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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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Mikrostruktur, Porositas Dan Sifat Mekanik Beton Curing Air Laut Bachtiar, Erniati; Setiawan, Asri Mulya; Setiawan, Arman; Fudlailah, Pratiwi
Jurnal Talenta Sipil Vol 7, No 1 (2024): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v7i1.492

Abstract

When constructing buildings in coastal areas, contact between the materials used and sea air is sometimes unavoidable. Before the concrete reaches its maximum strength at the age of 28 days, it can be exposed to contamination from sea air. Consequently, chemical reactions involving cement, air, and sea air become inevitable. The research aims to ascertain the microstructure, porosity, and mechanical properties (compressive strength and tensile strength) of high-performance concrete utilizing the Self Compacting Concrete method. Two variations of concrete samples are considered, involving differences in the curing water used and the age of the concrete. There are two curing variations: concrete cured with fresh water and concrete cured with seawater. The concrete's age is monitored at 1, 3, 7, 28, and 90 days. In the microstructure analysis of seawater-cured concrete, chloride compounds, ettringite, and Friedel's salt were identified. Both compressive strength and splitting tensile strength show an increase with the concrete curing age, and they are inversely proportional to the concrete's porosity. The mechanical properties of freshwater-cured concrete are slightly lower than those of seawater-cured concrete. However, the difference is negligible, meaning they are nearly identical at both 28 days and 90 days.
Pengaruh Penggunaan Abu Batang Pisang Dan Abu Cangkang Sawit Ditambah Sikacim Concrete Additive Terhadap Kuat Tekan Beton Alloto'dang, Hizkia Rial; Sariman, Syahrul; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 2 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i2.3266

Abstract

Research on increasing the compressive strength of concrete by using various types of additives has been widely carried out, so this research also uses additives, namely the use of banana stem ash and palm shell ash, which aims to determine the comparison of the two additives, as well as the effect of adding concrete. Contains Sikacim Concrete Additive. Variations in banana stem ash and palm shell ash (4%, 5% and 6%) of the cement weight as well as the addition of Sikacim Concrete Additive as much as 0.6% of the cement weight. The average compressive strength of the concrete samples was measured and compared. The research results showed that the higher the percentage of banana stem ash and palm shell ash used, the higher the compressive strength of the concrete produced. The compressive strength of variations in banana stem ash is greater than variations in palm shell ash with percentages of 14.13%, 11.17% and 7.08. The effect of adding sikacim concrete on banana stem ash was 3.17%, 1.39%, 6.73 and on palm shell ash was 2.88%, 4.32%, 3.99% compared to before adding sikacim. Banana stem ash at a percentage of 6% with the addition of sikacim had the highest increase with a compressive strength of 29.91 Mpa.
Pengaruh Penambahan Na2CO3 Terhadap Konsistensi Dan Kuat Geser Pada Tanah Lempung Renaldi, Renaldi Z; Sariman, Syahrul; Setiawan, Arman
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 2 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i2.3331

Abstract

Clay soils in general can be said to have a low carrying capacity. Therefore, it needs to be treated if it will be used as a construction base. This study aims to determine the effect of adding Na2CO3 (sodium carbonate) on the consistency and shear strength in clay soils. This study was conducted by preparing a mixture of various concentrations of Na2CO3, namely 0.4%, 0.6%, 0.8% and 1.0%, which were added to clay soil samples, which is added to clay soil samples. Consistency testing using the Atterberg limit test (Casagrande Stone). The results showed that the addition of Na2CO3 had an influence on the consistency of clay soil. In the shear strength test, there are values of cohesion, shear angle and shear strength, where the percentage of mixture increases. So that in this test the optimum shear strength value can be obtained on a mixture of 1% Na2CO3 soil.
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.
Co-Authors Abduh, M. Natsir Adum, Adum Al Anzari, Dedi Arham Alloto'dang, Hizkia Rial Andi Rumpang Yusuf Arif, Muh Panca Zainuddin Asrar Asrar Badrun, Burhanuddin Damayanti, Alilah Saskia Danusaputra, Maraya Eka Yuniarto Erniati Bachtiar Farida Isroani Faris Jumawan, Faris Fatmawati Rachim Febryansah, Febryansah Fitriani, Lisna Annisa Fudlailah, Pratiwi Gunawan, Andi Candra Haris, Zainal Abidin Herlambang, Andy Hijriah, Hijriah Jamil Gunawi Jayanti, Nadya Eka Joni, Yafettt Juniarti, Ana Kristina, Desi Lebang, Fauzy Mappa, Muh Hijrawansa Mayumi, Emilia Meldawati Artayani Muhammad Ihsan Musahir, Fajar Mustaan, Mustaan Natasia, Icha Nganro, Zasqia Ainun Madjidah Nur, Muhammad Alfian Nurdin, Abdul Rahim Prasetya, Megananda David 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 Sikanna, Ferdi Sri Gusty Surya, Andika Syahrul Sariman Syahrul, Syahlendra Syariman, Syahrul Thamrin Abduh Wicaksono, Muh. Ramdhan Ainun Yudha Alam , Gigih Yunus, Ahmad Yauri