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All Journal Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Jurnal Abdimas Mandiri Publikasi Riset Orientasi Teknik Sipil (Proteksi) Jurnal Talenta Sipil Jurnal Teknik Sipil Institut Teknologi Padang Journal of Civil Engineering and Vocational Education Jurnal Teknik Sipil
Minaka, Utari Sriwijaya
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences Transportation

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Bantuan Desain dan Pembangunan Gapura Desa Air Merah Kabupaten Rejang Lebong Amalia, Ghina; Minaka, Utari Sriwijaya; Khairunnisa, Yessi
Jurnal Abdimas Mandiri Vol. 8 No. 3
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jam.v8i3.4695

Abstract

Gapura bukan hanya sekedar bangunan simbolis tanpa makna dan fungsi. Lebih dari itu Gapura berfungsi sebagai identitas dari suatu wilayah. Identitas suatu wilayah mencerminkan karakteristik masyarakat yang menempatinya. Identitas daerah menjadi penting sebab sangat berperan dalam proses perencanaan dan perancangan kota. Suatu daerah yang memiliki ciri khas tertentu seperti keunggulan komoditinya ataupun wisata juga dilambangkan dari Gapura. Gapura terletak pada jalan masuk utama suatu wilayah. Hal ini membuat wilayah tersebut menjadi mudah dikenali oleh orang luar karena gapura yang akan pertama kali dilihat ketika sesorang memasuki wilayah tersebut. Berdasarkan survey lapangan yang telah dilakukan oleh tim pengabdian kepada masyarakat, ditemukan satu desa di Kecamatan Curup Tengah Kabupaten Rejang Lebong yaitu Desa Air Merah belum memiliki gapura. Ketiadaan gapura pada desa ini menjadikan desa ini sulit untuk dikenal. Padahal desa air merah memiliki beberapa komoditi unggulan seperti produksi gula aren dan kolang- kaling. Berangkat dari permasalahan tersebut maka dilakukan kegiatan PkM bagi masyarakat desa air merah ini dengan tujuan memberikan bantuan perencaan desain gapura desa berupa Design Engineering Detail (DED) serta rencana anggaran biaya (RAB). Tahapan yang dilakukan dalam kegiatan ini terbagi menjadi lima tahapan yaitu survey lokasi, diskusi dengan warga, pembuatan desain dan penyusunan RAB, proses pembangunan Gapura, dan serta pelaporan hasil kegiatan. Kegiatan ini selain menghasilkan dokumen perencanaan berupa DED dan RAB, juga menghasilkan bangunan fisik Gapura.
Pengujian Sifat Mekanis Tanah Sempadan Sungai dengan Pendekatan Uji Triaxial Fauzi, Marguan; Minaka, Utari Sriwijaya; Nurmawan, Tiara Salsabiela
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.863

Abstract

In construction planning, the condition of the soil must be given special attention in building a bridge which will later become the foundation, where during the rainy season it is often inundated with water/floods which can cause a wet-dry phase in the soil along the river. The aim of this research is to identify soil characteristics in the form of physical and mechanical properties of the soil on the border of Lubuk Mumpo village and determine the effect of changes in soil water content values with variations in the optimum water content mixture (Wopt), Wopt -10% Wopt, Wopt -20% Wopt and Wopt +10% Wopt, Wopt +20% Wopt to the triaxial value. The research method used is experimental in the laboratory. The research results showed that the soil conditions in Lubuk Mumpo village based on tests carried out were characterized by inorganic clay with medium-high plasticity and a uniformity coefficient (Cu) value of 16 which was well graded with a value of 16>15 and a Cc value of 0.25 and variation. The optimum water content obtained by Wopt is 29% and Wopt variations can also be determined, namely Wopt - 10% Wopt, Wopt -20% Wopt, Wopt +10% Wopt and Wopt +20% Wopt. The highest shear strength occurred when reducing Wopt -10% Wopt, namely Ø 9,980◦, an increase from Woptimum and for adding Wopt +10% Wopt, the shear strength decreased to minus, namely Ø – 5,294◦.
Karakteristik Parameter Kuat Geser Tanah pada Lereng Akibat Perubahan Kadar Air Tanah Amalia, Ghina; Minaka, Utari Sriwijaya; Aprilianda, Aprilianda
Jurnal Teknik Sipil Vol 21 No 1 (2025): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v21i1.7509

Abstract

The slope failure that occurred on the slope is indicated to be caused by an increase in soil mass due to the increase in water content filling the soil pores, which affects the soil properties, especially shear strength as one of the mechanical properties of soil. This study aims to analyze the effect of changes in soil water content on the shear strength of the slope. The study used disturbed soil samples taken at the edge of the slope on the Manna-Pagaralam Road section and were dried. Compaction testing was conducted to obtain the optimum water content (OWC) value, which represents the middle value of the variation in soil water content in the test samples. The variation of the test samples includes OWC-20%OWC, OWC-10%OWC, OWC, OWC+10%OWC, and OWC+20%OWC. The shear strength of the soil was obtained through Direct Shear testing. According to the USCS standard, the soil is classified as sandy clay soil. The Direct Shear testing results showed the highest cohesion (c) value in the OWC variation or at the Optimum Water Content variation, which is 2.796 kPa. This is because the cohesion value occurs in the fine particles, namely clay, which is influenced by the intergranular water content. Meanwhile, the highest internal friction angle value was obtained in the OWC-10%OWC variation, which is 32.15o. This is because the internal friction angle value occurs in the coarse particles, namely sand particles, where friction decreases as the water content filling the soil pores increases.
Analysis Of The Effect Of The Use Of Coral Reefs As A Substitute For Fine Aggregates On The Compressive Strength Of Concrete: ANALISIS PENGARUH PENGGUNAAN TERUMBU KARANG SEBAGAI SUBTITUSI AGREGAT HALUS TERHADAP KUAT TEKAN BETON Ramadhan, Muhammad Fathur; Minaka, Utari Sriwijaya; Febriyandi
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 1 (2025): Vol 7 No 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v7n1.p47-52

Abstract

Eco-friendly materials are in the spotlight of the world because they have a very influential impact on the development and advancement of technology today. Construction made of eco-friendly materials doesn’t damage nature, is lighter and use recycled materials. Coral reefs are a type of waste that can used to increase the compressive strength of concrete. This study analyzes the effect of using coral reef waste fragments as fine aggregate substitution of 70%, 75%, and 80%. The comparison was made against normal concrete without coral reef waste fragments. Compressive strength results were obtained in normal concrete of 25.93 MPa at the age of 28 days, while in concrete variations of coral reef waste fragments as fine aggregate substitution at the age of 28 days with variation of 70% of 28.18 MPa, variation of 75% of 26.48 MPa, and variation of 80% of 26.65 MPa. These results show that the use of coral reef waste fragments as fine aggregate substitution of 70% is the optimal result, and the use of coral reef waste fragments more than that can reduce the compressive strength of concrete, due to the excessive chemical compounds contained in coral reef waste, it can reduce the resistance to concrete.
STUDI EKSPERIMENTAL PENGARUH PERUBAHAN NILAI KADAR AIR TANAH TERHADAP NILAI CBR (CALIFORNIA BEARING RATIO) Pratama, Ricky Yuda; Minaka, Utari Sriwijaya; Devi, Debby Sinta
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 13 No 2 (2025): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v13i2.3649

Abstract

Soil water content significantly influences the bearing capacity of a soil. Bearing capacity is the ability of the soil to support construction loads. In a construction project, the subgrade must be able to support the planned loads and meet the requirements for successful construction. This experimental study aimed to determine the soil type, specific gravity, plasticity index, and the effect of changes in soil water content on the CBR values ​​of soaked and unsoaked soil from Lubuk Mumpo Village, Gunung Megang District, Muara Enim Regency. This study involved mixing native soil with mixture percentages of -10% OMC, -20% OMC, and +10% OMC, +20% OMC, to determine the CBR value. Ten soil samples were prepared for this test: 5 unsoaked and 5 soaked samples, based on SNI 1744-2012. The highest CBR values ​​were obtained at 10.94% for the -20% soaking variation (soaked) for 4 days and 5.33% for the -20% unsoaked variation (unsoaked) compared to the original soil. These results indicate that a 20% decrease in water content below the OMC increases the CBR value, while an increase in water content above the OMC decreases the CBR value.
Slope Stability Analysis of Sekayu-Mangun Jaya Road STA 127+350 Reinforced with Retaining Walls Minaka, Utari Sriwijaya; Uanza, Roby; Nisumanti, Sartika; Amalia, Ghina
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.462

Abstract

Economic growth that increases the traffic load on national roads requires these roads to have decent, safe and comfortable services. Landslide was occurred on the Sekayu-Mangun Jaya STA 127+350 road section which disrupted traffic activity. This occurrence caused the major road to shift sideways and deteriorate, rendering the route's service capacity insufficient. The road section has been repaired and is planned to use soil retaining wall reinforcement as a countermeasure. This study aims to determine the slope stability of the Sekayu-Mangun Jaya road before and after reinforcement is carried out. Slope stability analysis was performed by empirical methods using infinite slope theory and the finite element method using the Plaxis program. The calculation results show that the safety factor of the slope before the retaining wall is installed at BH-01 is 0.9. This value falls under the category of unstable slope. The safety factor at the BH-02 location was obtained at 1.3 in the moderate stability category. Slope stability after strengthening with the installation of embankments and retaining walls shows an increase in the safety factor at BH-01 to 2.59. After the slope reinforcement was carried out, the slope deformation decreased significantly to 1.5 m. The results implicated that with slope reinforcement, slope stability increases and the possibility of landslides decreases.
Analisis Eksperimental Nilai Kuat Tekan Bebas Tanah Gambut Akibat Substitusi Geopolimer Amalia, Ghina; Minaka, Utari Sriwijaya
Jurnal Teknik Sipil Institut Teknologi Padang Vol 11 No 2 (2024): Jurnal Teknik Sipil institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jts.2024.V1102.088-94

Abstract

Peningkatan pembangunan infrastruktur di Indonesia berdampak pada peningkatan penggunaan lahan. Hanya saja tidak semua lahan memiliki karakteristik geoteknik yang memenuhi persyaratan untuk dibangun suatu infrastruktur di atasnya. Lahan yang tidak memenuhi persyaratan tersebut disebut tanah bermasalah. Salah satu jenis tanah bermasalah yang paling sering ditemui di Indonesia khususnya pulau Sumatera adalah tanah gambut. Tanah gambut memiliki kandungan air yang tinggi dan berbanding lurus dengan nilai indeks permeabilitasnya. Tanah dengan indeks permeabilitas yang tinggi akan mudah mengalami penurunan yang sangat signifikan sehingga nilai daya dukung tanah ini sangat rendah. Agar tanah gambut tetap dapat digunakan, maka perlu dilakukan stabilisasi salah satu metodenya dengan menggunakan zat kimia. Pada penelitian ini digunakan campuran geopolimer sebagai bahan stabilisasi tanah gambut. Variasi campuran geopolimer yang digunakan adalah 0%, 10%, 15%, 20% dan 25%. Pengujian dilakukan secara eksperimental di laboratorium dengan menggunakan pengujian UCT (Unconfined Compression Test). Pengujian ini mendapatkan nilai qu (kuat tekan bebas) dan nilai kohesi tanah gambut yang telah distabilisasi. Berdasarkan hasil pengujian didapatkan bahwa peningkatan persentase jumlah campuran geopolimer pada tanah gambut akan berbanding lurus dengan meningkatnya nilai qu tanah gambut. Nilai qu tertinggi didapatkan sebesar 0,910 kg/cm2.
Co-Authors Amalia, Ghina Aprilianda, Aprilianda Devi, Debby Sinta Fauzi, Marguan Febriyandi Khairunnisa, Yessi Nisumanti, Sartika Nurmawan, Tiara Salsabiela Pratama, Ricky Yuda Ramadhan, Muhammad Fathur Uanza, Roby