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All Journal Civil and Environmental Science Journal (CIVENSE) ETAM: Jurnal Pengabdian kepada Masyarakat INERSIA
Sutarto, Tommy E.
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PENGUJIAN KUAT TEKAN BETON DENGAN PENAMBAHAN FLY ASH DAN ADMIXTURE SUPERPLASTICIZER Hadori, Ahmad; Pranoto, Yudi; Sutarto, Tommy E.
JURNAL INERSIA Vol. 7 No. 1 (2015): Jurnal Inersia
Publisher : POLITEKNIK NEGERI SAMARINDA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Beton merupakan salah satu bahan konstruksi yang telah umum digunakan untuk bangunan gedung, jalan, jembatan dan lain sebagainya. Kalimantan Timur sebagai daerah yang sedang berkembang pesat terutama untuk sektor pembangunan. Beton banyak digunakan karena memiliki kelebihan daripada bahan lain, diantaranya harganya relatif murah, memiliki kekuatan yang baik, tahan lama dan tahan terhadap api. Dalam pelaksanaannya di lapangan terutama untuk mempermudah proses pengecoran diperlukan bahan tambah. Pada penelitian ini digunakan superplasticizer dan fly ash sebagai bahan tambah pada campuran beton dengan fariasi yang berbeda, untuk superplasticizer menggunakan 3 bahan produk superplasticizer yang berbeda yaitu produk Sika, BASF dan normet dengan kadar 0.3%,0,6%,0,9%,1,2% dan 1,5% dan untuk kadar fly ash sebesar 10 %. Dari komposisi tersebut kemudian dilakukan pengujian kuat tekan beton. Hasil penelitian menunjukkan kuat tekan beton optimum untuk produk Sika sebesar 42,81 MPa dengan kadar superplasticizer 0,3 %, produk BASF diperoleh 40,93 Mpa dengan kadar 0,6 % dan produk Normet diperoleh 40,76 Mpa dengan kadar 0,6 %. Pada beton dengan bahan tambah produk sika terjadi peningkatan paling besar yaitu sebesar 17,84 % bila dibandingkan dengan beton normal. Untuk beton dengan bahan tambah produk BASF terjadi peningkatan sebesar 9,09 % dan untuk beton dengan bahan tambah produk Normet terjadi peningkatan paling kecil yaitu sebesar 2,13 %.
Panduan Ringkas Pemeliharaan dan Perbaikan Jembatan Kayu Sutarto, Tommy E.; Kamil, Insan; Tumingan; Barus, Freddy; Widiawati, Dhiana D.; Firsty, Melviana; Ahmad, Raudah; Wulandari, Fitri; Pamungkas, Pulung P.; Nugroho, Septian A.; Nasir, M.
Jurnal ETAM Vol. 5 No. 1 (2025): FEBRUARY
Publisher : Politeknik Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46964/etam.v5i1.1302

Abstract

Numerous timber bridges in Samboja District, East Kutai Regency, remain outside the scope of maintenance and rehabilitation programs by both the Provincial and Regency Governments. It is essential to encourage local communities to take initiative and independently engage in the maintenance and repair of these bridges. One effective approach involves providing education and practical demonstrations to raise community awareness and equip them with the necessary skills for timber bridge maintenance and repair. The Civil Engineering Department of Samarinda State Polytechnic organized such an initiative at the Margomulyo Village Meeting House, located in one of the villages in Samboja District. Approximately 35 participants, including local residents, village officials, and neighborhood leaders, attended the session. The program combined educational counseling with community service and hands-on demonstrations of timber bridge inspection and maintenance, facilitated by students from the Civil Engineering Department. The participants actively engaged throughout the event, demonstrating enthusiasm and commitment. As a result of this initiative, the local community has been empowered with practical knowledge and skills to independently maintain and repair timber bridges in their area. Through this combination of education, demonstration, and community service, a foundation for sustainable bridge upkeep has been successfully established. Furthermore, the knowledge and skills can be disseminated to other neighborhoods with similar problems.
Evaluation of Drainage System Performance in Urban Areas at Risk of Flooding: A Case Study on Prima Street to Sungai Buun, West Kotawaringin Regency Barus, Freddy; Sutarto, Tommy E.; Widiawati, Dhiana Dwi
Civil and Environmental Science Journal (CIVENSE) Vol. 8 No. 1 (2025)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2024.008.01.7

Abstract

The flooding phenomenon in the Prima Street area is due to a lack of facilities, sub-optimal drainage channel conditions, bottlenecks, and elevation differences in the Box Culvert. The purpose of this study is to evaluate the storage capacity of the existing channel along Prima Street toward Sungai Buun and provide recommendations. The measurement results show that the elevation difference in the drainage channel with the Prima Street box culvert is ± 1.39 meters. The evaluation results show that the storage capacity of the existing channel on Prima Street (point 2) of 0.372 m³/s is smaller than the flood discharge of 0.490 m³/s. Flooding also often occurs in the channel behind Rocket Chicken (point 3) because the channel storage capacity is smaller than the flood discharge of 1.723 m³/s and 2.213 m³/s, respectively. There are three alternative solutions. The first alternative plans the drainage channel at point 2, with the base width (B) and top width of the channel (T) of 1.715 meters, channel depth (h) of 1.286 meters, normal depth of 0.857 meters, and accommodated discharge of 0.735 m³/s. Furthermore, the design flood discharge for a 5-year return period is 0.490 m³/s. The second alternative plans the drainage channel at point 3, cross section of the base width (B) and top width of the channel (T) 1.847 meters, channel depth (h) 1.386 meters, and normal depth at an elevation of 0.924 meters. The third alternative readjusts the base elevation of the Box Culvert to an elevation of ± 1.39 meters.
Co-Authors Ahmad, Raudah Barus, Freddy Firsty, Melviana Fitri Wulandari Hadori, Ahmad Kamil, Insan M. Nasir Nugroho, Septian A. Pamungkas, Pulung P. Tumingan Widiawati, Dhiana D. Widiawati, Dhiana Dwi Yudi Pranoto