airport Development Project is not good, there are still employees who appear relaxed during working hours, and there are also employees who chat with colleagues during working hours. Moreover, work discipline at the Sultan Hassandin Makassar International Airport Project Construction which is not conducive to work discipline can cause employee performance to be less than optimal. The quality of the work environment, work discipline and leadership of construction companies can have a significant and positive influence on employee performance at the Bandar Sultan Hasanuddin Makassar Development Project with an influence value on work environment variables of 0.483, leadership variables of 0.352, and work discipline of 0.454. Where in this research the work environment variable is the variable that has the greatest influence on employee performance in the construction of the southern terminal of Sultan Hasanuddin Makassar International Airport.
Alternatif Perhitungan Struktur Atas Rangka Baja Tipe Camelback Truss Pada Jembatan Tawaeli, Palu Sulawesi Tengah Ronaldi, Ronaldi; Sariman, Syahrul; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 2 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i2.4771

Abstract

As the demand for bridge infrastructure grows, efficient and effective alternatives for bridge design and analysis are essential. One such case is the Tawaeli I Bridge in Palu, Central Sulawesi, which requires careful design due to the city’s location in a high-seismic zone. The Camelback Truss steel bridge is ideal for this area because of its ability to withstand extreme conditions and provide structural stability during earthquakes. The design analysis for this type of bridge was performed using the Struktur FEM software, which evaluates bending, compression, and tension members. This analysis was validated through manual calculations. The section capacities obtained are: stringers (main longitudinal girders) IWF 500.200.11.17; cross girders (transverse girders) IWF 800.400.18.34; bottom chords (side longitudinal girders) IWF 650.650.18.34; top chords (upper members) IWF 650.650.18.34; diagonal chords (diagonal members) IWF 650.350.14.24; vertical chords (vertical members) IWF 600.200.11.17; transverse bracing IWF 250.250.9.14; diagonal bracing (wind bracing) angle 250.25.25. The mid-span deflection is 75.704 mm, within the allowable deflection of 87.5 mm. The accuracy between the Struktur FEM analysis and manual calculations is 99.9%.
Alternatif Perencanaan Penanggulangan Longsoran Menggunakan Dinding Penahan Tanah Type Cantilever Pada Ruas Jalan Toboli – Kebun Kopi Sulawesi Tengah Natasia, Icha; Nurdin, Abdul Rahim; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 2 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i2.5040

Abstract

According to ESDM, 215 ground motion events were reported during 2023. Landslides are natural phenomena that occur frequently and have a significant impact. Landslides also occur in road construction, such as the landslide on the Toboli - Kebun Kopi road section. There are two methods of dealing with landslides, namely preventive methods and curative methods. Preventive method is a method used to prevent landslides, while curative method is a method used to handle landslides that have occurred. On the Toboli - Kebun Kopi road section, landslides have occurred, therefore the countermeasure uses curative methods, one of which is a cantilever type retaining wall. The purpose of this research is to obtain the stability value of slope structure, and predict whether deformation occurs after countermeasures are taken. Based on the results of the analysis, the structural stability value is bolster: 2.850 > 2 (safe), shear: 2.268 > 1.5 (safe) and soil bearing capacity: 106 > 3 (safe). And the stability of slope after being given countermeasures using the finite element method with help of the plaxis program on saturated slopes: 1.60 and unsaturated slopes: 1.90. After given countermeasures deformation occurs on saturated slopes by 3.59 cm and unsaturated by 3.42 cm.
HIGH STRENGTH CONCRETE USING FLY ASH A CEMENT AND FINE AGGREGATE Bachtiar, Erniati; Setiawan, Arman; Musahir, Fajar
ASTONJADRO Vol. 11 No. 2 (2022): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v11i2.6725

Abstract

At the moment, the cost of concrete is quickly increasing as the cost of cement and aggregates continues to rise. As a result, a replacement for fine aggregate as well as a substitute for cement is required to decrease the cost of concrete production. In general, concrete is composed of cement as a base material that is workable and satisfies specified performance, durability, and strength criteria, aggregate, and water. In the field of engineering constructions, reinforced high-strength concrete has a significant impact on development. Apart from its exceptional strength, this kind of concrete must exhibit workability, minimal shrinkage, release characteristics, and self-compaction. The authors of this research performed a literature review to explore high-quality concrete made using fly ash as a replacement for cement and fine particles. Fly Ash is a waste product or byproduct of the coal-fired power plant's combustion process. Fresh concrete made using fly ash as cement and fine aggregate has an average slump value of 90-200 mm. The compressive strength of concrete made with fly ash ranges between 35 and 60 MPa after a 28-day curing period. The optimal percentage of fly ash in high-strength concrete is between 10% and 30%.
Co-Authors Abduh, M. Natsir Adum, Adum Ahmad Yauri Yunus Al Anzari, Dedi Arham Alloto'dang, Hizkia Rial Andi Rumpang Yusuf Andy Herlambang Asrar Asrar Eka Yuniarto Erniati Bachtiar Farida Isroani Faris Jumawan, Faris Fatmawati Rachim Fauzy Lebang Febryansah Febryansah Fitriani, Lisna Annisa Fudlailah, Pratiwi Hijriah Hijriah Jamil Gunawi Joni, Yafettt Juniarti, Ana Kristina, Desi Maraya Danusaputra Megananda David Prasetya Meldawati Artayani, Meldawati Muh. Ramdhan Ainun Wicaksono Muhammad Ihsan Mulyani, Savitri Prasandi Musahir, Fajar Mustaan, Mustaan Natasia, Icha Nur, Muhammad Alfian Nurdin, Abdul Rahim Puspitasari, Hilda Putu Artawan, I Rahman, Laode Abdul Rahman, Muhammad Junaedy Randan, Yurike Renaldi, Renaldi Z Ridwan Ridwan Ridwan, Ridwan Rino Dwi Laksono Ritnawati Makbul Rizaldo Bagus Dinata Ronaldi, Ronaldi Samaa, Rifka Kendek Sariman , Syahrul Sariman, Syahrul Setiawan, Asri Mulya Sri Gusty Surya, Andika Syahrul Sariman Syahrul Sariman Syahrul, Syahlendra Syariman, Syahrul Thamrin Abduh Yudha Alam , Gigih Zainal Abidin Haris Zasqia Ainun Madjidah Nganro