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All Journal Jurnal Rekayasa Sipil Jurnal Kimia Terapan Indonesia International Journal on Livable Space Momentum International Journal of Civil Engineering (MIJCE)
Agung Sumarno
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation

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PEMBUATAN BLOK REM KOMPOSIT SEBAGAI PENGGANTI BLOK REM KONVENSIONAL PADA MODA TRANSPORTASI KERETA API INDONESIA Eko Widodo; Agung Sumarno; Ismadi Ismadi
Rekayasa Sipil Vol 5, No 1 (2016)
Publisher : Universitas Mercu Buana

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Abstract

Blok rem komposit mulai diminati sebagai pengganti blok rem konvensional. Hal ini dikarenakan pemakaian blok rem komposit lebih menguntungkan dibandingkan dengan blok rem konvensional antara lain adalah lebih ringan, lebih awet, dan pemasangannya lebih mudah. Pada penelitian ini, dilakukan pembuatan blok rem komposit dengan menggunakan arang tempurung kelapa. Arang tempurung kelapa dipakai sebagai pengganti grafit yang berfungsi sebagai material gesek . Penelitian ini dilakukan di Pusat Penelitian Biomaterial LIPI.Blok rem komposit dicetak  sesuai ukuran blok rem tipe T 358 N. Komposisi penyusun blok rem komposit yaitu alumina (Al2O3), grafit/arang tempurung kelapa, barium sulfat (BaSO4), phenolic resin, kalsium hidroksida (Ca(OH)2), serbuk besi, nitrile butadiene rubber, dan serat sabut kelapa.  Penelitian ini dilakukan dengan memvariasikan beberapa sampel  dengan sampel A 100% arang , sampel B 50% arang-50% grafit, dan sampel C 100% grafit. Pengujian yang dilakukan adalah uji rendam, uji rendam dan oven, uji kekerasan, uji bending, dan uji tekan. Hasil pengujian menunjukkan bahwa sampel B dengan kerapatan 1,955 g/cm3, kuat tekan 3308,6 n/mm2,MOR 2379,3 N/mm2, MOE 305079 N/mm2, dan kekerasan 85,3 HRR memiliki sifat yang lebih baik karena sebagian memenuhi spesifikasi teknik PT. KAI.
KAJIAN KEKUATAN BAMBU LAMINASI SEBAGAI BAHAN BANGUNAN DI INDONESIA Agung Sumarno; Eko Widodo
Rekayasa Sipil Vol 5, No 1 (2016)
Publisher : Universitas Mercu Buana

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Abstract

Saat ini telah banyak penelitian mengenai bambu laminasi sebagai bahan baku alternatif pengganti kayu untuk bahan bangunan, namun belum ada standar perhitungan untuk konstruksi bambu sebagai komponen struktur. Hasil perhitungan menggunakan standar konstruksi kayu tersebut kemudian dibandingkan dengan kajian pustaka penelitian bambu laminasi secara eksperimental. Ruang lingkup perbandingan meliputi kekuatan tarik dan kekuatan tekan. Selain itu, menggunakan beban merata dibandingkan pula kekuatan terhadap lentur dan geser serta lendutan. Hasil yang diperoleh memperlihatkan bahwa kekuatan bambu pada pustaka yang digunakan selalu melebihi perhitungan menggunakan standar konstruksi kayu. Hal ini menunjukkan standar konstruksi kayu boleh digunakan untuk perhitungan konstruksi bambu laminasi. Selain itu, bambu Dendrocalamus asper yang umum dijumpai di Indonesia sangat berpotensi untuk dikembangkan menjadi bambu laminasi yang diproduksi masal menggantikan bambu Guadua agustifolia Kunt.
Self-Healing Concrete Using Bacteria Calcification from Karst Cave Environment Ananto Nugroho; Agung Sumarno; Luna Nurdianti Ngeljaratan; Deni Zulfiana; Ni Putu Ratna Ayu Krishanti; Triastutil Triastutil; Eko Widodo
Jurnal Kimia Terapan Indonesia Vol 21, No 1 (2019)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (45.98 KB) | DOI: 10.14203/jkti.v21i1.411

Abstract

Karst regions in Indonesia have the uniqueness of the landscape and biodiversity. The karst is formed by the dissolution of rocks and the precipitation of mineral. In the cave, there are ornaments of stalactite and stalagmite which are formed by the process of mineral precipitation. We have isolated, screened, and identified the soil bacterium from the cave environment (Lysinibacillus macroides). These bacteria are able to precipitate calcium carbonate and can be developed as a self-healing agent concrete. We investigated the proportions and the properties of mixtures concrete containing lightweight aggregate and volcanic ash impregnated with bacteria. A comparison study was made by concrete cylinders subjected to compressive strength tests with and without the bacteria. It found that the strength of concrete with bacteria decreased by less than 10.56% for 28 days of cured specimens. This study showed that the effects of bacteria on the strength of concrete are not considerable. However, these bacteria are effective to repair in the microcrack less than 0.3 mm
REVIEW OF THE EFFECT OF INDUSTRIAL WASTE ON SELF COMPACTING CONCRETE Tengku Alif Rafli Mosyani; Lisa Oksri Nelfia; Agung Sumarno
International Journal on Livable Space Vol. 8 No. 1 (2023): IMAGE OF THE CITY, BUILDING CONSTRUCTION AND MATERIAL
Publisher : Jurusan Arsitektur - FTSP - Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/livas.v8i1.19474

Abstract

Self-Compacting Concrete (SCC) is an innovation in concrete technology used in building elements with dense and complex reinforcement frameworks. SCC is characterized by its high fluidity and the ability to self-compact without the use of vibrators. Superplasticizer is one of the components applied in the production of SCC. The use of superplasticizer aims to reduce water consumption, accelerate the setting time, improve concrete workability, and also make the concrete impermeable. As time progresses, industrial waste continues to increase, highlighting the importance of recycling industrial waste. The purpose of this research is to investigate the influence of industrial waste as a substitute material for fine aggregates on the workability and compressive strength of SCC. This study is the result of a literature review obtained by examining various sources including books, proceedings, as well as international and national journals. The results of this literature study involve the use of industrial waste materials such as recycled glass, granite waste, nickel slag, and copper slag as substitutes for fine aggregates. The results of the workability and compressive strength of SCC are influenced by the characteristics of each industrial waste used. This indicates an improvement in the flowability (slump flow) with an increasing percentage of industrial waste, ranging from 0% to 60%, in the concrete composition. Compressive strength test results indicate that the optimal percentage of industrial waste addition in the concrete composition lies between 20% and 40%."
Performance-Based Seismic Analysis and Design of a Mid-Rise RC Guest House in a High Seismic Zone of Indonesia Harto Nurbian; Agyanata Tua Munthe; Syafwandi; Agung Sumarno
Momentum International Journal of Civil Engineering (MIJCE) Vol. 1 No. 2 (2025): July
Publisher : Marasofi International Media and Publishing (MIMP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64123/mijce.v1.i2.2

Abstract

This study presents the seismic-resistant structural design of a 3-storey guest house with a roof garden, located in Surabaya, Indonesia, an area classified as Earthquake Zone 6. The building is designed using a Special Moment Resisting Frame System (SMRFS) as per SNI 1726:2019, which is appropriate for high seismic risk areas. The equivalent static lateral force method is employed for seismic analysis. Structural modeling and upper-structure design are performed using ETABS, while sub-structure components such as pile caps and foundations are analyzed manually and supported by PCA Column software. The structural elements are designed according to Indonesian codes, including SNI 2847:2019 for reinforced concrete, SNI 1727:2020 for minimum loads, and SNI 2052:2017 for steel reinforcement. The final design yields column dimensions ranging from 200×400 mm to 600×600 mm and beam dimensions from 250×400 mm to 350×700 mm, with slab thicknesses of 120 mm and 150 mm. The results confirm that the structure meets strength, stiffness, and ductility requirements. This research ensures compliance with national standards while enhancing structural safety in high seismic zones.
Co-Authors Ananto Nugroho Deni Zulfiana Dewi Liesnoor Setyowati Harto Nurbian Ismadi Ismadi Lisa Oksri Nelfia Luna Nurdianti Ngeljaratan Munthe, Agyanata Tua NI PUTU RATNA AYU KRISHANTI Syafwandi Tengku Alif Rafli Mosyani Triastutil Triastutil